# Support & Troubleshooting **URL:** https://forum.liquidinstruments.com/c/support-and-troubleshooting/13.md?page=1 [Latest](https://forum.liquidinstruments.com/latest.md) · [Categories](https://forum.liquidinstruments.com/categories.md) **Page:** 2 --- ## [API access to Latch in PID Controller & Laser Lock Box](https://forum.liquidinstruments.com/t/api-access-to-latch-in-pid-controller-laser-lock-box/1247)
**Author:** [@dgrass](https://forum.liquidinstruments.com/u/dgrass)\ **Replies:** 2\ **Last updated:** [November 10, 2025, 8:22am UTC](https://forum.liquidinstruments.com/t/api-access-to-latch-in-pid-controller-laser-lock-box/1247 "2025-11-10T08:22:32Z")
I don’t see API access to the “latch” before and after the PID control filter in the PID controller (and the latches after the controllers in the Laser Lock Box). Does the ability to open and close these latch exist? If … --- ## [Correcting incompatible moku exception when connecting via python](https://forum.liquidinstruments.com/t/correcting-incompatible-moku-exception-when-connecting-via-python/1245)
**Author:** [@Cameron8](https://forum.liquidinstruments.com/u/Cameron8)\ **Replies:** 6\ **Last updated:** [November 18, 2025, 7:25pm UTC](https://forum.liquidinstruments.com/t/correcting-incompatible-moku-exception-when-connecting-via-python/1245 "2025-11-18T19:25:52Z")
Hello, I’m trying to set up a python API to communicate with my Moku:lab, but have fallen at the first hurdle of simply connecting them. I have pip installed moku version 4.0.3.1 and downloaded/set up mokucli version 4.… --- ## [Python API Broken in MIM and 4.0.3](https://forum.liquidinstruments.com/t/python-api-broken-in-mim-and-4-0-3/1243)
**Author:** [@Azercoco](https://forum.liquidinstruments.com/u/Azercoco)\ **Replies:** 4\ **Last updated:** [December 12, 2025, 11:38pm UTC](https://forum.liquidinstruments.com/t/python-api-broken-in-mim-and-4-0-3/1243 "2025-12-12T23:38:34Z")
Moku model: Moku:Pro Operating system: Windows 11 Software version: 4.0.3 Bug or support request description: Several Python API commands related to the Laser Lock and FIR Filter Box do not work. Command I tested: … --- ## [Mokucli files list error](https://forum.liquidinstruments.com/t/mokucli-files-list-error/1241)
**Author:** [@bbean](https://forum.liquidinstruments.com/u/bbean)\ **Replies:** 2\ **Last updated:** [October 28, 2025, 11:13am UTC](https://forum.liquidinstruments.com/t/mokucli-files-list-error/1241 "2025-10-28T11:13:53Z")
Moku model: Pro Operating system: Windows 11 Software version: 4.0.3 mokucli version: 4.0.2.1 Bug or support request description: mokucli files list command hangs and return 503 error. Is there a newer mokucli vers… --- ## [Moku:Go "This Moku has no Instruments" after FW update](https://forum.liquidinstruments.com/t/moku-go-this-moku-has-no-instruments-after-fw-update/1235)
**Author:** [@jz13138](https://forum.liquidinstruments.com/u/jz13138)\ **Replies:** 1\ **Last updated:** [October 13, 2025, 5:33pm UTC](https://forum.liquidinstruments.com/t/moku-go-this-moku-has-no-instruments-after-fw-update/1235 "2025-10-13T17:33:38Z")
I am using MokuOS 4.0.3. on Windows 10 (64bit). After the installation a firmware update has been suggested and was completed sucessfully. Now, MokuOS shows “This Moku has no Instruments”. The device can’t be used. P… --- ## [Bug: Windows app MokuPro datalogger voltage depending on sampling rate](https://forum.liquidinstruments.com/t/bug-windows-app-mokupro-datalogger-voltage-depending-on-sampling-rate/1234)
