Service Manual

GSM-205-323
Specifications
31st Oct 01
Tech. 1–10
Technical Description: Horizon macro indoor
CONTROLLED INTRODUCTION
68P02902W07-B
Power
requirements
Cabinet power supply requirements
Table 1-4 lists the power supply requirements for the different power supply
options.
Table 1-4 Main indoor cabinet power supply requirements
Nominal Voltage Voltage supply
range
Current supply maximum
+27 V dc (negative earth) +20 to +30 V dc 64 A (at nominal voltage)
–48 V dc (positive earth) –39 to –72 V dc 36 A (at nominal voltage)
120/240 V ac (50 – 60 Hz) 88 to 264 7.5 A (at nominal voltage)
NOTE Voltage transients must be less than 35 V peak amplitude
(never below 0 V). Ripple and noise must be less than 200
mV p-p (30 mV rms) over 10 Hz to 14 MHz. Voltage
application stabilization must be within the specified range
in less than 1 second.
Power consumption
Table 1-5 lists typical and maximum power consumption values
Table 1-5 Power consumption of full cabinet, including digital redundancy
Typical measured consumption Maximum power consumption
1400 watts 1700 watts
NOTE Maximum power consumption figures are theoretical
values derived under extreme conditions and are affected
by variables such as temperature, component tolerances,
transmission power and supply voltage.
Although these figures must be considered when planning
site power requirements, typical measured consumption
values will be lower.