Node Documentation

Introduction

This section provides an overview of how an instrument’s configuration and output is organized by the Data Server.

All communication with an instrument occurs via the Data Server program the instrument is connected to (see LabOne Software Architecture for an overview of LabOne’s software components). Although the instrument’s settings are stored locally on the device, it is the Data Server’s task to ensure it maintains the values of the current settings and makes these settings (and any subscribed data) available to all its current clients. A client may be the LabOne User Interface or a user’s own program implemented using one of the LabOne Application Programming Interfaces, e.g., Python.

The instrument’s settings and data are organized by the Data Server in a file-system-like hierarchical structure called the node tree. When an instrument is connected to a Data Server, it’s device ID becomes a top-level branch in the Data Server’s node tree. The features of the instrument are organized as branches underneath the top-level device branch and the individual instrument settings are leaves of these branches.

For example, the auxiliary outputs of the instrument with device ID "dev2006" are located in the tree in the branch:

/DEV2006/AUXOUTS/

In turn, each individual auxiliary output channel has it’s own branch underneath the "AUXOUTS" branch.

/DEV2006/AUXOUTS/0/
/DEV2006/AUXOUTS/1/
/DEV2006/AUXOUTS/2/
/DEV2006/AUXOUTS/3/

Whilst the auxiliary outputs and other channels are labelled on the instrument’s panels and the User Interface using 1-based indexing, the Data Server’s node tree uses 0-based indexing. Individual settings (and data) of an auxiliary output are available as leaves underneath the corresponding channel’s branch:

/DEV2006/AUXOUTS/0/DEMODSELECT
/DEV2006/AUXOUTS/0/LIMITLOWER
/DEV2006/AUXOUTS/0/LIMITUPPER
/DEV2006/AUXOUTS/0/OFFSET
/DEV2006/AUXOUTS/0/OUTPUTSELECT
/DEV2006/AUXOUTS/0/PREOFFSET
/DEV2006/AUXOUTS/0/SCALE
/DEV2006/AUXOUTS/0/VALUE

These are all individual node paths in the node tree; the lowest-level nodes which represent a single instrument setting or data stream. Whether the node is an instrument setting or data-stream and which type of data it contains or provides is well-defined and documented on a per-node basis in the Reference Node Documentation section in the relevant instrument-specific user manual. The different properties and types are explained in Node Properties and Data Types .

For instrument settings, a Data Server client modifies the node’s value by specifying the appropriate path and a value to the Data Server as a (path, value) pair. When an instrument’s setting is changed in the LabOne User Interface, the path and the value of the node that was changed are displayed in the Status Bar in the bottom of the Window. This is described in more detail in Node Properties and Data Types.

Module Parameters

LabOne Core Modules, such as the Sweeper, also use a similar tree-like structure to organize their parameters. Please note, however, that module nodes are not visible in the Data Server’s node tree; they are local to the instance of the module created in a LabOne client and are not synchronized between clients.

Node Properties and Data Types

A node may have one or more of the following properties:

Read

Data can be read from the node.

Write

Data can be written to the node.

Setting

A node with write attribute corresponding to an instrument configuration. The data in these nodes will be saved to and loaded from LabOne XML settings files.

Streaming

A node with the read attribute that provides instrument data, typically at a user-configured rate. The data is usually a more complex data type, for example demodulator data is returned as ZIDemodSample. A full list of streaming nodes is available in the Programming Manual in the Chapter Instrument Communication Their availability depends on the device class (e.g. MF) and the option set installed on the device.

A node may contain data of the following types:

Integer

Integer data.

Double

Double precision floating point data.

String

A string array.

Enumerated (integer)

As for Integer, but the node only allows certain values.

Composite data type

For example, ZIDemodSample. These custom data types are structures whose fields contain the instrument output, a timestamp and other relevant instrument settings such as the demodulator oscillator frequency. Documentation of custom data types is available in

Exploring the Node Tree

In the LabOne User Interface

A convenient method to learn which node is responsible for a specific instrument setting is to check the Command Log history in the bottom of the LabOne User Interface. The command in the Status Bar gets updated every time a configuration change is made. For example, the status bar shows how the equivalent Matlab command is displayed after modifying the value of the auxiliary output 1’s offset. The format of the LabOne UI’s command history can be configured in the Config Tab (Matlab, Python and .NET are available). The entire history generated in the current UI session can be viewed by clicking the "Show Log" button.

NodeTreeDescription LabOneUILogStatusBar
Figure 1. When a device’s configuration is modified in the LabOne User Interface, the Status Bar displays the equivalent command to perform the same configuration via a LabOne programming interface. Here, the Matlab code to modify auxiliary output 1’s offset value is provided. When "Show Log" is clicked the entire configuration history is displayed in a new browser tab.

In the Instrument-specific User Manual

Each instrument user manual has a Device Node Tree chapter that contains complete reference documentation of every node available on the device. This documentation may be explored by branch to obtain a complete overview of which settings are available on the instrument.

In a LabOne Programming Interface

A list of nodes (under a specific branch) can be requested from the Data Server in an API client using the listNodes command (Matlab, Python,.NET) or ziAPIListNodes() function (C API). Please see each API’s command reference for more help using the listNodes command. To obtain a list of all the nodes that provide data from an instrument at a high rate, so-called streaming nodes, the streamingonly flag can be provided to listNodes.