**Author:** [@Ruben](https://forum.liquidinstruments.com/u/Ruben)\ **Replies:** 2\ **Last updated:** [October 9, 2025, 8:07pm UTC](https://forum.liquidinstruments.com/t/bug-windows-app-mokupro-datalogger-voltage-depending-on-sampling-rate/1234 "2025-10-09T20:07:40Z")
Moku model: Moku:Pro Operating system: Windows 10 Software version: 4.0 (I believe) Bug or support request description: Hello, I recently encountered a strange bug in the Moku Windows software. When changing the sa… --- ## [Simultaneous two outputs](https://forum.liquidinstruments.com/t/simultaneous-two-outputs/1233)
**Author:** [@miaomaoke](https://forum.liquidinstruments.com/u/miaomaoke)\ **Replies:** 2\ **Last updated:** [October 8, 2025, 6:17pm UTC](https://forum.liquidinstruments.com/t/simultaneous-two-outputs/1233 "2025-10-08T18:17:56Z")
Moku model: Moku Go Operating system: Windows 10 Software version: Moku API 3.3.1.1 MokuCli 4.0.1 Bug or support request description: How to ensure that both output ports in Moku Go operate simultaneously when using t… --- ## [Python API: Data Logger sampling rate sometimes differs from the set value](https://forum.liquidinstruments.com/t/python-api-data-logger-sampling-rate-sometimes-differs-from-the-set-value/1228)
**Author:** [@xiangyuwei](https://forum.liquidinstruments.com/u/xiangyuwei)\ **Replies:** 9\ **Last updated:** [October 7, 2025, 7:24pm UTC](https://forum.liquidinstruments.com/t/python-api-data-logger-sampling-rate-sometimes-differs-from-the-set-value/1228 "2025-10-07T19:24:51Z")
Product / Environment Information Device: Moku:Go Firmware version: 622 Moku App / driver version: 4.0.3 OS: Windows 11 Python version: 3.13 Issue Summary When setting the Data Logger sampling rate via… --- ## [Load .mokuconf file in python API](https://forum.liquidinstruments.com/t/load-mokuconf-file-in-python-api/1227)
**Author:** [@jephwack](https://forum.liquidinstruments.com/u/jephwack)\ **Replies:** 2\ **Last updated:** [September 19, 2025, 6:49pm UTC](https://forum.liquidinstruments.com/t/load-mokuconf-file-in-python-api/1227 "2025-09-19T18:49:23Z")
Is it possible to load a .mokuconf file in the python API? This would be a very useful feature, I can’t find any mention of this in the docs. --- ## [MultiInstrument](https://forum.liquidinstruments.com/t/multiinstrument/1226)
**Author:** [@miaomaoke](https://forum.liquidinstruments.com/u/miaomaoke)\ **Replies:** 3\ **Last updated:** [September 9, 2025, 12:21am UTC](https://forum.liquidinstruments.com/t/multiinstrument/1226 "2025-09-09T00:21:49Z")
Moku model:Moku Go Operating system: Windows 10 Software version:Moku API 3.3.1.1 MokuCli 2.3.0 Bug or support request description: when using the ArbitraryWaveformGenerator and Oscilloscope in MultiInstrument model, … --- ## [Start\_streaming error](https://forum.liquidinstruments.com/t/start-streaming-error/1225)
**Author:** [@miaomaoke](https://forum.liquidinstruments.com/u/miaomaoke)\ **Replies:** 2\ **Last updated:** [September 2, 2025, 10:12pm UTC](https://forum.liquidinstruments.com/t/start-streaming-error/1225 "2025-09-02T22:12:20Z")
Moku model:Moku Go Operating system: Windows 10 Software version:Moku API 3.3.1.1 MokuCli 4.0.1 Bug or support request description:when running the code “start\_streaming“, then return the error list index out of range… --- ## [Datalogger get\_stream\_data() execution time increase](https://forum.liquidinstruments.com/t/datalogger-get-stream-data-execution-time-increase/1214)
**Author:** [@michkern](https://forum.liquidinstruments.com/u/michkern)\ **Replies:** 1\ **Last updated:** [July 10, 2025, 10:54pm UTC](https://forum.liquidinstruments.com/t/datalogger-get-stream-data-execution-time-increase/1214 "2025-07-10T22:54:05Z")
Moku model: Go Operating system: Windows, Matlab API Software version: Bug or support request description: When periodically fetching data from the Datalogger stream over a longer period of time (hours), the executio… --- ## [Set\_trigger mode Single?](https://forum.liquidinstruments.com/t/set-trigger-mode-single/1213)
