# Support & Troubleshooting **URL:** https://forum.liquidinstruments.com/c/support-and-troubleshooting/13.md?page=2 [Latest](https://forum.liquidinstruments.com/latest.md) · [Categories](https://forum.liquidinstruments.com/categories.md) **Page:** 3 --- ## [Synchronization problem with Multi-instrument Python API](https://forum.liquidinstruments.com/t/synchronization-problem-with-multi-instrument-python-api/1152)
**Author:** [@ecekbb](https://forum.liquidinstruments.com/u/ecekbb)\ **Replies:** 5\ **Last updated:** [April 1, 2025, 6:17pm UTC](https://forum.liquidinstruments.com/t/synchronization-problem-with-multi-instrument-python-api/1152 "2025-04-01T18:17:42Z")
Hello, I am trying to create two pulses from the two channels of the AWG and then observe it with the oscilloscope. Although in my code I call the functions “awg.sync\_phase()” and “m.sync()”, It creates the pulses in the… --- ## [Modulation in laser lock box mode](https://forum.liquidinstruments.com/t/modulation-in-laser-lock-box-mode/1148)
**Author:** [@Saman](https://forum.liquidinstruments.com/u/Saman)\ **Replies:** 2\ **Last updated:** [March 27, 2025, 9:44am UTC](https://forum.liquidinstruments.com/t/modulation-in-laser-lock-box-mode/1148 "2025-03-27T09:44:15Z")
Dear all, I am trying to set a modulation frequency in the laser lock box mode. There is clear documentation available for demodulation, but there doesn’t seem to be any for modulation. With the Windows app, I can modul… --- ## [Convert Theta in Lockin amplifier (voltage to degree)](https://forum.liquidinstruments.com/t/convert-theta-in-lockin-amplifier-voltage-to-degree/1147)
**Author:** [@xiangyuwei](https://forum.liquidinstruments.com/u/xiangyuwei)\ **Replies:** 1\ **Last updated:** [March 26, 2025, 5:16pm UTC](https://forum.liquidinstruments.com/t/convert-theta-in-lockin-amplifier-voltage-to-degree/1147 "2025-03-26T17:16:45Z")
Hi, I would appreciate your clarification regarding the relationship between the readout theta value (in volts) and the phase (in degrees or radians) of lockin amplifier. Specifically: What is the exact formula to con… --- ## [Problem with Labview Datalogger streaming](https://forum.liquidinstruments.com/t/problem-with-labview-datalogger-streaming/1143)
**Author:** [@zerokelvin](https://forum.liquidinstruments.com/u/zerokelvin)\ **Replies:** 3\ **Last updated:** [March 13, 2025, 6:22am UTC](https://forum.liquidinstruments.com/t/problem-with-labview-datalogger-streaming/1143 "2025-03-13T06:22:34Z")
I’m trying out examples provided in the most recent LabView APIs for MokuLab Other examples work fine, but in case of Datalogger streaming example, following error messages appear: As for NI-288.2 driver, it’s insta… --- ## [Mokucli 2.2.2 for linux/ubuntu](https://forum.liquidinstruments.com/t/mokucli-2-2-2-for-linux-ubuntu/1139)
**Author:** [@1000NightsAKnight](https://forum.liquidinstruments.com/u/1000NightsAKnight)\ **Replies:** 5\ **Last updated:** [March 27, 2025, 10:56pm UTC](https://forum.liquidinstruments.com/t/mokucli-2-2-2-for-linux-ubuntu/1139 "2025-03-27T22:56:01Z")
\*\*Moku model: MokuPro \*\* Operating system: Linux Software version: 3.3.3 Firmware 601 Hello Forum/Support, I having some trouble using streaming functions on Linux. I get the error message: Cannot find mokucli 2.2.… --- ## [Waveform generator has only single channel using MIM](https://forum.liquidinstruments.com/t/waveform-generator-has-only-single-channel-using-mim/1137)
**Author:** [@Axel](https://forum.liquidinstruments.com/u/Axel)\ **Replies:** 1\ **Last updated:** [March 7, 2025, 9:48pm UTC](https://forum.liquidinstruments.com/t/waveform-generator-has-only-single-channel-using-mim/1137 "2025-03-07T21:48:45Z")
I want to use the oscilloscope and the waveform generator simultaneously in MIM. For my experiment I do need both output ports from the waveform generator, but in MIM I get access only to one of the output ports. Is this… --- ## [Phase response of Moku:Go](https://forum.liquidinstruments.com/t/phase-response-of-moku-go/1134)
