Aalborg SDPROCs - Manual (Page 38)

33
Calibration Mode Display
Proceed with instructions outlined in sections g.1 and g.2.
g.1 Digital to Analog (D/A) Slope Calibration
Select the D/A calibration mode from the Calibration Menu. The following display will
appear.
NOTE: The digital to analog (D/A) slope has to be calibrated for each channel
individually!
Using an accurate digital multimeter, measure the A/D output DC voltage between pins
9 (positive) and 10 (ground) of the Channel 1 15 pin “D” connector. Set the output DC
voltage for exactly 5.000 VDC using the “+” and “-” controls (UP and DOWN buttons
respectively, on the front panel of the SDPROC). When the “+” or “-” controls is
pressed at least once, the following display will appear.
The display should show the D/A value between 3900 and 4095. Save the D/A slope
parameter by pressing CAL (ENTER button). For the one channel SDPROC the follow-
ing display will confirm your setting.
Press any key to return to the Calibration Mode Display.
For Multi channel SDPROC's, the calibration software will prompt for the second channel.
Using an accurate digital multimeter, measure the D/A output DC voltage between pins
9 (positive) and 10 (ground) of the Channel 2 15 pin “D” connector. Set the output DC
voltage for exactly 5.000 VDC using the “+” and “-” controls (UP and DOWN buttons
respectively, on front panel of SDPROC). When the “+” or “-” controls are pressed at
least once, the following display will appear.
,