HP 4262A Operating And Service Manual page 18

Section II
Model 4262A
Paragraph 2-12
SELECTION OF OPERATING VOLTAGE
1. Disconnect power cable and slide module
window to left.
2. Pul! FUSE PULL lever and rotate to left.
This removes line fuse
3. Select operation voltage by orienting PC
board to position desired voltage on top-
left side. Push board firmly into module
slot.
4. Rotate FUSE PULL lever back to its normal
position and re-insert fuse in holder be
careful to select correct fuse value.
Operating voltage is shown in module window
and is usually set to 120V at factory.
Operating Voltage
Fuse
HP Part No.
Description
lOOVac or 120Vac
220Vac or 240Vac
2110-0007
2110-0202
1 A 250V Slow Blow
0.5A 250V Slow Blow
Figure 2-1. Voltage and Fuse Selection.
National Electrical Manufacturer's Association
(NEMA) recommends that the instrument panel
and cabinet be grounded. The Model 4262A is e-
quipped with a three-conductor power cable which,
when plugged into an appropriate receptacle,
grounds the instrument. The offset pin on the
power cable is the ground wire,
2-12. To preserve the protection feature when
operating the instrument from a two contact
outlet, use a three prong to two prong adapter
(HP Part No. 5080-3149) and connect the
green grounding tab on the adapter to power
line ground.
CAUTION
THE MAINS PLUG MUST ONLY
BE INSERTED IN A SOCKET
OUTLET PROVIDED WITH A
PROTECTIVE EARTH CONTACT.
THE PROTECTIVE ACTION
MUST NOT BE NEGATED BY
THE USE OF AN EXTENSION
CORD (POWER CABLE) WITH¬
OUT PROTECTIVE CONDUCTOR
(GROUNDING).