Solartron Mobrey 3595 4C, User Manual

Page: 95 / 128

3595 4C User Manual Part Two IMP Commands
35952350 (CH01/AA)
1-43
CH CI
(CHannel Calibrate current)
CH n CI x y
Where: n is an integer that defines the channel number, in the range 1
≤
n
≤
4
x = the measured current value, corresponding to an non-calibrated 0.004A output
y = the measured current value, corresponding to an non-calibrated 0.02A output
Values x and y are both in amps, in floating-point format.
Note: This command applies only to an IMP type 1D with a ‘3595 3Y’ connector block.
Function: Allows current calibration of a specific output channel. This should normally be left to
Solartron Mobrey, or those users with specialist reference equipment.
Response: Stream 3, 4 characters C n I e , where: n is the channel number and e represents the calibration
response, as shown in Table 1.18.
Equipment: Same as for CH CV command.
Procedure: The procedure for calibrating the output current of a type 1D IMP is:
1 – 5
Same as for CH CV command.
6.
Using the CH VO command, set the channel output current first to 0.004A and
second to 0.02A, and in each case, measure the current actually output by the IMP.
7.
Using the measurements obtained in Step 6, send the channel calibrate current
command
CH n CI xy . In this command, x is the actual current measured when
0.004A was requested and y is the actual voltage measured when 0.02A was
requested.
8.
Check the calibration response in stream 3 (see Table 1.18 on page 1-42) to ensure
that the IMP channel has been successfully calibrated.