Service Manual

GSM-205-323
Specifications
31st Oct 01
Technical Description: Horizon macro indoor
68P02902W07-B
CONTROLLED INTRODUCTION
Tech. 1–11
Maximum thermal dissipation
Thermal dissipation has to remove the energy of maximum power consumption,
less RF power output of the six transceivers.
Maximum power consumption: 1700 W.
Six CTUs at full power at DCF Tx blocks:
1800 MHz (6 x 16 = 96) approx. 100 W.
900 MHz (6 x 20 = 120) 120 W.
Maximum thermal dissipation 1800 MHz: 1700 – 100 = 1600 W.
Maximum thermal dissipation 900 MHz: 1700 – 120 = 1580 W.
NOTE
Thermal dissipation figures are not currently available for
when 850 MHz or 1900 MHz CTUs are used.
RF power
output
Table 1-6 lists the RF power output of the CTU types.
Table 1-6 CTU RF power output at Tx connector
GSM850 and EGSM900 DCS1800 and PCS1900
60 W (47.8 dBm) +/– 1.0 dB 50 W (47.0 dBm) +/–1.0 dB
Table 1-7 lists the expected power output from the various Tx blocks for both
types of CTU.
Table 1-7 RF power output at cabinet after Tx blocks
Tx block GSM850 EGSM900 DCS1800 PCS1900
TDF 40 W
(46.0 dBm)
32 W
(45.1 dBm)
DCF 20 W
(43.0 dBm)
16 W
(42.1 dBm)
DDF 8.5 W
(39.3 dBm)
7 W
(38.5 dBm)
CCB* n/a 20 W
(43.0 dBm)
16 W
(42.1 dBm)
n/a
* For a six-channel configuration with minimum cavity separation of 800 kHz.
NOTE CCBs are not currently available for the GSM850 or
PCS1900 variants.