The detailed descriptions of nodes that is provided below is accessible directly in the LabOne Matlab or Python programming interfaces using the "help" command. The help command is daq.help(path) in Python and ziDAQ('help', path) in Matlab. The command returns a description of the instrument node including access properties, data type, units and available options. The "help" command also handles wildcards to return a detailed description of all nodes matching the path. An example is provided below.

daq = zhinst.ziPython.ziDAQServer('localhost', 8004, 6)
daq.help('/dev2006/auxouts/0/offset')
# Out:
# /DEV2006/AUXOUTS/0/OFFSET#
# Add the specified offset voltage to the signal after scaling. Auxiliary Output
# Value = (Signal+Preoffset)*Scale + Offset
# Properties: Read, Write, Setting
# Type: Double
# Unit: V

Data Server Nodes

The Data Server has nodes in the node tree available under the top-level /ZI/ branch. These nodes give information about the version and state of the Data Server the client is connected to. For example, the nodes:

  • /ZI/ABOUT/VERSION

  • /ZI/ABOUT/REVISION

are read-only nodes that contain information about the release version and revision of the Data Server. The nodes under the /ZI/DEVICES/ list which devices are connected, discoverable and visible to the Data Server.

The nodes:

  • /ZI/CONFIG/OPEN

  • /ZI/CONFIG/PORT

are settings nodes that can be used to configure which port the Data Server listens to for incoming client connections and whether it may accept connections from clients on hosts other than the localhost. for more information about specifying the Data Server host and port.

Nodes that are of particular use to programmers are:

  • /ZI/DEBUG/LOGPATH - the location of the Data Server’s log in the PC’s file system,

  • /ZI/DEBUG/LEVEL - the current log-level of the Data Server (configurable; has the Write attribute),

  • /ZI/DEBUG/LOG - the last Data Server log entries as a string array.

For documentation of all Data Server nodes see the /ZI/ section in the Reference Node Documentation section in the instrument-specific user manual.

Reference Node Documentation

This section describes all the nodes in the data server’s node tree organized by branch.

CLOCKBASE

/DEV…​./CLOCKBASE

Properties:

Read

Type:

Double

Unit:

Hz

Returns the internal clock frequency of the device.

DIOS (Digital I/O)

/DEV…​./DIOS/n/DRIVE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

When on (1), the corresponding 8-bit bus is in output mode. When off (0), it is in input mode. Bit 0 corresponds to the least significant byte. For example, the value 1 drives the least significant byte, the value 8 drives the most significant byte.

/DEV…​./DIOS/n/INPUT

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Gives the value of the DIO input for those bytes where drive is disabled.

/DEV…​./DIOS/n/INTERFACE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Selects the interface standard to use on the 32-bit DIO interface. A value of 0 means that a 3.3 V CMOS interface is used. A value of 1 means that an LVDS compatible interface is used.

/DEV…​./DIOS/n/MODE

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Select DIO mode

0

manual

Enables manual control of the DIO output bits.

1

seqcon, sequencer_control

Enables control of DIO values by the Sequencer.

2

qa_result

Sends discriminated Readout Results to the DIO.

/DEV…​./DIOS/n/OUTPUT

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Sets the value of the DIO output for those bytes where 'drive' is enabled.

FEATURES

/DEV…​./FEATURES/CODE

Properties:

Read, Write

Type:

String

Unit:

None

Node providing a mechanism to write feature codes.

/DEV…​./FEATURES/DEVTYPE

Properties:

Read

Type:

String

Unit:

None

Returns the device type.

/DEV…​./FEATURES/OPTIONS

Properties:

Read

Type:

String

Unit:

None

Returns enabled options.

/DEV…​./FEATURES/SERIAL

Properties:

Read

Type:

String

Unit:

None

Device serial number.

QACHANNELS

/DEV…​./QACHANNELS/n/CENTERFREQ

Properties:

Read, Write, Setting

Type:

Double

Unit:

Hz

The Center Frequency of the analysis band.

/DEV…​./QACHANNELS/n/MODE

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Selects between Spectroscopy and Qubit Readout mode.

0

spectroscopy

In Spectroscopy mode, the Signal Output is connected to the Oscillator, with which also the measured signals are correlated.

1

readout

In Qubit Readout mode, the Signal Output is connected to the Readout Pulse Generator, and the measured signals are correlated with the Integration Weights before state discrimination.

/DEV…​./QACHANNELS/n/GENERATOR/DELAY

Properties:

Read, Write, Setting

Type:

Double

Unit:

s

Sets a common delay for the start of the playback for all Waveform Memories. The resolution is 2 ns.

/DEV…​./QACHANNELS/n/INPUT/ON

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enables the Signal Input.

/DEV…​./QACHANNELS/n/INPUT/OVERRANGECOUNT

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Indicates the number of times the Signal Input was in an overrange condition within the last 200 ms. It is checked for an overrange condition every 10 ms.

/DEV…​./QACHANNELS/n/INPUT/RANGE

Properties:

Read, Write, Setting

Type:

Double

Unit:

dBm

Sets the maximal Range of the Signal Input power. The instrument selects the closest available Range with a resolution of 5 dBm.