**Author:** [@bbean](https://forum.liquidinstruments.com/u/bbean)\ **Replies:** 1\ **Last updated:** [July 9, 2025, 8:28pm UTC](https://forum.liquidinstruments.com/t/set-trigger-mode-single/1213 "2025-07-09T20:28:38Z")
\*\*Moku model:Moku Go \*\*Operating system:Win 11 \*\*Software version:3.3.2.1 Bug or support request description: For the Oscilliscope Set\_trigger mode in the API, why is ‘Single’ trigger not available? Its available o… --- ## [API read-only mode](https://forum.liquidinstruments.com/t/api-read-only-mode/1210)
**Author:** [@admitrieff](https://forum.liquidinstruments.com/u/admitrieff)\ **Replies:** 2\ **Last updated:** [July 10, 2025, 4:44am UTC](https://forum.liquidinstruments.com/t/api-read-only-mode/1210 "2025-07-10T04:44:01Z")
Moku model: All Operating system: All Software version: All Bug or support request description: Hi all, I was wondering if there was a read-only way to monitor the state and/or get data through the API from a device t… --- ## [Moku pro clipping](https://forum.liquidinstruments.com/t/moku-pro-clipping/1208)
**Author:** [@fliou](https://forum.liquidinstruments.com/u/fliou)\ **Replies:** 1\ **Last updated:** [June 25, 2025, 4:39am UTC](https://forum.liquidinstruments.com/t/moku-pro-clipping/1208 "2025-06-25T04:39:17Z")
Hi, I’m using the Moku:Pro and the python API with the demo script oscilloscope\_deep\_memory\_mode.py, and I’m looking at a ~2Vpp, 5MHz square wave signal from a signal generator. On the Moku app I see a distorted square … --- ## [WaveGenerator Burst Mode in MultiInstruments with Oscilloscope](https://forum.liquidinstruments.com/t/wavegenerator-burst-mode-in-multiinstruments-with-oscilloscope/1205)
**Author:** [@hwedwards](https://forum.liquidinstruments.com/u/hwedwards)\ **Replies:** 1\ **Last updated:** [June 13, 2025, 9:53pm UTC](https://forum.liquidinstruments.com/t/wavegenerator-burst-mode-in-multiinstruments-with-oscilloscope/1205 "2025-06-13T21:53:57Z")
Hi, I am working on a project involving plasmas. To run the plasma, I need to supply a pulse with width 20us repeating at 500Hz. I would then like to turn this plasma “on” and “off” at a certain frequency, say 4 hz. I… --- ## [LockInAmplifier set monitor doesn't work in all configurations](https://forum.liquidinstruments.com/t/lockinamplifier-set-monitor-doesnt-work-in-all-configurations/1199)
**Author:** [@JackAttack720](https://forum.liquidinstruments.com/u/JackAttack720)\ **Replies:** 5\ **Last updated:** [June 4, 2025, 6:35pm UTC](https://forum.liquidinstruments.com/t/lockinamplifier-set-monitor-doesnt-work-in-all-configurations/1199 "2025-06-04T18:35:58Z")
Moku model: Moku:Go M2 Operating system: Windows 11 Software version: 3.3.3 Bug or support request description: Noticed a bug where when I have an instance of a LockInAmplifier instrument, lia lia.set\_monitor(1, 'In… --- ## [Number of points for Arbitrary Waveform Generator](https://forum.liquidinstruments.com/t/number-of-points-for-arbitrary-waveform-generator/1197)
**Author:** [@alejandromarjim](https://forum.liquidinstruments.com/u/alejandromarjim)\ **Replies:** 1\ **Last updated:** [May 28, 2025, 6:02pm UTC](https://forum.liquidinstruments.com/t/number-of-points-for-arbitrary-waveform-generator/1197 "2025-05-28T18:02:28Z")
Hi peeps, I’m an intensive user of the Moku Arbitrary Waveform Generator on the Pro version. I use the burst mode, with just one cycle, and I’m triggering the output signal. The thing is: I input the repetition rate of … --- ## [MATLAB Moku Appi Oscilloscope](https://forum.liquidinstruments.com/t/matlab-moku-appi-oscilloscope/1196)
