5320A Users Manual Supplement
6/09 1
Change #1
On page 6-16, replace Table 6-11 with the following:
Nominal
Current
Required
Standard
Ammeter
Accuracy
Frequency
Start
Current
Increment
by
Lower
Limit
(mA)
Upper
Limit (mA)
25 mA ac 0.2 % Line Freq. 20 A 0.1 mA 24.75 ma 25.25 ma
250 mA ac 0.2 % Line Freq. 210 mA 1 mA 247.5 ma 252.5 ma
2500 mA ac 0.2 % Line Freq. 2.1 A 10 mA 2475 ma 2525 ma
Change #2
On page 7-8, replace the first Note with the following:
Note
The Resistance Multiplier is only used with insulation resistance testers with a third
terminal, commonly called the Guard terminal. Most testers of this type use a virtual
ground sensing circuit, that causes an input resistance of 0
. The Calibrator can
accommodate testers that have either 0
input impedance or a finite input impedance.
The Calibrator has a setup parameter, "R multiplier input", to accommodate different
input impedances for insulation testers. The "R multiplier input" has a default setting of
0
for the most common type of testers with a virtual ground sensing circuit. For other
testers with an infinite input impedance, the "R multiplier input" value must be set to
match the input resistance of the Unit Under Test.
To access the "R multiplier input" setting, press , press the softkey labeled Setup,
scroll down to High Resistance Source and then press the softkey labeled Select.
Choose "R multiplier input", which can be changed from 0 to 100.00 M
.
Change #3, 50723
On page 1-10, under Short Mode:
Change:
Nominal resistance……..<50 m
To:
Nominal resistance……..<100 m
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