Arbiter Systems 1084A, Инструкции по эксплуатации

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Chapter 3
Connecting Inlet Power, Input and
Output Signals
3.1 Physical Configuration
The Model 1084A/B/C Satellite-Controlled Clock is designed for operation in an environment
having an ambient temperature range of 0
◦
to 50
◦
C (32
◦
to 122
◦
F). No external ventilation is
necessary. Operation is possible at temperatures of -20
◦
to +65
◦
C, although operation of the LCD
display will be degraded (Model 1084A is not affected). Normal operation will be restored once the
temperature has returned to the specified range.
Allow adequate clearance for rear-panel connections, especially in rack-mounting situations. Ad-
equate clearance reduces the possibility of damage to the connectors, cables, or the instrument.
Ideally, the clock should be located close enough to the antenna location so that the standard
15-meter (50-foot) cable can be used. The loss and delay characteristics of the cable are important
factors in the calibration and accuracy of the instrument (refer to Section 4.4.1); thus, the entire
cable length should be used, with any excess coiled up and placed out of the way.
Arbiter Systems offers standard accessories allowing the antenna to be mounted up to 240 m (800
ft) from the clock if longer cable runs are required. These are described in Table 4.2. If a longer
antenna cable than this is required, please contact the factory for advice.
Model 1084A/B/C Power Supplies
To provide for a wide range of inlet power sources, the 1084A/B/C can be ordered with any one of
three different power inlet modules. Each of the power inlet module connectors are illustrated here
and also in Chapter 2. Take time to examine the power inlet module connection on your clock to
verify that it is correct according to your order. Make sure to check the inlet voltage ranges before
connecting power to the clock.