Voltage Measurement Accuracy - Keithley 2430 Service Manual

Figure 1-1
Connections for voltage
verification tests
4.
5.
6.
Table 1-3
Output voltage accuracy limits
Model 2430
source range
200mV
2V
20V
100V

Voltage measurement accuracy

Follow the steps below to verify that Model 2430 voltage measurement accuracy is within
specified limits. The test involves setting the source voltage to full-range values, as measured
by a precision digital multimeter, and then verifying that the Model 2430 voltage readings are
within required limits.
1.
V
EDIT
DISPLAY
0
TOGGLE
LOCAL REL
POWER 6
DIGITS SPEED
Digital Multimeter
Verify output voltage accuracy for each of the voltages listed in Table 1-3. For each test
point:
• Select the correct source range.
• Set the Model 2430 output voltage to the indicated value.
• Verify that the multimeter reading is within the limits given in the table.
Repeat the procedure for negative output voltages with the same magnitudes as those
listed in Table 1-3.
Repeat the entire procedure using the rear panel INPUT/OUTPUT jacks. Be sure to
select the rear panel jacks with the front panel TERMINALS key.
Model 2430 output
voltage setting
200.000mV
2.00000V
20.0000V
100.000V
With the power off, connect the digital multimeter to the Model 2430 INPUT/OUTPUT
jacks, as shown in Figure 1-1.
4- WIRE INPUT/
SENSE OUTPUT
HI
125V 5V 125V
PEAK PEAK PEAK
®
2430 1KW PULSE SourceMeter
LO
250V
MEAS SOURCE
PEAK
!
Ω
I I
FCTN V
RANGE
1 2 3 4 5 EDIT
AUTO TERMINALS
FILTER LIMIT TRIG SWEEP
ON/OFF
7 +/- RANGE FRONT/
8 9
REAR
STORE RECALL CONFIG MENU EXIT ENTER
OUTPUT
Model 2430
Input HI
Output voltage limits
(1 year, 18°C to 28°C)
199.360 to 200.640mV
1.99900 to 2.00100V
19.9936 to 20.0064V
99.968 to 100.032V
Performance Verification
Input LO
1-9