/DEV…​./QACHANNELS/n/OUTPUT/FILTER

Properties:

Read

Type:

Integer (enumerated)

Unit:

None

Reads the selected analog filter before the Signal Output.

0

lowpass_1500

Low-pass filter of 1.5 GHz.

1

lowpass_3000

Low-pass filter of 3 GHz.

2

bandpass_3000_6000

Band-pass filter between 3 GHz - 6 GHz

3

bandpass_6000_10000

Band-pass filter between 6 GHz - 10 GHz

/DEV…​./QACHANNELS/n/OUTPUT/ON

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enables the Signal Output.

/DEV…​./QACHANNELS/n/OUTPUT/OVERRANGECOUNT

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Indicates the number of times the Signal Output was in an overrange condition within the last 200 ms. It is checked for an overrange condition every 10 ms.

/DEV…​./QACHANNELS/n/OUTPUT/RANGE

Properties:

Read, Write, Setting

Type:

Double

Unit:

dBm

Sets the maximal Range of the Signal Output power. The instrument selects the closest available Range with a resolution of 5 dBm.

/DEV…​./QACHANNELS/n/SPECTROSCOPY/DELAY

Properties:

Read, Write, Setting

Type:

Double

Unit:

s

Sets the delay of the integration in Spectroscopy mode with respect to the Trigger signal. The resolution is 2 ns.

/DEV…​./QACHANNELS/n/SPECTROSCOPY/LENGTH

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Sets the integration length in Spectroscopy mode in number of samples. Up to 33.5 MSa (2^25 samples) can be recorded, which corresponds to 16.7 ms.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/AUXTRIGGERS/n/CHANNEL

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Selects the source of the digital Trigger.

0

chan0trigin0, channel0_trigger_input0

Channel 1, Trigger Input A.

1

chan0trigin1, channel0_trigger_input1

Channel 1, Trigger Input B.

2

chan1trigin0, channel1_trigger_input0

Channel 2, Trigger Input A.

3

chan1trigin1, channel1_trigger_input1

Channel 2, Trigger Input B.

32

chan0seqtrig0, channel0_sequencer_trigger0

Channel 1, Sequencer Trigger Output.

33

chan1seqtrig0, channel1_sequencer_trigger0

Channel 2, Sequencer Trigger Output.

128

chan0rod, channel0_readout_done

Channel 1, Readout done.

129

chan1rod, channel1_readout_done

Channel 2, Readout done.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/DATA

Properties:

Read

Type:

ZIVectorData

Unit:

None

A vector of 32-bit integers representing the values on the DIO interface.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/ERROR/TIMING

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

A 32-bit value indicating which bits on the DIO interface may have timing errors. A timing error is defined as an event where either the VALID or any of the data bits on the DIO interface change value at the same time as the STROBE bit.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/ERROR/WIDTH

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Indicates a width (i.e. jitter) error on either the STROBE (bit 0 of the value) or VALID bit (bit 1 of the result). A width error indicates that there was jitter detected on the given bit, meaning that an active period was either shorter or longer than the configured expected width.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/HIGHBITS

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

32-bit value indicating which bits on the 32-bit interface are detected as having a logic high value.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/LOWBITS

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

32-bit value indicating which bits on the 32-bit interface are detected as having a logic low value.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/STATE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

When asserted, indicates that triggers are generated from the DIO interface to the Sequencer.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/STROBE/INDEX

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Select the DIO bit to use as the STROBE signal.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/STROBE/SLOPE

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Select the signal edge of the STROBE signal for use in timing alignment.

0

off

Off

1

rising_edge

Rising edge Trigger

2

falling_edge

Falling edge Trigger

3

both_edges

Rising or falling edge Trigger

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/STROBE/WIDTH

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Specifies the expected width of active pulses on the STROBE bit.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/VALID/INDEX

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Select the DIO bit to use as the VALID signal to indicate that a valid input is available.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/VALID/POLARITY

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Polarity of the VALID bit that indicates that a valid input is available.

0

none

None: VALID bit is ignored.

1

low

Low: VALID bit must be logical zero.

2

high

High: VALID bit must be logical high.

3

both

Both: VALID bit may be logical high or zero.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/DIO/VALID/WIDTH

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Expected width of an active pulse on the VALID bit.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/ELF/DATA

Properties:

Read, Write

Type:

ZIVectorData

Unit:

None

Content of the uploaded ELF file.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/ELF/LENGTH

Properties:

Read, Write

Type:

Integer (64 bit)

Unit:

None

Length of the compiled ELF file.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/ELF/NAME

Properties:

Read

Type:

ZIVectorData

Unit:

None

Name of the uploaded ELF file.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/ELF/PROGRESS

Properties:

Read

Type:

Double

Unit:

%

Percentage of the Sequencer program already uploaded to the device.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/ENABLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enables the Sequencer.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/MEMORYUSAGE

Properties:

Read

Type:

Double

Unit:

None

Size of the current Sequencer program relative to the available instruction memory of 16384 instructions.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/PROGRAM

Properties:

Read

Type:

ZIVectorData

Unit:

None

Displays the source code of the current Sequencer program.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/READY

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The Sequencer has a compiled program and is ready to be enabled.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/SINGLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Puts the Sequencer into single-shot mode.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/STATUS

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Status of the Sequencer on the instrument. Bit 0: Sequencer is running; Bit 1: reserved; Bit 2: Sequencer is waiting for a trigger to arrive; Bit 3: Sequencer has detected an error.