**Author:** [@JeromeJuillard](https://forum.liquidinstruments.com/u/JeromeJuillard)\ **Replies:** 13\ **Last updated:** [March 11, 2025, 8:56pm UTC](https://forum.liquidinstruments.com/t/phase-response-of-moku-go/1134 "2025-03-11T20:56:20Z")
Hello, Below is the frequency response I obtain when connecting Out1 to In1 with a BNC cable and performing a frequency sweep. The phase response is far from 0°, even at moderate frequencies, well below the amplitude cu… --- ## [Datalogger on Matlab API not streaming properly at low sampling rates](https://forum.liquidinstruments.com/t/datalogger-on-matlab-api-not-streaming-properly-at-low-sampling-rates/1133)
**Author:** [@azeytunyan](https://forum.liquidinstruments.com/u/azeytunyan)\ **Replies:** 5\ **Last updated:** [March 7, 2025, 9:45pm UTC](https://forum.liquidinstruments.com/t/datalogger-on-matlab-api-not-streaming-properly-at-low-sampling-rates/1133 "2025-03-07T21:45:19Z")
I want to use the Datalogger Matlab API to stream and plot data for some duration of time. I set the duration to 12 seconds, for example. At sampling rates lower than 10^4 the instrument cannot reach the desired duration… --- ## [Datalogger instrument not working on Moku Matlab 3.3.2](https://forum.liquidinstruments.com/t/datalogger-instrument-not-working-on-moku-matlab-3-3-2/1128)
**Author:** [@azeytunyan](https://forum.liquidinstruments.com/u/azeytunyan)\ **Replies:** 2\ **Last updated:** [February 25, 2025, 3:56pm UTC](https://forum.liquidinstruments.com/t/datalogger-instrument-not-working-on-moku-matlab-3-3-2/1128 "2025-02-25T15:56:55Z")
It seems like there is an issue with the latest release of the Moku Matlab API 3.3.2. I also updated the Moku CLI to the latest version 2.3.0. When trying to use the Datalogger instrument, I get the following message: E… --- ## [Streaming CLI path issue](https://forum.liquidinstruments.com/t/streaming-cli-path-issue/1127)
**Author:** [@JackAttack720](https://forum.liquidinstruments.com/u/JackAttack720)\ **Replies:** 4\ **Last updated:** [March 13, 2025, 1:56pm UTC](https://forum.liquidinstruments.com/t/streaming-cli-path-issue/1127 "2025-03-13T13:56:12Z")
Moku model: Moku:Go Operating system: Windows 11 Software version: MokuCLI: 2.2.3, Moku python API 3.3.3, Python 3.13.2 Firmware version: 601.0 Bug or support request description: When trying to start a streaming se… --- ## [Multi Instrument Moku Pro in Python Connections don't work](https://forum.liquidinstruments.com/t/multi-instrument-moku-pro-in-python-connections-dont-work/1121)
**Author:** [@ecekbb](https://forum.liquidinstruments.com/u/ecekbb)\ **Replies:** 3\ **Last updated:** [February 17, 2025, 2:08am UTC](https://forum.liquidinstruments.com/t/multi-instrument-moku-pro-in-python-connections-dont-work/1121 "2025-02-17T02:08:25Z")
Hello, I am trying the code on your website for the Multi-Instrument Moku-Pro. However, it keeps giving an error about the connections. I think it is related to the connections inside, between the wavegenerator and the … --- ## [MokuLab IPv6 connection via Python](https://forum.liquidinstruments.com/t/mokulab-ipv6-connection-via-python/1112)
**Author:** [@Droop](https://forum.liquidinstruments.com/u/Droop)\ **Replies:** 1\ **Last updated:** [February 7, 2025, 10:04am UTC](https://forum.liquidinstruments.com/t/mokulab-ipv6-connection-via-python/1112 "2025-02-07T10:04:26Z")
Hello, i am using an Moku:Lab which is connected via a USB Hub to the computer. It runs correctly in the Moku software. If i rightclick on the shown Moku:Lab in Moku Software, i can copy the IP which gives me an IPv6 st… --- ## [\`mokucli list\` Command Fails with KeyError (b'txtver') on Moku:Pro](https://forum.liquidinstruments.com/t/mokucli-list-command-fails-with-keyerror-btxtver-on-moku-pro/1111)
