HP A Series User Manual

5-1 INTRODUCTION
5-2 Upon receipt of the power supply, the perfor¬
mance check of Paragraph 5-6 can be made. This
check is suitable for incoming inspection. Section III
contains a quick but less comprehensive checkout
procedure which can be used in lieu of the performance
check, if desired.
5-3 If a fault is detected in the power supply while
making the performance check or during normal oper¬
ation, proceed to the troubleshooting procedures
(Paragraph 5-37). After troubleshooting and repair
(Paragraph 5-54) repeat the performance check to
ensure that the fault has been properly corrected and
that no other faults exist. Before performing any main¬
tenance checks, turn on the power supply and allow a
half-hour warm-up.
5-4 TEST EQUIPMENT REQUIRED
5-5 Table 5-1 lists the test equipment required to
perform the various procedures described in this
section.
Table 5-1. Test Equipment Required
TYPE
REQUIRED
CHARACTERISTICS
USE
RECOMMENDED
MODEL
Digital
Voltmeter
Sensitivity; lOO/iV full scale
(min.). Input impedance:
10 megohms (min.).
Measure DC voltages:
calibration procedures
HP 3450A
Variable
Voltage
Transformer
Range: 90-130Vac.
Equipped with voltmeter
accurate within 1 Volt
Vary AC input
Oscilloscope
Sensitivity: 100/iV/cm.
Differential input.
Display transient re¬
sponse and ripple/
noise waveforms;
current limit adjust¬
ment.
HP140B plus 1400B
plug-in. 1402A plug-in
for noise measurements.
Repetitive
Load Sw.
Rate; 60Hz, 2iisec.
rise and fail time.
Measure transient
response.
See Figure 5-4.
Resistive
Load
Value: See Paragraph 5-11.
Tolerance: ±5%
Power supply load
resistor. (Fixed re¬
sistor or Rheostat).
James G. Biddle “Lubri-
Tact" Rheostat
41lG23CSor411G85CS.
Current
Sampling
Resistor (Shunt)
Value: See Paragraph 5-13.
Accuracy: 1% (minimum)
Measure output current
Simpson Portable Shunt,
06704.

HP A Series Specifications

General

Brand	HP
Model	A Series
Category	Power Supply
Language	English