/DEV…​./QACHANNELS/n/GENERATOR/SEQUENCER/TRIGGERED

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

When at value 1, indicates that the Sequencer has been triggered.

/DEV…​./QACHANNELS/n/GENERATOR/WAVEFORMS/n/LENGTH

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Length of the uploaded waveform in number of complex samples.

/DEV…​./QACHANNELS/n/GENERATOR/WAVEFORMS/n/WAVE

Properties:

Read, Write

Type:

ZIVectorData

Unit:

None

Contains the generators waveforms as a vector of complex samples

/DEV…​./QACHANNELS/n/MARKERS/n/SOURCE

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Selects the source for the marker output.

32

chan0seqtrig0, channel0_sequencer_trigger0

Channel 1, Sequencer Trigger Output.

33

chan1seqtrig0, channel1_sequencer_trigger0

Channel 2, Sequencer Trigger Output.

96

chan0seqmrk0, channel0_sequencer_marker0

Channel 1, Sequencer Marker 1 Output.

97

chan1seqmrk0, channel1_sequencer_marker0

Channel 2, Sequencer Marker 1 Output.

100

chan0seqmrk1, channel0_sequencer_marker1

Channel 1, Sequencer Marker 1 Output.

101

chan1seqmrk1, channel1_sequencer_marker1

Channel 2, Sequencer Marker 1 Output.

128

chan0rod, channel0_readout_done

Channel 1, Readout done.

129

chan1rod, channel1_readout_done

Channel 2, Readout done.

/DEV…​./QACHANNELS/n/OSCS/n/FREQ

Properties:

Read, Write, Setting

Type:

Double

Unit:

Hz

Controls the frequency of each digital Oscillator.

/DEV…​./QACHANNELS/n/OSCS/n/GAIN

Properties:

Read, Write, Setting

Type:

Double

Unit:

None

Controls the gain of each digital Oscillator. The gain is defined relative to the Output Range of the Readout Channel.

/DEV…​./QACHANNELS/n/READOUT/DISCRIMINATORS/n/THRESHOLD

Properties:

Read, Write, Setting

Type:

Double

Unit:

None

Sets the threshold level for the 2-state discriminator on the real signal axis in Vs.

/DEV…​./QACHANNELS/n/READOUT/INTEGRATION/DELAY

Properties:

Read, Write, Setting

Type:

Double

Unit:

s

Sets a common delay for the start of the readout integration for all Integration Weights with respect to the common delay of the Readout Pulse Generator. The resolution is 2 ns.

/DEV…​./QACHANNELS/n/READOUT/INTEGRATION/LENGTH

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Sets the length of all Integration Weights in number of samples. A maximum of 4096 samples can be integrated, which corresponds to 2.05 us.

/DEV…​./QACHANNELS/n/READOUT/INTEGRATION/WEIGHTS/n/WAVE

Properties:

Read, Write

Type:

ZIVectorData

Unit:

None

Contains the complex-valued waveform of the Integration Weight. The valid range is between -1.0 and +1.0 for both the real and imaginary part.

/DEV…​./QACHANNELS/n/READOUT/RESULT/ACQUIRED

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Indicates the index of the acquisition that will be performed on the next trigger.

/DEV…​./QACHANNELS/n/READOUT/RESULT/AVERAGES

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Exponent to base 2 of the number of averages to perform. 0 means no averaging, 1 means 2 values are averaged, etc. The maximum setting is 15 for averaging 2^15 values.

/DEV…​./QACHANNELS/n/READOUT/RESULT/DATA/n/WAVE

Properties:

Read

Type:

ZIVectorData

Unit:

None

Acquired result data. Depending on the source of the data, the data can be complex- or integer-valued.

/DEV…​./QACHANNELS/n/READOUT/RESULT/ENABLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enables the acquisition of readout results.

/DEV…​./QACHANNELS/n/READOUT/RESULT/ERRORS

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of hold-off errors detected since last reset.

/DEV…​./QACHANNELS/n/READOUT/RESULT/LENGTH

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Number of data points to record. One data point corresponds to a single averaged result value of the selected source.

/DEV…​./QACHANNELS/n/READOUT/RESULT/RESET

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Resets the Result Logger and prepares it for a new measurement.

/DEV…​./QACHANNELS/n/READOUT/RESULT/SOURCE

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Selects the signal source of the Result Logger.

0

result_of_spectroscopy_unit

Integration results in Spectroscopy mode.

1

result_of_integration

Complex-valued integration results of the Weighted Integration in Qubit Readout mode.

3

result_of_discrimination

The results after state discrimination.

/DEV…​./QACHANNELS/n/TRIGGERS/n/IMP50

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Trigger Input impedance: When on, the Trigger Input impedance is 50 Ohm; when off, 1 kOhm.

0

1_kOhm

OFF: 1 k Ohm

1

50_Ohm

ON: 50 Ohm

/DEV…​./QACHANNELS/n/TRIGGERS/n/LEVEL

Properties:

Read, Write, Setting

Type:

Double

Unit:

V

Defines the analog Trigger level.

