Introduction - Safety / Voltage Selection, continued 3
WARNING!!!
Please read before applying power
The transceiver is normally shipped for operation on 115
VAC, 50/60 Hz AC input line voltage. If your operating
voltage is different than this, please refer to FIGURE 1 on
this page. An internal jumper permits changing the
allowable AC input voltage to a nominal 230 VAC. In
addition, the rear panel accessible mains fuse must
change accordingly. Please be certain of the operating
voltage before connecting the transceiver to the mains
source.
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Note: The warranty does not cover damage as a result of
improper voltage selection, or replacement of the fuse
with ratings other than those specified.
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CAUTION
In accordance with international safety standards,
this instrument is equipped with a three-wire power
cable receptacle. The unit is shipped with a detach-
able type three-wire power cable intended for nomi-
nal 115 VAC mains supply. When connected to an
appropriate power line outlet, this cable grounds the
instrument cabinet. For operation of this unit on
nominal 230 VAC mains supply, use the proper
power cable assembly approved by your local codes.
For use of this product outside the U. S. A. or Canada
on supply voltages of 220 VAC or greater, the dis-
charge resistor (4.7 Meg Ohm) connected from the
neutral wire terminal of the AC input receptacle to the
receiver chassis must be removed.
WARNING
NOTE: THE FOLLOWING PROCEDURE REQUIRES REMOVAL OF AN
EQUIPMENT COVER THAT EXPOSES POTENTIALLY LETHAL VOLTAGES IF
THE EQUIPMENT IS POWERED FROM AN AC POWER SOURCE. REFER
SERVICING TO A QUALIFIED TECHNICIAN ONLY.
D)
Ensure that the jumper is set for either the 115 VAC or
the 230 VAC position as required for the AC Mains
supply. Install the proper fuse at the rear panel of the
TR270.
FIGURE 1 - AC Mains
Voltage Selection
Fuse:
3A, 250V (5x20mm) SLO-BLO
(factory installed)
Fuse:
T1.6A, 250V (5x20mm)
115 VAC
E)
Reinstall the power supply compartment cover by
using the cover, screws, and nuts removed in step C.
F)
Reinstall the transceiver top cover using the (6) Black
#6-32 x 1/4" screws PAN PHL that were removed in step B.
230 VAC
JUMPER
(factory
setting)
JUMPER