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1256E User Manual
Racal Instruments
©
2002
Getting Started 2-1
Chapter 2
GETTING STARTED
Mounting Options
You may use the 1256 Switching System on a table or mount it in
a standard NEMA 19” rack. See
Appendix B, RACK MOUNTING
the 1256
for instructions on installing the rack mount kit (Option
60) and placing the 1256 in a rack.
Main AC Power
The 1256 Switching System requires a power input of 90VAC to
250VAC, 43Hz to 63Hz. The 1256 requires no adjustments,
settings, or changes in fuse capacity to accommodate variations of
voltage and frequency within these ranges. Simply connect the
1256 AC power inlet to the power source.
CAUTION
Before connecting the unit to a power source, make
sure that the installed fuse has the capacity marked
on the rear panel of the 1256. For instructions on
changing the fuse, refer to Figure 2-1, Changing Fuse
for Main AC Power.
Figure 2-1, Changing Fuse for Main AC Power
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
CAUTION
Fuse Holder
Fuse Cover
Fuse
The fuse holder has
two slots for a fuse:
one on the top and
one on the bottom. Put
the fuse in the bottom
slot of the fuse holder.
Leave the top slot
empty.