Resistance Test; High-Frequency Ac Voltage Test - Fluke 8842A Instruction Manual

8842A
Instruction Manual
STEP
NUMBER
1
2 *
3 *
4 *
5 *
6 *
7
8
* Quick test points.
6-6.

Resistance Test

The following procedure may be used to verify the accuracy of the 2-wire and 4-wire
ohms functions.
1. Ensure the 8842A is on and has warmed up for at least 1 hour.
2. Connect the Resistance Calibrator to the 8842A for 4-wire ohms.
3. For each step in Table 6-5, select the indicated range, set the Resistance Calibrator
A new OFFSET must be stored for each new range selected.
a. Test the 4-wire ohms function:
b. Test the 2-wire ohms function:
6-8
Table 6-4. High-Frequency AC Voltage Test
RANGE INPUT
VOLTAGE
200 mV 0.010000V
200 mV 0.010000V
2V 0.10000V
20V 1.0000V
200V 10.000V
700V 100.00V
20V 19.0000V
200 mV 0.190000V
for the specified nominal input. When the input is 0 (short), press the OFFSET
switch and verify that the OFFSET anunciator is illuminated.
1. Select the 4-wire ohms function.
2. Verify that the displayed reading is within the limits shown for
each reading rate.
1. Select the 2-wire ohms function. (The SENSE test leads need not
be disconnected.)
2. Verify that the displayed reading is within the limits shown for
each reading rate.
ERROR
IN
FREQUENCY
COUNTS
50 kHz 169
100 kHz 350
100 kHz 350
100 kHz 350
100 kHz 350
100 kHz 350
100 kHz 1250
100 kHz 1250
NOTE
TEST LIMITS (IN VOLTS)
MIN MAX
09.831 mVAC 10.169 mVAC
09.650 mVAC 10.350 mVAC
0.09650 VAC 0.10350 VAC
0.9650 VAC 1.0350 VAC
09.650 VAC 10.350 VAC
96.50 VAC 103.50 VAC
18.8750 VAC 19.1250 VAC
188.750 mVAC 191.250 mVAC