WISH: IOC & OPI for Stanford RS SR850 Lock-In Amplifier

ISISComputingGroup / IBEX

Closed kjwoodsISIS closed 1 month ago

kjwoodsISIS commented 3 years ago

As a WISH scientist I want to be able to control a Stanford RS SR850 Lock-In Amplifier in my experiments.

Check the WISH Instrument wiki.
The manufacturer's web-site describes the Stanford RS SR850.
A copy of the Stanford RS SR850 manual is located here: \isis\shares\ISIS_Experiment_Controls\Manuals\Stanford_Research_SR850.
The IOC & OPI must offer functionality equivalent to the existing VI (located here: C:\LabVIEW Modules\Drivers\Stanford SR850).
There are EPICS support modules for the Stanford RS SR830 devices at EPICS Hardware Support.

01:08:47 02/05/24

rerpha commented 2 years ago

From the VI it looks like they are just using the SR850 to change the frequency, so I may put a training ticket on this

davidkeymer commented 2 months ago

Required for WISH student project June/July 2024, and then for experiment Autumn 2024.

MVP requires logging of the frequency (as mentioned above), but setting of basic parameters (unknown at this stage) desirable.

UPDATE - see below for commands. Suggest replicating VI functionality as is relatively simple, rather than MVP.

davidkeymer commented 2 months ago

VI front panel:

Brief analysis of VI:

Device uses serial/RS232 rather than GPIB
Termination character for reads and writes is a carriage return: <CR> or \r or 0x0D
Sets frequency using FREQ command (the only write command used)
Reads frequency using FREQ?
Reads X, Y, R and Theta using OUTP ? x, where x is 1,2,3,4 respectively

davidkeymer commented 2 months ago

Have located unit. Team WISH double-checking it's the correct one.

Chsudeepta commented 1 month ago

The IOC and corresponding OPI has been created: