Fluke 8842a Resistance Test, New Offset must be stored for each new range selected

8842A

Instruction Manual

Table 6-4. High-Frequency AC Voltage Test

STEP	RANGE
NUMBER

INPUT

VOLTAGE FREQUENCY

ERROR

IN

COUNTS

TEST LIMITS (IN VOLTS)

MIN MAX

1	200 mV
2 *	200 mV
3 *	2V
4 *	20V
5 *	200V
6 *	700V

720V

8200 mV

*Quick test points.

0.010000V	50 kHz
0.010000V	100 kHz
0.10000V	100 kHz
1.0000V	100 kHz
10.000V	100 kHz
100.00V	100 kHz
19.0000V	100 kHz
0.190000V	100 kHz

169

350

350

350

350

350

1250

1250

09.831 mVAC

09.650 mVAC

0.09650 VAC

0.9650 VAC

09.650 VAC

96.50VAC

18.8750 VAC

188.750 mVAC

10.169 mVAC

10.350 mVAC

0.10350 VAC

1.0350 VAC

10.350 VAC

103.50VAC 19.1250 VAC

191.250 mVAC

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 for the specified nominal input. When the input is 0Ω(short), press the OFFSET switch and verify that the OFFSET anunciator is illuminated.

NOTE

A new OFFSET must be stored for each new range selected.

a.Test the 4-wire ohms function:

1.Select the 4-wire ohms function.

2.Verify that the displayed reading is within the limits shown for each reading rate.

b.Test the 2-wire ohms function:

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.

6-8