Fluke 825A - Page 28

825А
f. 50 V DC RANGE DIVIDER CALIBRATION (2) Apply 5 volts DC (+0. 01%) to voltmeter.
(1) Set switches on 825A as follows: (3) Null 825A meter by adjusting 5 V ADJ control
R326.
RANGE 50
NULL 0.01
Voltage read- 49. 9910
out dials im
(2) Apply 50 volts DC (40.01%) to voltmeter. h. 0.5 V DC RANGE DIVIDER CALIBRATION
(3) Null 825A meter by adjusting 50 V ADJ control (1) Set switches on 825A as follows:
R323.
RANGE 0.5
g. 5 V DC RANGE DIVIDER CALIBRATION NULL 0. 001
(1) Set switches on 825A as follows: Voltage read- . 499910
out dials
RANGE 5
NULL 0.001 (2) Apply 0.5 volts DC (40.01%) to voltmeter.
Voltage read- 4. 99910 (3) Null 825A meter by adjusting . 5 V ADJ control
out dials R329.
VOLTMETER
] О,
a UNDER TEST
SPECIAL PRECISION
VOLTAGE DIVIDER
ESI #X194
EPPLEY L &N САМО
STD. CELL #2430A 5.6 K+10%
#100A
MODEL 301C OR 301E
COARSE & FINE SWITCHES ARE MOMENTARY PUSH BUTTON
TYPE SHOWN IN NORMAL UNDEPRESSED POSITION.
SINCE THESE SWITCHES ARE IN THE STANDARD CELL
CIRCUIT THEY MUST HAVE FINE SILVER CONTACTS.
Figure 4-7. CALIBRATION CONNECTION DIAGRAM
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