14
The following performance tests are provided to ensure that the meter is in proper operating condition.
If the instrument fails any of the performance tests, then calibration adjustment and/or repair is
needed. To perform these tests, you will need a 5520A Multifunction Calibrator or equivalents. Each
of the measurements listed in the following steps assume the instrument is being tested after a
one-hour warmup, in an environment with an ambient temperature of 18 to 28
℃
, and a relative
humidity of less than70%.
NOTE
All measurements listed in the performance test tables are made in the slow reading rate unless
otherwise noted.
1. Connect a test lead from the Output NORMAL HI and LO connectors of the 5520A to the V
Ω
and COM connectors on the meter (see Figure 4-1).
Select the Volts dc, Volts ac, Resistance or Frequency
function and range on the meter and the input level
from the 5520A. The display should meet the request
listed in Section 6.
2. Connect a test lead from the output AUX HI
and LO connectors of the 5520A to the mA
and COM connectors on the meter (see
Figure 4-2). Select the Current ac or
Current dc function and 300mA range on
the meter and the input level from the 5520A. The display should meet the request listed in
Section 6.
3. Connect a test lead from the output 20A HI and LO connectors of the 5520A to the 10A and COM
connectors on the meter (see Figure 4-3). Select the Current dc or Current ac function and 10A
range on the meter and the input level from the 5520A. The display read should meet the request
listed in Section 6.
SERVICE
If you suspect that the meter has failed, review this manual to make sure you are operating it correctly.
If the meter still fails to operate properly, pack it securely (in its original container if available) and
forward it, postage paid, to the nearest Service Center. Assumes no responsibility for damage in
transit.
SECTION 5
Calibration
INTRODUCTION
To ensure the accuracy and the stability of the meter, the meter should be calibrated on a regular cycle of one
year.
STANDARD SOURSE
5520A
AUX
NORMAL
SCOPE
TRIG
OUT
MAX
750V
1000V
10A FUSED
250V
ALL INPUTS
1KV MAX
FAST FUSE
500mA
mA
Figure 4-1
STANDARD SOURCE
5520A
AUX
NORMAL
SCOPE
TRIG
OUT
MAX
750V
1000V
10A FUSED
250V
ALL INPUTS
1KV MAX
FAST FUSE
500mA
mA
Figure 4-2.
STANDARD SOURCE
5520A
AUX
NORMAL
SCOPE
TRIG
OUT
MAX
750V
1000V
10A FUSED
250V
ALL INPUTS
1KV MAX
FAST FUSE
500mA
mA
Figure 4-3.
