HP 400D Operating And Service Manual

Models 400D/H/L Appendix C
i MANUAL BACKDATING CHANGES
MODELS 400D/H/L, H02-400D
VACUUM TUBE VOLTMETER
Manual Serial Prefixed: 310- (400D/H02-400D)
313- (400H/L)
-hp- Part No. 400D/H/L-902)
This manual backdating sheet makes this manual applicable to earlier instru-
ments. Instrument-component values that differ from those in the manual,
yet are not listed in the backdating sheet, should be replaced using the part
number given in the manual.
Make Manual Changes Make Manual Changes
Below 310- “45570 Below
Care 313-22176 B 048-
sa 048- 13256 = 389 nd belay
O17-
ALL
CHANGE #1 Section V, Figure 5-10, Voltmeter Schematic Diagram:
l
420V AC
420V AC
63V AC
=
om
7.3V AC
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{
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1
1
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1
1
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1
1
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6.3VAC
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Figure 1

HP 400D Specifications

General

Brand	HP
Model	400D
Category	Measuring Instruments
Language	English