Front Panel Voltage Calibration - Keithley SourceMeter 3A 2420 Service Manual

2-10 Calibration
Table 2-3

Front panel voltage calibration

Source
range*
0.2V
2V
20V
60V
*Use EDIT and RANGE keys to select source range.
**Multimeter reading used in corresponding calibration step. See procedure.
Step 3: Current calibration
Perform the steps below for each current range, using Table 2-4 as a guide.
1.
Figure 2-2
10 µ A to 1A range current
calibration test connections
Source voltage
+200.00mV
+000.00mV
-200.00mV
-000.00mV
+2.0000V
+0.0000V
-2.0000V
-0.0000V
+20.000V
+00.000V
-20.000V
-00.000V
+60.000V
+00.000V
-60.000V
-00.000V
Connect the Model 2420 to the digital multimeter, as shown in Figure 2-2. Select the
multimeter DC current measurement function.
EDIT V I
DISPLAY
0 1
TOGGLE
LOCAL REL
POWER
6 7
DIGITS SPEED
Digital Multimeter
Multimeter voltage
reading**
___________ mV
___________ mV
___________ mV
___________ mV
___________ V
___________ V
___________ V
___________ V
___________ V
___________ V
___________ V
___________ V
___________ V
___________ V
___________ V
___________ V
4- WIRE INPUT/
SENSE OUTPUT
HI
75V 5V 75V
PEAK PEAK PEAK

2420 3A SourceMeter
LO
MEAS SOURCE 250V
PEAK
Ω
FCTN V I
RANGE
2 3 4 5 EDIT
AUTO TERMINALS
FILTER LIMIT TRIG SWEEP
RANGE ON/OFF FRONT/
8 9 +/-
REAR
STORE RECALL CONFIG MENU EXIT ENTER
OUTPUT
Model 2420
Input LO
Amps