**Author:** [@xiangyuwei](https://forum.liquidinstruments.com/u/xiangyuwei)\ **Replies:** 1\ **Last updated:** [February 14, 2025, 5:45am UTC](https://forum.liquidinstruments.com/t/mokucli-list-command-fails-with-keyerror-btxtver-on-moku-pro/1111 "2025-02-14T05:45:03Z")
Moku model: Moku:Pro Operating system: Windows 11 Enterprise 23H2 22631.2861 Software version: Moku: 3.3.2.2(build 3251), firmware: 601.0 mokucli 2.3.0 Bug or support request description: When running the comma… --- ## [I.generate\_waveform()](https://forum.liquidinstruments.com/t/i-generate-waveform/1102)
**Author:** [@Saman](https://forum.liquidinstruments.com/u/Saman)\ **Replies:** 1\ **Last updated:** [January 27, 2025, 10:58pm UTC](https://forum.liquidinstruments.com/t/i-generate-waveform/1102 "2025-01-27T22:58:31Z")
Moku model: Moku:Lab Operating system: Ubuntu (Python API) Software version:(601) Bug or support request description: Dear all, I would like to generate a ramp signal which has it’s minimum at t=0. Every time I run t… --- ## [\[Python API\] BrokenPipeError when streaming successivly](https://forum.liquidinstruments.com/t/python-api-brokenpipeerror-when-streaming-successivly/1100)
**Author:** [@HugoMarot](https://forum.liquidinstruments.com/u/HugoMarot)\ **Replies:** 1\ **Last updated:** [January 23, 2025, 4:24am UTC](https://forum.liquidinstruments.com/t/python-api-brokenpipeerror-when-streaming-successivly/1100 "2025-01-23T04:24:05Z")
Moku model: Moku:GO Operating system: Windows 10 and 11 Software version: Moku firmware v601, Moku Python package v3.3.3, Moku CLI v2.3.0 Hi, I am trying to perform successive measurments with the datalogger using th… --- ## [Signal DC offset only in MIM](https://forum.liquidinstruments.com/t/signal-dc-offset-only-in-mim/1098)
**Author:** [@sgmt](https://forum.liquidinstruments.com/u/sgmt)\ **Replies:** 2\ **Last updated:** [January 22, 2025, 9:21am UTC](https://forum.liquidinstruments.com/t/signal-dc-offset-only-in-mim/1098 "2025-01-22T09:21:01Z")
Hi all, I’m measuring a signal from a photodiode. If I use the oscilloscope or lock-in as a single instrument it shows up normally, positive signal with a zero DC offset, and it disappears when I block the detector. How… --- ## [Ext. trig. does not work in arb. waveform gen. in burst mode](https://forum.liquidinstruments.com/t/ext-trig-does-not-work-in-arb-waveform-gen-in-burst-mode/1096)
**Author:** [@mschuette](https://forum.liquidinstruments.com/u/mschuette)\ **Replies:** 6\ **Last updated:** [January 24, 2025, 12:56pm UTC](https://forum.liquidinstruments.com/t/ext-trig-does-not-work-in-arb-waveform-gen-in-burst-mode/1096 "2025-01-24T12:56:25Z")
Title says it all pretty much. It works in the “standard” waveform generator, which btw has also an option for internal triggering source, which would be a welcome feature on the AWG instr. as well. --- ## [Frequency response analyzer should make it obvious that the SQUARE of the response function is plotted](https://forum.liquidinstruments.com/t/frequency-response-analyzer-should-make-it-obvious-that-the-square-of-the-response-function-is-plotted/1094)
