# Set Oscilloscope trigger in Multi-Instrument Mode?

**URL:** <https://forum.liquidinstruments.com/t/set-oscilloscope-trigger-in-multi-instrument-mode/1288>\
**Category:** Software & APIs\
**Created:** [July 31, 2026, 9:10pm UTC](https://forum.liquidinstruments.com/t/set-oscilloscope-trigger-in-multi-instrument-mode/1288 "2026-07-31T21:10:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cacollet](https://avatars.discourse-cdn.com/v4/letter/c/3bc359/32.png) [@cacollet](https://forum.liquidinstruments.com/u/cacollet)\
**Post date:** [July 31, 2026, 9:10pm UTC](https://forum.liquidinstruments.com/t/set-oscilloscope-trigger-in-multi-instrument-mode/1288/1 "2026-07-31T21:10:55Z")

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Hello!

I have a Moku:Go that I control using the Python API, and I am trying to set up a Multi-Instrument Mode Oscilloscope for some experiments. I can initialize it and set most of the necessary parameters, passing “Input1” to “Slot2InA” and “Input2” to “Slot2InB”. However whenever I try to run set\_trigger, it errors out. Running Oscilloscope.get\_sources() I see the sources are named “GenericInputA” and “GenericInputB”, but whatever I pass to set\_trigger it errors out with ‘GenericInputA is not a valid value for Trigger channel’. I have tried both GenericInputs, InputA and B, Input1 and 2, nothing works.

Is it possible to set the trigger for the Oscilloscope in Multi-Instrument Mode, and if so, how?

Thanks!

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**Author:** ![Dylan](https://avatars.discourse-cdn.com/v4/letter/d/e95f7d/32.png) [@Dylan](https://forum.liquidinstruments.com/u/Dylan)\
**Post date:** [August 3, 2026, 8:37pm UTC](https://forum.liquidinstruments.com/t/set-oscilloscope-trigger-in-multi-instrument-mode/1288/2 "2026-08-03T20:37:48Z")

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Hi @cacollet ,

Thank you for reaching out to Liquid Instruments! When using Multi-Instrument mode, the sources become `ChannelA`, `ChannelB`, and so on, so you should use either one of those as your trigger source. [Here](https://apis.liquidinstruments.com/api/reference/oscilloscope/set_trigger.html) is a link to our documentation which lists the sources available. I will raise a ticket with our team to update the documentation to make it more clear which sources to use in MiM vs in standalone mode. I hope this helps!

-Dylan

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**Author:** ![cacollet](https://avatars.discourse-cdn.com/v4/letter/c/3bc359/32.png) [@cacollet](https://forum.liquidinstruments.com/u/cacollet)\
**Post date:** [August 4, 2026, 1:43pm UTC](https://forum.liquidinstruments.com/t/set-oscilloscope-trigger-in-multi-instrument-mode/1288/3 "2026-08-04T13:43:31Z")

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Hi Dylan,

Thank you so much, that works perfectly!