HP 203A - Set REFERENCE

Моде! 203А | Section У
Paragraph 5-7
Table 5-2
Table 5-2. Frequency Dial Calibration
Counter Frequency Measurement
above 100 cps
Minimum
Maximum
Minimum
Maximum
1980
2020
495
305
1650
1684
594
606
1415
1443
693
707
1238
1263
193
808
1100
1122
891
909
990
1010
990
1010
825
843
1188
1212
707
121
1386
1414
582
594
1683
1717
495
505
1980
2020
396
404
2475
2525
330
336
2970
3030
247
253
3960
4040
198
202
4950
5050
165
169
5940
6060
ИДЕ
f.
Vary
Model
203A
FREQUENCY
from
5
cps
to
g. DC voltmeter reading should stay between 6.86
DO
NOT
EXCEED
7.
5MILLIVOLT
OUTPUT
and
7.14
millivolts,
AS THE THERMAL CONVERTER IS VERY | E
EASILY
DAMAGED
BY
EXCESSIVE
INPUT
h.
Repeat
steps
b
thru
g
for
VARIABLE
PHASE
-
VOLTAGE, OUTPUT. |
с. Set REFERENCE PHASE ~ OUTPUT for a }. Disconnect resistor, thermal converter and
reading of 4, 9 уас on the ac voltmeter. de voltmeter.
d.
Disconnect
AC
Voltmeter.
5-7.
SINE
WAVE
CHECK,
e.
Slowly
adjust
REFERENCE
PHASE
~
OUTPUT
А
for
ас
voltmeter
reading
of
7.0
millivolts.
a.
Connect
Model
203A
as
shown
in
figure
5-3.
01760-2
5-3