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MODEL 1000N
c) Voltmeter - Mode of Operation:
When the push-to-measure button is up, the Model 1000 Megohmmeter functions as a DC or
an AC voltmeter. The input resistance is close to R214 + R215 = 90 K Ω . The voltage is
reduced by means of (R212) and (R213) and rectified by the diode (CR10) and (CR11).
R214
47 K
R215
47 K
R214
47 K
R215
47 K
4/21/2005
REPAIR AND CALIBRATION MANUAL
C202
1 uF
R212
R213
2.67 M
291 K
C202
1 uF
R212
R213
2.67 M
291 K
REV. 7: March 13, 2004
FILE LOCATION: Manuals - Cal. Man - 1000MAN.DOC
--Positive voltage
--Positive alternation
CR10
+
G
-
R50
R51
--Negative voltage
--Negative alternation
CR11
-
G
+
R51
R50
9
CAT. #185.100
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