**Author:** [@DanHickstein](https://forum.liquidinstruments.com/u/DanHickstein)\ **Replies:** 3\ **Last updated:** [January 21, 2025, 5:08am UTC](https://forum.liquidinstruments.com/t/frequency-response-analyzer-should-make-it-obvious-that-the-square-of-the-response-function-is-plotted/1094 "2025-01-21T05:08:55Z")
Hello! I’ve been using the frequency response analyzer function on the Moku:Go, and it’s pretty great! Today, I noticed that I was seeing twice the phase shift on the Moku software compared to when I looked at the voltag… --- ## [Load the instrument state from a saved file](https://forum.liquidinstruments.com/t/load-the-instrument-state-from-a-saved-file/1093)
**Author:** [@steven](https://forum.liquidinstruments.com/u/steven)\ **Replies:** 5\ **Last updated:** [January 12, 2025, 9:29pm UTC](https://forum.liquidinstruments.com/t/load-the-instrument-state-from-a-saved-file/1093 "2025-01-12T21:29:52Z")
In the save/recall setting in the Cloud Compile, can I load the settings from a saved files? That will be a great helpful. Thanks. --- ## [Repetitive data logging triggered by an external signal in a data logger](https://forum.liquidinstruments.com/t/repetitive-data-logging-triggered-by-an-external-signal-in-a-data-logger/1091)
**Author:** [@steven](https://forum.liquidinstruments.com/u/steven)\ **Replies:** 3\ **Last updated:** [January 8, 2025, 9:56pm UTC](https://forum.liquidinstruments.com/t/repetitive-data-logging-triggered-by-an-external-signal-in-a-data-logger/1091 "2025-01-08T21:56:05Z")
Can I set up repetitive data logging triggered by an external signal in a data logger? --- ## [MATLAB via a USB connection](https://forum.liquidinstruments.com/t/matlab-via-a-usb-connection/1089)
**Author:** [@onyu](https://forum.liquidinstruments.com/u/onyu)\ **Replies:** 16\ **Last updated:** [January 29, 2025, 10:45pm UTC](https://forum.liquidinstruments.com/t/matlab-via-a-usb-connection/1089 "2025-01-29T22:45:26Z")
Hello, I am using Moku:Go and would like to connect it to MATLAB via a USB connection. I have already downloaded the required Add-ons and API for MATLAB. However, when I attempt to communicate with Moku:Go using the IP … --- ## [Measurement values obscured in Windows App](https://forum.liquidinstruments.com/t/measurement-values-obscured-in-windows-app/1082)
**Author:** [@todd](https://forum.liquidinstruments.com/u/todd)\ **Replies:** 1\ **Last updated:** [December 10, 2024, 11:02pm UTC](https://forum.liquidinstruments.com/t/measurement-values-obscured-in-windows-app/1082 "2024-12-10T23:02:09Z")
Hi, Minor bug found with the Windows App, Spectrum Analyzer instrument. When using PSD units, the values for different measurement values (eg Mean, Min, Max, Std. Dev) appear too long for the display box, causing the fi… --- ## [Moku pro api possible bug: look up table data with AWG](https://forum.liquidinstruments.com/t/moku-pro-api-possible-bug-look-up-table-data-with-awg/1075)
**Author:** [@Jamesg](https://forum.liquidinstruments.com/u/Jamesg)\ **Replies:** 3\ **Last updated:** [December 4, 2024, 4:48pm UTC](https://forum.liquidinstruments.com/t/moku-pro-api-possible-bug-look-up-table-data-with-awg/1075 "2024-12-04T16:48:00Z")
I have just started to play around with the moku pro python API (moku 3.3.1, fw 600.0) and have successfully run a number of my own scripts, building off the example code and API documentation. Thanks for all of that, it… --- ## [PSRR measurements](https://forum.liquidinstruments.com/t/psrr-measurements/1070)
**Author:** [@emodica](https://forum.liquidinstruments.com/u/emodica)\ **Replies:** 1\ **Last updated:** [November 26, 2024, 4:47am UTC](https://forum.liquidinstruments.com/t/psrr-measurements/1070 "2024-11-26T04:47:40Z")
Hi Moku! We have a Moku Pro and I’m trying to configure to measure the ACPSRR of an LDO type device. To me, it seems like I need an output to do the swept sine (ac coupled), and also a VNA that can probe the signal on … --- ## [Data streaming / conversion on Raspberry Pi](https://forum.liquidinstruments.com/t/data-streaming-conversion-on-raspberry-pi/1068)