**Author:** [@alejandromarjim](https://forum.liquidinstruments.com/u/alejandromarjim)\ **Replies:** 1\ **Last updated:** [May 28, 2025, 6:25pm UTC](https://forum.liquidinstruments.com/t/matlab-moku-appi-oscilloscope/1196 "2025-05-28T18:25:19Z")
Hi peeps, I’m using the oscilloscope through the MATLAB API. The thing is, there are commands to set up the time scale. However, I cannot find a way to set up the sampling rate properly (to force Moku to stick to a samp… --- ## [Reproduce ADC Input Noise Plot on Moku:Pro](https://forum.liquidinstruments.com/t/reproduce-adc-input-noise-plot-on-moku-pro/1190)
**Author:** [@xiangyuwei](https://forum.liquidinstruments.com/u/xiangyuwei)\ **Replies:** 1\ **Last updated:** [May 7, 2025, 9:54pm UTC](https://forum.liquidinstruments.com/t/reproduce-adc-input-noise-plot-on-moku-pro/1190 "2025-05-07T21:54:41Z")
Dear Moku Support Team, I recently came across the ADC input noise plot for Moku:Pro (attached below for reference). I would like to reproduce a similar plot on my own Moku:Pro device to evaluate the noise performance o… --- ## [Error in Data Streaming from Laser Lock Box](https://forum.liquidinstruments.com/t/error-in-data-streaming-from-laser-lock-box/1189)
**Author:** [@T\_Hinds](https://forum.liquidinstruments.com/u/T_Hinds)\ **Replies:** 1\ **Last updated:** [May 8, 2025, 11:03pm UTC](https://forum.liquidinstruments.com/t/error-in-data-streaming-from-laser-lock-box/1189 "2025-05-08T23:03:42Z")
Moku model:Pro Operating system: Windows 11 OS build 26100.3476 Software version: 3.3.2.2 firmware 601 Hello, I am attempting to stream signals using the datalogger built in to the Laser Lock Box, as a part of a MiM … --- ## [Moku:lab does not recognize sd card/ ipad can not find moku:lab](https://forum.liquidinstruments.com/t/moku-lab-does-not-recognize-sd-card-ipad-can-not-find-moku-lab/1188)
**Author:** [@Saman](https://forum.liquidinstruments.com/u/Saman)\ **Replies:** 1\ **Last updated:** [May 6, 2025, 9:16pm UTC](https://forum.liquidinstruments.com/t/moku-lab-does-not-recognize-sd-card-ipad-can-not-find-moku-lab/1188 "2025-05-06T21:16:46Z")
Moku Model: Moku:Lab Operating System: Windows / macOS Software Version: 601 Bug or Support Request Description: Dear Support Team, First of all, I would like to thank you for your excellent support and quick respon… --- ## [Transfer Function of the PID Controller in Advanced Mode](https://forum.liquidinstruments.com/t/transfer-function-of-the-pid-controller-in-advanced-mode/1176)
**Author:** [@KSantec](https://forum.liquidinstruments.com/u/KSantec)\ **Replies:** 2\ **Last updated:** [April 22, 2025, 11:31pm UTC](https://forum.liquidinstruments.com/t/transfer-function-of-the-pid-controller-in-advanced-mode/1176 "2025-04-22T23:31:49Z")
Hello, What is the transfer function of the Moku:Go PID controller in advanced mode? I read the application notes about the PID controller, but it only explained the transfer function in basic mode. Thank you, Kenny --- ## [Multiple triggers in sequence](https://forum.liquidinstruments.com/t/multiple-triggers-in-sequence/1173)
**Author:** [@1000NightsAKnight](https://forum.liquidinstruments.com/u/1000NightsAKnight)\ **Replies:** 3\ **Last updated:** [April 16, 2025, 8:02pm UTC](https://forum.liquidinstruments.com/t/multiple-triggers-in-sequence/1173 "2025-04-16T20:02:17Z")
Hello MokuPro Users, I have been studying Data Acquisition using the Deep Memory Mode of the oscilloscope in this example. The following lines allow us to get a single triggered frame and save it to the buffer: … --- ## [Data acquisition without sd card!](https://forum.liquidinstruments.com/t/data-acquisition-without-sd-card/1170)
