Keithley SourceMeter 3A 2420 Service Manual page 118

B-6 Command Reference
Table B-2
Recommended :CALibration:PROTected:SENSe parameter ranges
Sense
range
0.2V
2V
20V
60V
10µA
100µA
1mA
10mA
100mA
1A
3A
Note: Actual allowable parameter ranges are ±50% of full range for zero parameters, 75% of full
scale to 150% of full scale for full-range parameters, but ranges listed above should be observed
for optimum calibration.
:SOURCE
(:CALibration:PROTected:SOURce)
Purpose
Format
Parameters
Description
Note
First parameter Second parameter
(zero) (negative full scale)
0.002 to +0.002 -0.18 to -0.22
0.02 to +0.02 -1.8 to -2.2
0.2 to +0.2 -18 to -22
0.5 to +0.5 -50 to -65
-1E-7 to +1E-7 -9E-6 to -11E-6
-1E-6 to +1E-6 -90E-6 to -110E-6
-1E-5 to +1E-5 -0.9E-3 to -1.1E-3
-1E-4 to +1E-4 -9E-3 to -11E-3
-1E-3 to +1E-3 -90E-3 to -110E-3
-1E-2 to +1E-2 -0.9 to -1.1
-3E-2 to 3E-2 -2.7 to -3.15
To calibrate the source function.
:cal:prot:sour <nrf>
See Table B-3 for recommended parameter ranges.
The :CAL:PROT:SOUR command calibrates the Model 2420 source func-
tion. To use this command, you must (1) program the source to the correct
value, (2) select the range being calibrated, and (3) send the
:CAL:PROT:SOUR command for each parameter listed in Table B-3.
When the Model 2420 receives this command, it will attempt to place the pa-
rameter into one of the four parameter ranges summarized in Table B-3, de-
pending on the active :SOUR:FUNC and range. If the parameter does not fit
into any of the four allowed ranges, an error number -222, "Parameter data
out of range" will be generated. Once the unit has successfully selected the
appropriate parameter range, it will then check to see if if the active source is
programmed to a value within the selected parameter range, and that
:OUTP:STAT is ON. If the active source is not programmed to a value within the
parameter range (or if the source is in autorange or in standby), an error num-
ber -221, "Settings conflict" will be generated. If no error occurs, the active
source function/range point will be calibrated using the corresponding pa-
rameter.
Third parameter
(positive full scale)
+0.18 to +0.22
+1.8 to +2.2
+18 to +22
+50 to +65
+9E-6 to +11E-6
+90E-6 to +110E-6
+0.9E-3 to +1.1E-3
+9E-3 to +11E-3
+90E-3 to +110E-3
+0.9 to +1.1
+2.7 to +3.15