**Author:** [@robinvanzutphen](https://forum.liquidinstruments.com/u/robinvanzutphen)\ **Replies:** 2\ **Last updated:** [December 13, 2024, 1:19pm UTC](https://forum.liquidinstruments.com/t/data-streaming-conversion-on-raspberry-pi/1068 "2024-12-13T13:19:59Z")
I was using the stream\_to\_file function to acquire phasemeter data at 1.9 kS/s over two minutes. While trying to set up automation with a Raspberry Pi, I encountered an issue: mokucli was not available for raspberry pi a… --- ## [Python or Matlab API not connecting to the MOKU:Go](https://forum.liquidinstruments.com/t/python-or-matlab-api-not-connecting-to-the-moku-go/1067)
**Author:** [@Saforo](https://forum.liquidinstruments.com/u/Saforo)\ **Replies:** 1\ **Last updated:** [November 18, 2024, 4:51am UTC](https://forum.liquidinstruments.com/t/python-or-matlab-api-not-connecting-to-the-moku-go/1067 "2024-11-18T04:51:27Z")
Hello, some engineering students are trying to use the MOKU Go for signal processing applications. We managed to connect and get it working through USB but the Python and Matlab API guides say that we have to use it wire… --- ## [Cannot find mokucli 2.2.2](https://forum.liquidinstruments.com/t/cannot-find-mokucli-2-2-2/1065)
**Author:** [@luisseo](https://forum.liquidinstruments.com/u/luisseo)\ **Replies:** 1\ **Last updated:** [November 13, 2024, 11:05am UTC](https://forum.liquidinstruments.com/t/cannot-find-mokucli-2-2-2/1065 "2024-11-13T11:05:36Z")
\*\*Moku model: Moku Pro \*\* Operating system: Windows11 Software version: 3.3.1.1 Firmware 600 Cannot find mokucli 2.2.2. Please download latest version of the CLI from Utilities - Liquid Instruments. If you have alre… --- ## [Oscilloscope input range setting API bug with fw 600.0](https://forum.liquidinstruments.com/t/oscilloscope-input-range-setting-api-bug-with-fw-600-0/1059)
**Author:** [@todd](https://forum.liquidinstruments.com/u/todd)\ **Replies:** 3\ **Last updated:** [November 1, 2024, 4:20pm UTC](https://forum.liquidinstruments.com/t/oscilloscope-input-range-setting-api-bug-with-fw-600-0/1059 "2024-11-01T16:20:21Z")
Moku model: Pro Operating system: Python API on Windows and Linux Software version: 3.3.1.1, firmware version: 600.0 Bug or support request description: Since the update to 3.3.1.1 and firmware version 600, the API d… --- ## [Moku:Go The command of set\_event\_detector in tfa when mim](https://forum.liquidinstruments.com/t/moku-go-the-command-of-set-event-detector-in-tfa-when-mim/1057)
**Author:** [@STUDENT](https://forum.liquidinstruments.com/u/STUDENT)\ **Replies:** 3\ **Last updated:** [October 10, 2024, 1:36am UTC](https://forum.liquidinstruments.com/t/moku-go-the-command-of-set-event-detector-in-tfa-when-mim/1057 "2024-10-10T01:36:39Z")
\*\*Moku model:Go(591) \*\*Operating system:Win10 \*\*Software version:3.2.2 Bug or support request description: I want to employ Time & Frequency Analyzer in mim mode. But the source of command “set\_event\_detector” is fa… --- ## [Specify output in Python API for Moku Pro](https://forum.liquidinstruments.com/t/specify-output-in-python-api-for-moku-pro/1055)
**Author:** [@tangshi2010](https://forum.liquidinstruments.com/u/tangshi2010)\ **Replies:** 1\ **Last updated:** [October 15, 2024, 4:27am UTC](https://forum.liquidinstruments.com/t/specify-output-in-python-api-for-moku-pro/1055 "2024-10-15T04:27:55Z")
Hi, Anyone knows how to specify the output in Python API? I need to change the output from “50 Ohm” to “High Z” to enable 10Vpp +5V offset. i.generate\_waveform( channel=1, type=‘Sine’, amplitude=10.0, frequency=16… [Previous page](https://forum.liquidinstruments.com/c/support-and-troubleshooting/13.md?page=1) [Next page](https://forum.liquidinstruments.com/c/support-and-troubleshooting/13.md?page=3)