**Author:** [@Saman](https://forum.liquidinstruments.com/u/Saman)\ **Replies:** 4\ **Last updated:** [May 2, 2025, 9:33pm UTC](https://forum.liquidinstruments.com/t/data-acquisition-without-sd-card/1170 "2025-05-02T21:33:56Z")
\*\*Moku model: Moku:lab Operating system: Ubuntu Software version: 601 Bug or support request description: Dear all, I would like to know, if there is any opportunity to log or stream data without downloading the .li f… --- ## [Windows App Freezing and Moku unresponsive](https://forum.liquidinstruments.com/t/windows-app-freezing-and-moku-unresponsive/1163)
**Author:** [@T\_Hinds](https://forum.liquidinstruments.com/u/T_Hinds)\ **Replies:** 4\ **Last updated:** [April 8, 2025, 9:24pm UTC](https://forum.liquidinstruments.com/t/windows-app-freezing-and-moku-unresponsive/1163 "2025-04-08T21:24:00Z")
Moku model:Pro Operating system:Windows 11 OS build 26100.3476 Software version:3.3.2.2 firmware 601 Greetings, I am using the Windows Moku app to develop a Multi-Instrument configuration running on a Moku:Pro. In th… --- ## [Mokucli files commands](https://forum.liquidinstruments.com/t/mokucli-files-commands/1162)
**Author:** [@bbean](https://forum.liquidinstruments.com/u/bbean)\ **Replies:** 1\ **Last updated:** [April 4, 2025, 9:40pm UTC](https://forum.liquidinstruments.com/t/mokucli-files-commands/1162 "2025-04-04T21:40:46Z")
Two questions: Can ‘mokucli file download’ be run on a file thats being used during an acquisition? Our users run long term tests that run overnight and they would like to periodically download the files and run post pr… --- ## [Trigger Setup for Ring-Down Test in Datalogger](https://forum.liquidinstruments.com/t/trigger-setup-for-ring-down-test-in-datalogger/1157)
**Author:** [@xiangyuwei](https://forum.liquidinstruments.com/u/xiangyuwei)\ **Replies:** 3\ **Last updated:** [March 26, 2025, 11:12pm UTC](https://forum.liquidinstruments.com/t/trigger-setup-for-ring-down-test-in-datalogger/1157 "2025-03-26T23:12:48Z")
This is a follow-up to the Trigger Setup for Ring-Down Test in Oscilloscope discussion. I’ve tried using the Datalogger instead, since the sampling rate of the Oscilloscope app isn’t high enough for capturing longer-dura… --- ## [Trigger Setup for Ring-Down Test in Oscilloscope](https://forum.liquidinstruments.com/t/trigger-setup-for-ring-down-test-in-oscilloscope/1155)
**Author:** [@xiangyuwei](https://forum.liquidinstruments.com/u/xiangyuwei)\ **Replies:** 2\ **Last updated:** [March 26, 2025, 8:14pm UTC](https://forum.liquidinstruments.com/t/trigger-setup-for-ring-down-test-in-oscilloscope/1155 "2025-03-26T20:14:12Z")
Dear Moku Support Team, I am currently working on a ring-down test using Moku, and I would like to ask for guidance on how to configure the trigger settings appropriately. In my setup, I am driving a system with a sine… --- ## [Python API Oscilloscope Averaging](https://forum.liquidinstruments.com/t/python-api-oscilloscope-averaging/1153)
**Author:** [@ecekbb](https://forum.liquidinstruments.com/u/ecekbb)\ **Replies:** 2\ **Last updated:** [March 28, 2025, 3:45pm UTC](https://forum.liquidinstruments.com/t/python-api-oscilloscope-averaging/1153 "2025-03-28T15:45:23Z")
Hello, Although there is an option to do Averaging on the oscilloscope with the Multi-instrument mode, it seems that this option is not there for the Python API. Is there any way you can integrate this? This would be an… [Previous page](https://forum.liquidinstruments.com/c/support-and-troubleshooting/13.md) [Next page](https://forum.liquidinstruments.com/c/support-and-troubleshooting/13.md?page=2)