Initial Inspection; Three-Conductor Power Cable; Internal Battery Operation; Ii Installation - HP 432A Manual

Model 432A
WARNING

2-1. INITIAL INSPECTION.

2–2. MECHANICAL CHECK.
2–3. If damage to the shipping carton is evident, ask that
the carrier's agent be present when the instrument is
unpacked. Inspect the instrument for mechanical
damage. Also check the cushioning material for signs of
severe stress.
2–4. PERFORMANCE CHECKS.
2–5. The electrical performance of the Model 432A
should be verified upon receipt. Performance checks
suitable for incoming inspection are given in Section V,
Maintenance.
2–6. DAMAGE CLAIMS.
2–7. If the instrument is mechanically damaged in
transit, notify the carrier and the nearest Hewlett-
Packard field office immediately. A list of field offices is
at the back of this manual. Retain the shipping carton
and padding material for the carrier's inspection. The
field office will arrange for replacement or repair of your
instrument without waiting for claim settlements
against the carrier.
2–8. Before shipment this instrument was inspected
and found free of mechanical and electrical defects. If
there is any deficiency, or if electrical performance is not
within specifications, notify your nearest Hewlett-
Packard Sales and Service Office.

2-9. THREE-CONDUCTOR POWER CABLE.

2–10. To protect operating personnel, the National
Electrical Manufacturers
recommends that the instrument panel and cabinet be
grounded. All Hewlett-Packard
equipped with a three-conductor power cable which,
when plugged into an appropriate receptacle, grounds
the instrument. The offset pin on the power cable three-
prong connector is the ground wire.
2–11. To preserve the
operating the instrument from a two-connector outlet,
use a three-prong to two-prong adapter and connect the
green pigtail on the adapter to ground.
2-12. PRIMARY POWER REQUIREMENTS.
2–13. The Model 432A operates from 115 or 230 volts ac
line voltage. Line frequency may vary from 48 to 440 Hz.
A slide switch on the rear panel is moved to the correct
position for the line voltage available. Before operating
the equipment, ensure that the fuse installed in the
instrument corresponds to the value marked on the
panel for the line voltage available (1/8 amp slo-blow).
INSTALLATION
If this instrument is not used as specified, the protection provided by
the equipment could be impaired. This instrument must be used in
a normal condition only (in which all means for protection are
intact).
Association (NEMA)
instruments are
protection feature when
SECTION II

2-14. INTERNAL BATTERY OPERATION.

2–15. Model 432A Option 001 instruments contain an
internal battery and a battery charging assembly. By
connecting the 432A to an ac source, the battery may be
charged overnight. The battery can be maintained in the
charging state indefinitely without damage. It will
assume its full capacity, 1.25 ampere-hours, and will not
charge in excess of that. This enables the instrument to
operate for approximately 20 hours continuously without
recharging.
2–16. BATTERY INSTALLATION.
a. Set power switch to off and remove power plug
from rear panel.
b. Remove top and bottom, and side instrument
covers.
c. The battery is installed with the terminals toward
the right hand side of the instrument when faced from
the front. The two terminals on the battery fit into spaces
provided on the circuit board.
d. Using the retaining nuts, fasten the battery firmly
in place. Be careful not to short the battery terminals at
any time as this may cause battery cell damage.
e. Install assembly A7, battery charging board, in
the space provided for it just ahead of the battery.
f. Reinstall instrument covers and adjust circuit.
Instrument is now ready for operation.
2–17. BATTERY STORAGE.
2–18. Store the battery at or below room temperature.
Extended storage at high temperature will reduce the
cell charge, but will not damage the battery if the storage
temperature is below 140°F. Install the battery in the
instrument and recharge before using Model 432A in
battery operation.
2-19. RACK MOUNTING.
2–20. Model 432A is narrower than full-rack width. It is
what is termed a sub-modular unit. When used alone,
the instrument can be bench mounted. When used in
combination with other sub-modular units it may be
bench or rack mounted. The HP 1051A and 1052A
Combining Cases and Rack Adapter Frames are
designed specifically for this purpose.
2–21. COMBINING CASE.
2–22. A model 1051A Combining Case is shown in
Figure 2–1. This case is full rack width and accepts
varying combinations of submodular instruments. The
case, purchased separately, is provided with a rack
mounting kit. The combining case will hold three
Section II
Installation
2-1