Pendulum GPS-12, User Manual, Page: 13 / 62

Orientation and
Cooling
The frequency standard can be operated in any
position desired. Make sure the air flow
through the ventilation slots are not obstructed.
Leave 50 mm (2 in) of space around the
instrument.
CAUTION: Never cover the ventila-
tion slots at the right or left side. If
the slots are covered, the fre-
quency standard will overheat.
Fan Control
The speed-controlled fan is used for adjusting
the temperature inside the frequency standard
to compensate for variations in ambient tem-
perature.
Fold-down Support
For bench-top use, a fold-down support is
available for use underneath the frequency
standard. This support can also be used as a
handle to carry the instrument.
Rackmount
Adapter
If you have ordered a 19 inch rack mount kit for
your instrument, it has to be assembled after de-
livery of the instrument. The rack mount kit
consists of the following:
2 brackets, (short, left; long, right)
4 screws, M5 x 8
4 screws, M6 x 8
WARNING: When you remove the
cover you will expose live parts
and accessible terminals which
can cause death.
2-5 Orientation and Cooling
Preparation for Use
Figure 2-1 Air flow through the GPS-12X.
Figure 2-2 Fold-down support for comfort-
able bench-top use.
Figure 2-3 Dimensions for rackmounting
hardware.