/DEV…​./QACHANNELS/n/TRIGGERS/n/VALUE

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Shows the value of the digital Trigger Input. The value is integrated over a period of 100 ms. Values are: 1: low; 2: high; 3: was low and high in the period.

SCOPES

/DEV…​./SCOPES/n/ENABLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enables the acquisition of Scope shots. Goes back to 0 (disabled) after the scope shot has been acquired.

/DEV…​./SCOPES/n/LENGTH

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Defines the length of the recorded Scope shot in number of samples.

/DEV…​./SCOPES/n/TIME

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Defines the time base of the Scope.

0

2 GHz

/DEV…​./SCOPES/n/AVERAGING/COUNT

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Configures the number of Scope measurements to average.

/DEV…​./SCOPES/n/AVERAGING/ENABLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enables averaging of Scope measurements.

/DEV…​./SCOPES/n/SEGMENTS/COUNT

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Specifies the number of segments to be recorded in device memory. The maximum Scope shot size is given by the available memory divided by the number of segments.

/DEV…​./SCOPES/n/SEGMENTS/ENABLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enable segmented Scope recording. This allows for full bandwidth recording of Scope shots with a minimum dead time between individual shots.

/DEV…​./SCOPES/n/TRIGGER/CHANNEL

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Selects the trigger source signal.

0

chan0trigin0, channel0_trigger_input0

Channel 1, Trigger Input A.

1

chan0trigin1, channel0_trigger_input1

Channel 1, Trigger Input B.

2

chan1trigin0, channel1_trigger_input0

Channel 2, Trigger Input A.

3

chan1trigin1, channel1_trigger_input1

Channel 2, Trigger Input B.

32

chan0seqtrig0, channel0_sequencer_trigger0

Channel 1, Sequencer Trigger Output.

33

chan1seqtrig0, channel1_sequencer_trigger0

Channel 2, Sequencer Trigger Output.

64

chan0seqmon0, channel0_sequencer_monitor0

Channel 1, Sequencer Monitor Trigger.

65

chan1seqmon0, channel1_sequencer_monitor0

Channel 2, Sequencer Monitor Trigger.

/DEV…​./SCOPES/n/TRIGGER/DELAY

Properties:

Read, Write, Setting

Type:

Double

Unit:

s

The delay of a Scope measurement. A negative delay results in data being acquired before the trigger point. The resolution is 2 ns.

/DEV…​./SCOPES/n/CHANNELS/n/ENABLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

Dependent

Enables recording for this Scope channel.

/DEV…​./SCOPES/n/CHANNELS/n/INPUTSELECT

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Selects the scope input signal.

0

chan0sigin, channel0_signal_input

Signal Input Channel 1.

1

chan1sigin, channel1_signal_input

Signal Input Channel 2.

16

chan0auxin, channel0_auxiliary_input

Auxiliary Input Channel 1.

17

chan1auxin, channel1_auxiliary_input

Auxiliary Input Channel 2.

/DEV…​./SCOPES/n/CHANNELS/n/WAVE

Properties:

Read

Type:

ZIVectorData

Unit:

Dependent

Contains the acquired Scope measurement data.

STATS

/DEV…​./STATS/CMDSTREAM/BANDWIDTH

Properties:

Read

Type:

Double

Unit:

Mbit/s

Command streaming bandwidth usage on the physical network connection between device and data server.

/DEV…​./STATS/CMDSTREAM/BYTESRECEIVED

Properties:

Read

Type:

Integer (64 bit)

Unit:

B

Number of bytes received on the command stream from the device since session start.

/DEV…​./STATS/CMDSTREAM/BYTESSENT

Properties:

Read

Type:

Integer (64 bit)

Unit:

B

Number of bytes sent on the command stream from the device since session start.

/DEV…​./STATS/CMDSTREAM/PACKETSLOST

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of command packets lost since device start. Command packets contain device settings that are sent to and received from the device.

/DEV…​./STATS/CMDSTREAM/PACKETSRECEIVED

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of packets received on the command stream from the device since session start.

/DEV…​./STATS/CMDSTREAM/PACKETSSENT

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of packets sent on the command stream to the device since session start.

/DEV…​./STATS/CMDSTREAM/PENDING

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of buffers ready for receiving command packets from the device.

/DEV…​./STATS/CMDSTREAM/PROCESSING

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of buffers being processed for command packets. Small values indicate proper performance. For a TCP/IP interface, command packets are sent using the TCP protocol.

/DEV…​./STATS/DATASTREAM/BANDWIDTH

Properties:

Read

Type:

Double

Unit:

Mbit/s

Data streaming bandwidth usage on the physical network connection between device and data server.

/DEV…​./STATS/DATASTREAM/BYTESRECEIVED

Properties:

Read

Type:

Integer (64 bit)

Unit:

B

Number of bytes received on the data stream from the device since session start.

/DEV…​./STATS/DATASTREAM/PACKETSLOST

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of data packets lost since device start. Data packets contain measurement data.

/DEV…​./STATS/DATASTREAM/PACKETSRECEIVED

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of packets received on the data stream from the device since session start.

