Constellation™ November 2003
3-4 Installation and Commissioning
Circuit Breakers
The values in Table 3-3 are for the Constellation
terminal radio only.
Grounding Recommendations
Grounding in accordance with the R56 installation standard is necessary for
proper operation of the equipment as well as protection of the personnel and
equipment.
• Connect the ground between the radio rack and halo, or ground window
of the site.
• Do not connect the ground through any other radio or rack.
• Do not daisy chain the grounds. A surge through a daisy chain ground
will go through all the radios.
• The return bus bar should be grounded using 6-AWG wire as a
minimum.
Some operators require the same gauge wire for the return buss bar and the
battery cables. This may help avoid DC power surges when the on-site
generator switches between on or off.
Table 3-3: Recommended circuit breaker sizes for
Constellation radio terminal only
6, 7/8 GHz 10/11 GHz
Configuration 24 V 48 V 24 V 48 V
Fully protected 25 A 15 A 30 A 15 A
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