Measurement Computing CIO-DAS08/JR - Manual (Page 12)

CIO-DAS08/JR User's Guide Installing the CIO-DAS08/JR
12
Optional analog output capability
 You can add analog output capability to the CIO-DAS08/JR with the CIO-DUAL-DAC upgrade kit. This
kit includes a two channel D/A AD7237 chip that when installed add two analog outputs to the board.
 To install, insert the AD7237 chip into the socket labeled U13. Align the notch or dimple indicating pin 1
on the chip with the notch in the white silkscreen outline printed on the board at the U13 position. Details
on the CIO-DUAL-DAC kit are available on our web site at
www.mccdaq.com/isa-data-acquisition/CIO-
DUAL-DAC.aspx .
Calibrating the CIO-DAS08/JR
You can quickly calibrate the CIO-DAS08/JR using InstaCal. The CIO-DAS08/JR has a fixed input range and
does not have any input amplification or gain/offset compensation electronics. When using the optional
Universal Library, all compensation for gain/offset errors is done in software after the signal is acquired. The
gain and offset calibration factors are stored in the CB.CFG configuration file and applied to the analog
samples after they are acquired.
Run the Calibrate option from InstaCal to set the calibration factors.