/DEV…​./STATS/DATASTREAM/PENDING

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of buffers ready for receiving data packets from the device.

/DEV…​./STATS/DATASTREAM/PROCESSING

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Number of buffers being processed for data packets. Small values indicate proper performance. For a TCP/IP interface, data packets are sent using the UDP protocol.

/DEV…​./STATS/PHYSICAL/OVERTEMPERATURE

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

This flag is set to a value greater than 0 when the internal temperatures are reaching critical limits.

/DEV…​./STATS/PHYSICAL/CURRENTS/n

Properties:

Read

Type:

Double

Unit:

mA

Provides internal current readings for monitoring.

/DEV…​./STATS/PHYSICAL/FANSPEEDS/n

Properties:

Read

Type:

Integer (64 bit)

Unit:

RPM

Speed of the internal cooling fans for monitoring.

/DEV…​./STATS/PHYSICAL/FPGA/AUX

Properties:

Read

Type:

Double

Unit:

V

Supply voltage of the FPGA.

/DEV…​./STATS/PHYSICAL/FPGA/CORE

Properties:

Read

Type:

Double

Unit:

V

Core voltage of the FPGA.

/DEV…​./STATS/PHYSICAL/FPGA/PSTEMP

Properties:

Read

Type:

Double

Unit:

°C

Internal temperature of the FPGA’s processor system.

/DEV…​./STATS/PHYSICAL/FPGA/TEMP

Properties:

Read

Type:

Double

Unit:

°C

Internal temperature of the FPGA.

/DEV…​./STATS/PHYSICAL/TEMPERATURES/n

Properties:

Read

Type:

Double

Unit:

°C

Provides internal temperature readings for monitoring.

/DEV…​./STATS/PHYSICAL/VOLTAGES/n

Properties:

Read

Type:

Double

Unit:

V

Provides internal voltage readings for monitoring.

/DEV…​./STATS/PHYSICAL/SIGINS/n/CURRENTS/n

Properties:

Read

Type:

Double

Unit:

A

Provides internal current readings on the Signal Input board for monitoring.

/DEV…​./STATS/PHYSICAL/SIGINS/n/TEMPERATURES/n

Properties:

Read

Type:

Double

Unit:

°C

Provides internal temperature readings on the Signal Input board for monitoring.

/DEV…​./STATS/PHYSICAL/SIGINS/n/VOLTAGES/n

Properties:

Read

Type:

Double

Unit:

V

Provides internal voltage measurement on the Signal Input board for monitoring.

/DEV…​./STATS/PHYSICAL/SIGOUTS/n/CURRENTS/n

Properties:

Read

Type:

Double

Unit:

A

Provides internal current readings on the Signal Output board for monitoring.

/DEV…​./STATS/PHYSICAL/SIGOUTS/n/TEMPERATURES/n

Properties:

Read

Type:

Double

Unit:

°C

Provides internal temperature readings on the Signal Output board for monitoring.

/DEV…​./STATS/PHYSICAL/SIGOUTS/n/VOLTAGES/n

Properties:

Read

Type:

Double

Unit:

V

Provides internal voltage readings on the Signal Output board for monitoring.

/DEV…​./STATS/PHYSICAL/SYNTHESIZER/CURRENTS/n

Properties:

Read

Type:

Double

Unit:

A

Provides internal current readings on the Synthesizer board for monitoring.

/DEV…​./STATS/PHYSICAL/SYNTHESIZER/TEMPERATURES/n

Properties:

Read

Type:

Double

Unit:

°C

Provides internal temperature readings on the Synthesizer board for monitoring.

/DEV…​./STATS/PHYSICAL/SYNTHESIZER/VOLTAGES/n

Properties:

Read

Type:

Double

Unit:

V

Provides internal voltage readings on the Synthesizer board for monitoring.

STATUS

/DEV…​./STATUS/ADC0MAX

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The maximum value on Signal Input 1 (ADC0) during 100 ms.

/DEV…​./STATUS/ADC0MIN

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The minimum value on Signal Input 1 (ADC0) during 100 ms

/DEV…​./STATUS/ADC1MAX

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The maximum value on Signal Input 2 (ADC1) during 100 ms.

/DEV…​./STATUS/ADC1MIN

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The minimum value on Signal Input 2 (ADC1) during 100 ms

/DEV…​./STATUS/FIFOLEVEL

Properties:

Read

Type:

Double

Unit:

None

USB FIFO level: Indicates the USB FIFO fill level inside the device. When 100%, data is lost

/DEV…​./STATUS/TIME

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The current timestamp.

/DEV…​./STATUS/FLAGS/BINARY

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

A set of binary flags giving an indication of the state of various parts of the device. Reserved for future use.

/DEV…​./STATUS/FLAGS/PACKETLOSSTCP

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Flag indicating if tcp packages have been lost.

/DEV…​./STATUS/FLAGS/PACKETLOSSUDP

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Flag indicating if udp packages have been lost.

SYSTEM

/DEV…​./SYSTEM/ACTIVEINTERFACE

Properties:

Read

Type:

String

Unit:

None

Currently active interface of the device.

/DEV…​./SYSTEM/FPGAREVISION

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

HDL firmware revision.

/DEV…​./SYSTEM/FWREVISION

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Revision of the device-internal controller software.

