Add Siglent SDS1204 driver

ngscopeclient / scopehal

Test and measurement hardware abstraction library and protocol decodes. This is the library only. Most users should use scopehal-apps.

BSD 3-Clause "New" or "Revised" License

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Add Siglent SDS1204 driver #11

Closed azonenberg closed 4 years ago

azonenberg commented 5 years ago

Seems to be a Siglent OEM version of the LeCroy WaveAce. Almost the same SCPI command set as MAUI scopes, but via raw TCP instead of VICP.

azonenberg commented 5 years ago

Per @four0four : there appears to be a firmware bug in which WF? queries occasionally are dropped and need to be re-sent.

four0four commented 5 years ago

Another Siglent quirk is that sometimes it appears to crash if commands are sent too rapidly - mostly observed with INR. Not sure if this is just what happens to be sent the most or there's a queuing issue in Siglent's firmware. Either way, possible fixes are rate limiting INRs, or (better) slowing queries when retrying.

four0four commented 4 years ago

Better understand the issues now: tl;dr is that the scopes will occasionally ACK a SCPI request and simply not fill it. We can work around this by adding a back-off timeout and retry to avoid the current situation, which results in deadlocks in the UI thread.

Support pending workaround is available as of 99468ea, so I'm closing this.