1587/1577
Calibration
20
Insulation Function, Source Voltage Accuracy Test
The following test verifies the accuracy of the source voltage for the insulation
function.
W
Caution
To prevent damage to the Test DMM use a HV Probe
(Divider) with the Test DMM when testing the 1000V
range of the UUT.
1.
Connect the output of the HV Probe to the V – Com inputs on the Test DMM and
turn the rotary switch to
E
.
2.
Connect the input of HV Probe to the
INSULATION
output terminals on the
UUT as shown in Figure 7.
3.
Set the rotary switch to
INSULATION
.
4.
Refer to Table 5, and complete steps 1 through 5. For each step, select the
specified range on the UUT, press
t
, and verify that the voltage readings
on both the UUT (lower right hand corner) and the DMM are within the limits
shown in the table.
MIN M
AX
HOL
D
REL
% ms
Hz
RAN
GE
dB
dB
ac+dc
ac+d
c
ac+dc
ac+dc
F
nS
mA
mA
A
mV
V
mV
V
OFF
C
A
A
A
A
mA
COM
V
TEMPERATURE
A
ac+dc
AutoH
OLD
LOGG
ING
SAV
E
CANC
EL
YES
NO
CLEA
R M
EM
VIEW
SETU
P
18
UUT
Test DMM
TEST
MIN MAX
HOLD
LO
INSULATION
ebp06f.eps
Figure 7. Source Voltage Accuracy Test
Table 5. Insulation Mode, Source Voltage Accuracy Tests
Step
Function
Range
Test DMM Display Reading
UUT Display Reading
1
Insulation
500 V
500.0 to 600.0
500 to 600
2
Insulation
1000V
1000.0 to 1200.0
1000 to 1200
1587 Only
3
Insulation
50V
50.0 to 60.0
50 to 60
4
Insulation
100V
100.0 to 120.0
100 to 120
5
Insulation
250V
250.0 to 300.0
250 to 300