/DEV…​./SYSTEM/IDENTIFY

Properties:

Read, Write

Type:

Integer (64 bit)

Unit:

None

Setting this node to 1 will cause all frontpanel LEDs to blink for 5 seconds, then return to their previous state.

/DEV…​./SYSTEM/INTERFACESPEED

Properties:

Read

Type:

String

Unit:

None

Speed of the currently active interface (USB only).

/DEV…​./SYSTEM/OWNER

Properties:

Read

Type:

String

Unit:

None

Returns the current owner of the device (IP).

/DEV…​./SYSTEM/SHUTDOWN

Properties:

Read, Write

Type:

Integer (64 bit)

Unit:

None

Sending a '1' to this node initiates a shutdown of the operating system on the device. It is recommended to trigger this shutdown before switching the device off with the hardware switch at the back side of the device.

/DEV…​./SYSTEM/STALL

Properties:

Read, Write

Type:

Integer (64 bit)

Unit:

None

Indicates if the network connection is stalled.

/DEV…​./SYSTEM/UPDATE

Properties:

Read, Write

Type:

Integer (64 bit)

Unit:

None

Requests update of the device firmware and bitstream from the dataserver.

/DEV…​./SYSTEM/AWG/CHANNELGROUPING

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Sets the channel grouping mode of the device.

0

groups_of_2

Use the outputs in groups of 2. One sequencer program controls 2 outputs (use /dev…​./awgs/0..4/).

1

groups_of_4

Use the outputs in groups of 4. One sequencer program controls 4 outputs (use /dev…​./awgs/0/ and /dev…​./awgs/2/)

2

groups_of_8

Use the outputs in groups of 8. One sequencer program controls 8 outputs (use /dev…​./awgs/0/). Requires 8 channel device.

/DEV…​./SYSTEM/BOARDREVISIONS/n

Properties:

Read

Type:

String

Unit:

None

Hardware revision of the motherboard containing the FPGA.

/DEV…​./SYSTEM/PROPERTIES/FREQRESOLUTION

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The number of bits used to represent a frequency.

/DEV…​./SYSTEM/PROPERTIES/FREQSCALING

Properties:

Read

Type:

Double

Unit:

None

The scale factor to use to convert a frequency represented as a freqresolution-bit integer to a floating point value.

/DEV…​./SYSTEM/PROPERTIES/MAXFREQ

Properties:

Read

Type:

Double

Unit:

None

The maximum oscillator frequency that can be set.

/DEV…​./SYSTEM/PROPERTIES/MAXTIMECONSTANT

Properties:

Read

Type:

Double

Unit:

None

The maximum demodulator time constant that can be set.

/DEV…​./SYSTEM/PROPERTIES/MINFREQ

Properties:

Read

Type:

Double

Unit:

None

The minimum oscillator frequency that can be set.

/DEV…​./SYSTEM/PROPERTIES/MINTIMECONSTANT

Properties:

Read

Type:

Double

Unit:

None

The minimum demodulator time constant that can be set.

/DEV…​./SYSTEM/PROPERTIES/NEGATIVEFREQ

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Indicates whether negative frequencies are supported.

/DEV…​./SYSTEM/PROPERTIES/TIMEBASE

Properties:

Read

Type:

Double

Unit:

s

Minimal time difference between two timestamps. The value is equal to 1/(maximum sampling rate).

/DEV…​./SYSTEM/NICS/n/DEFAULTGATEWAY

Properties:

Read, Write

Type:

String

Unit:

None

Default gateway configuration for the network connection.

/DEV…​./SYSTEM/NICS/n/DEFAULTIP4

Properties:

Read, Write

Type:

String

Unit:

None

IPv4 address of the device to use if static IP is enabled.

/DEV…​./SYSTEM/NICS/n/DEFAULTMASK

Properties:

Read, Write

Type:

String

Unit:

None

IPv4 mask in case of static IP.

/DEV…​./SYSTEM/NICS/n/GATEWAY

Properties:

Read

Type:

String

Unit:

None

Current network gateway.

/DEV…​./SYSTEM/NICS/n/IP4

Properties:

Read

Type:

String

Unit:

None

Current IPv4 of the device.

/DEV…​./SYSTEM/NICS/n/MAC

Properties:

Read

Type:

String

Unit:

None

Current MAC address of the device network interface.

/DEV…​./SYSTEM/NICS/n/MASK

Properties:

Read

Type:

String

Unit:

None

Current network mask.

/DEV…​./SYSTEM/NICS/n/SAVEIP

Properties:

Read, Write

Type:

Integer (64 bit)

Unit:

None

If written, this action will program the defined static IP address to the device.

/DEV…​./SYSTEM/NICS/n/STATIC

Properties:

Read, Write

Type:

Integer (64 bit)

Unit:

None

Enable this flag if the device is used in a network with fixed IP assignment without a DHCP server.

/DEV…​./SYSTEM/CLOCKS/REFERENCECLOCK/IN/FREQ

Properties:

Read

Type:

Double

Unit:

Hz

Indicates the frequency of the reference clock.

/DEV…​./SYSTEM/CLOCKS/REFERENCECLOCK/IN/SOURCE

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

The intended reference clock source. When the source is changed, all the instruments connected with ZSync links will be disconnected. The connection should be re-established manually.

