Keithley SourceMeter 2425, Service Manual

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2-20 Calibration Model 2425 Service Manual
Table 2-7
Recommended :CALibration:PROTected:SOURce parameter ranges
Source range
First parameter
(negative full scale)
Second parameter
(negative zero)
Third parameter
(positive full scale)
Fourth parameter
(positive zero)
0.2V
2V
20V
100V
10
μ
A
100
μ
A
1mA
10mA
100mA
1A
3A
-0.18 to -0.22
-1.8 to -2.2
-18 to -22
-90 to -110
-9E-6 to -11E-6
-90E-6 to -110E-6
-0.9E-3 to -1.1E-3
-9E-3 to -1E-3
-90E-3 to -110E-3
-0.9 to -1.1
-2.7 to -3.15
-0.002 to +0.002
-0.02 to +0.02
-0.2 to +0.2
-1 to +1
-1E-7 to +1E-7
-1E-6 to +1E-6
-1E-5 to +1E-5
-1E-4 to +1E-4
-1E-3 to +1E-3
-1E-2 to +1E-2
-3E-2 to +3E-2
+0.18 to +0.22
+1.8 to +2.2
+18 to +22
+90 to +110
+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
-0.002 to +0.002
-0.02 to +0.02
-0.2 to +0.2
-1 to +1
-1E-7 to +1E-7
-1E-6 to +1E-6
-1E-5 to +1E-5
-1E-4 to +1E-4
-1E-3 to +1E-3
-1E-2 to +1E-2
-3E-2 to +3E-2
Note: Parameter steps for each range may be performed in any order, but all parameter steps for each range must be completed. For
optimum calibration, use parameters within recommended limits.
Remote calibration procedure
Step 1: Prepare the Model 2425 for calibration.
1. Connect the Model 2425 to the controller IEEE-488 interface or RS-232 port using
a shielded interface cable.
2. Turn on the Model 2425 and the test equipment, and allow them to warm up for at
least one hour before performing calibration.
3. If you are using the IEEE-488 interface, make sure the primary address of the
Model 2425 is the same as the address specified in the program you will be using
to send commands. (Use the MENU key and the COMMUNICATION menu to
access the IEEE-488 address.)
Step 2: Voltage calibration.
1. Connect the Model 2425 to the digital multimeter, and select the multimeter DC
volts function. (Figure 1-2).
2. Send the commands summarized in Table 2-8 in the order listed to initialize volt-
age calibration. (When the :CAL:PROT:CODE command is sent, the instrument
will assume the operating states listed in Table 2-2.)