Use a driver in different model will raise to an unknown behavior, actually, driver will check the *IDN? result from instrument and judge if the current instrument is supported and reject to serve for the unsupport models.
Here are some steps you could refer to for your case:
1. If the driver currently you downloaded are LabVIEW PnP type, it would be easy to find and modify it for your model. (driver location: <National Instrument>\LabVIEW xxxx\instr.lib\...)
2. Please send an mail to email@example.com for the new driver request.
1. I tried to modify, but I do not know what to modify because as I mentioned, I can not find the Programming Guide for this series.
I hope they will reply. I also wrote to companies asking for Rigol Programming Guide.