0

internal

The internal clock is intended to be used as the frequency and time base reference.

1

external

An external clock is intended to be used as the frequency and time base reference. Provide a clean and stable 10 MHz or 100 MHz reference to the appropriate back panel connector.

2

zsync

The ZSync clock is intended to be used as the frequency and time base reference.

/DEV…​./SYSTEM/CLOCKS/REFERENCECLOCK/IN/SOURCEACTUAL

Properties:

Read

Type:

Integer (enumerated)

Unit:

None

The actual reference clock source.

0

internal

The internal clock is used as the frequency and time base reference.

1

external

An external clock is used as the frequency and time base reference.

2

zsync

The ZSync clock is used as the frequency and time base reference.

/DEV…​./SYSTEM/CLOCKS/REFERENCECLOCK/IN/STATUS

Properties:

Read

Type:

Integer (enumerated)

Unit:

None

Status of the reference clock.

0

Reference clock has been locked on.

1

There was an error locking onto the reference clock signal.

2

The device is busy trying to lock onto the reference clock signal.

/DEV…​./SYSTEM/CLOCKS/REFERENCECLOCK/OUT/ENABLE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Enable clock signal on the reference clock output. When the clock output is turned on or off, all the instruments connected with ZSync links will be disconnected. The connection should be re-established manually.

/DEV…​./SYSTEM/CLOCKS/REFERENCECLOCK/OUT/FREQ

Properties:

Read, Write, Setting

Type:

Double

Unit:

Hz

Select the frequency of the output reference clock. Only 10 MHz and 100 MHz are allowed. When the frequency is changed, all the instruments connected with ZSync links will be disconnected. The connection should be re-established manually.

ZI (LabOne Data Server Nodes)

/ZI/ABOUT/COMMIT

Properties:

Read

Type:

String

Unit:

None

Contains the commit hash of the source code used to build this version of the LabOne software.

/ZI/ABOUT/COPYRIGHT

Properties:

Read

Type:

String

Unit:

None

Holds the copyright notice.

/ZI/ABOUT/DATASERVER

Properties:

Read

Type:

String

Unit:

None

Contains information about the Zurich Instruments Data Server.

/ZI/ABOUT/FWREVISION

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Contains the revision of the device firmware.

/ZI/ABOUT/REVISION

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

Contains the revision number of the Zurich Instruments Data Server.

/ZI/ABOUT/VERSION

Properties:

Read

Type:

String

Unit:

None

Contains the version of the LabOne software.

/ZI/CLOCKBASE

Properties:

Read

Type:

Double

Unit:

None

A fallback clock frequency that can be used by clients for calculating time bases when no other is available.

/ZI/CONFIG/OPEN

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Enable communication with the LabOne Data Server from other computers in the network.

0

local

Communication only possible with the local machine.

1

network

Communication possible with other machines in the network.

/ZI/CONFIG/PORT

Properties:

Read

Type:

Integer (64 bit)

Unit:

None

The IP port on which the LabOne Data Server listens.

/ZI/DEBUG/LEVEL

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Set the logging level (amount of detail) of the LabOne Data Server.

0

trace

Trace. Messages designated as traces are logged.

1

debug

Debug. Messages designated as debugging info are logged.

2

info

Info. Messages designated as informational are logged.

3

status

Status. Messages designated as status info are logged.

4

warning

Warning. Messages designated as warnings are logged.

5

error

Error. Messages designated as errors are logged.

6

fatal

Fatal. Messages designated as fatal errors are logged.

/ZI/DEBUG/LOG

Properties:

Read

Type:

String

Unit:

None

Returns the logfile text of the LabOne Data Server.

/ZI/DEBUG/LOGPATH

Properties:

Read

Type:

String

Unit:

None

Returns the path of the log directory.

/ZI/DEVICES/CONNECTED

Properties:

Read

Type:

String

Unit:

None

Contains a list of devices connected to the LabOne Data Server.

/ZI/DEVICES/DISCOVER

Properties:

Read, Write

Type:

String

Unit:

None

Not used.

/ZI/DEVICES/VISIBLE

Properties:

Read

Type:

String

Unit:

None

Contains a list of devices in the network visible to the LabOne Data Server.

/ZI/MDS/GROUPS/n/DEVICES

Properties:

Read, Write, Setting

Type:

String

Unit:

None

Contains a list of devices in this synchronization group.

/ZI/MDS/GROUPS/n/KEEPALIVE

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Set by the MDS module to indicate control over this synchronization group.

/ZI/MDS/GROUPS/n/LOCKED

Properties:

Read, Write, Setting

Type:

Integer (64 bit)

Unit:

None

Indicates whether the device group is locked by a MDS module.

/ZI/MDS/GROUPS/n/STATUS

Properties:

Read, Write, Setting

Type:

Integer (enumerated)

Unit:

None

Indicates the status the synchronization group.

-1

Error. An error occurred in the synchronization process.

0

New

1

Sync

2

Alive

/ZI/SYSTEM/USAGEDATA

Properties:

Read

Type:

String

Unit:

None

Contains a JSON formatted string giving usage information about the LabOne Software (which tabs/modules used, error conditions).