HP 8340A Operating Manual page 112

Operating Information
DESCRIPTION
The line power module contains a safety fuse, and a PC card that is used as a switch to
match the HP 8340A's power supply to the locally available ac power.
PANEL LAYOUT
HECEPTACLE FOR PnlMARY POWER COHO
·OPERATING·VOLTAGE APPE/\nS IN MODULE WINDOW.
FUNCTIONS
The HP 8340A requires a maximum of 500 VA of electrical power (40 VA in STANDBY)
that is delivered to the instrument through the line power module. The module setting must
match the locally available voltage, and be fused to provide a measure of safety to the
instrument and the operator.
To determine the module's voltage setting, first measure the locally available ac power
source. The HP 8340A requires either 100, 120, 200, or 240 volts with a tolerance of± 10%.
The HP 8340A also requires an ac frequency of 47.5 Hz to 66 Hz (400 Hz can he used in
Option 003 instruments). Some installations may need an autotransformer and/or frequency
converters to meet the voltage and frequency requirements. After obtaining suitable voltage
and ac frequency, position the PC selector card as shown in the accompanying
illustration.
The proper fuse rating also corresponds to the voltage selection, and these ratings are
printed on the rear panel of the HP 8340A adjacent to the line power module (the fuses are
also listed in Section II (Installation) of this Manual).
Appropriate power line cords are listed in Section II (Installation).
3-44
Figure 3-24.
Power Line Module
Scans by HB9HCA and HB9FSX
SELECTIDN OF OPERATING VOLTAGE
I. Sl.IOE OPEN POWER MODllLE covrn DOOR
/\NO PU LL FUSE-PULL LEV EH ro Lf. F T TO
REMOVE FUSE.
2. PULL OUT VOLTAGE-SELECTOR PC �DARO.
POSITION PC BOl\RO SO THAT VOLTAGE
NEAREST ACTUAL LINE VOLTAGE LEVEL
WILL APPEAR IN MOUULE WINDOW. PUSH
80ARD 8ACK INTO ITS SLOT.
3.
PUSH FUSE-PULL LEVER INTO ITS NORMAL
RIGHT-HAND POSITION.
4, CHECK FUSE TD MAKE SURE IT IS OF COR·
RECT RATING AND TYPE FOR INPUT AC
LINE VOLTAGE. FUSE RATINGS FOR D
FERENT LINE VOLTAGES ARE PAINTEn
ADJACENT TD THE POWER MODULE.
5, INSERT CORRECT FUSE IN FUSEHOLUER.
Model 8340A