Voltage Load Regulation
This test measures the change in output voltage resulting from a change in output current from full-
load to no-load or no-load to full-load.
Step Action Normal Result
1 Turn off the UUT and connect DMM and appropriate
load resistors as shown above.
2 Open S1.
3 Turn on the UUT. Program output to RANGE 155 V,
VOLT 80, FREQ 60
Voltage at 80 Vrms, output current near zero
4 Record voltage reading of DMM.
5 Disable UUT. Close S1.
6 Turn on the UUT. Program output to RANGE 155 V,
VOLT 80, FREQ 60
Voltage at 80 Vrms, CV annunciator on, output current near:
5 A for AC6801B
10 A for AC6802B
20 A for AC6803B
40 A for AC6804B
7 Record voltage reading of DMM.
8 Check test results The difference between the DMM readings in Steps 4 & 7 are
within specified load effect limits.
9 Disable the UUT. Open S1.
10 Turn on the UUT. Program output to RANGE 155 V,
VOLT 80, FREQ 500.
Voltage at 80 Vrms, output current near zero
11 Record voltage reading of DMM.
12 Disable UUT. Close S1.
13 Turn on the UUT. Voltage at 80 Vrms, CV annunciator on, output current near:
5 A for AC6801B
10 A for AC6802B
20 A for AC6803B
40 A for AC6804B
14 Record voltage reading of DMM.
15 Check test results The difference between the DMM readings in Steps 11 & 14 are
within specified load effect limits.
16 Disable UUT. Open S1.
17 Turn on the UUT. Program output to RANGE 310 V,
VOLT 160, FREQ 60
Voltage at 160 Vrms
Output current near zero
18 Record voltage reading of DMM.
19 Close S1. Turn on the UUT. Voltage at 160 Vrms, CV annunciator on, output current near:
2.5 A for AC6801B
5 A for AC6802B
10 A for AC6803B
20 A for AC6804B
4îîCalibration, Verification, and Service
180 Keysight AC6800B Series Operating and Service Guide
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