Continuous Analog and Instrument (DMM) Acquistion

[Amplitude Modulation]

I need to get two channels of voltage from a Keithley 2001 with a scanner at up to 10/sec, and 9 channels of voltage (same data rate) from a DAQ board, all into a file with less than a one sample skew continously.

How can I synchronize the signal collection and disk i/o?

Many thanks

[Christopher Mitchell]

I searched the Keithley website and did find a GPIB driver for this instrument. Also, LabVIEW comes with Data Logger examples (Help >> Examples >> I/O Interfaces >> Data Acquisition). You would have to write a VI that would call the instrument driver and data logger simultanously.

One suggestion for synchronizing the the signal collection would be to send one channel of data through both the DMM and the DAQ card -- sort of a reference channel. Then, after data collection is over, you could compare the reference channel data from both the DMM and the DAQ card. If necessary, you could 're-allign' the datapoints...