Harris Constellation, Руководство по эксплуатации системы

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Harris Corporation Constellation®
Receiver 4-11
TE
CHNI
CAL
SPE
C
IFICA
T
IO
NS
Receiver Overload*
* Typical values for nonprotected systems measured at the antenna port of the
Antenna Coupling Unit (ACU).
Dispersive Fade Margin (DFM)
*Typical values for nonprotected systems measured at the antenna port of the ACU.
Signal Acquisition Time
The system must re-establish customer traffic within 60 ms of a signal
interruption. Typical acquisition time is 60 ms for the majority of radios; the
exceptions are the 16T high gain radio with an acquisition time of 130 ms and
the 28 T high gain radio with an acquisition time of 100 ms.
For RF signal failures lasting greater than 1 minute, the system must re-
establish customer traffic within 250 ms of restoration of the RF signal.
Auto-DADE
The main and space-diversity receiver signal delays are automatically equalized
up to a diversity antenna spacing of 150 feet.
Band (GHz) 10
-6
BER (dBm) 10
-3
BER (dBm)
6 -17.0 -16.0
7/8 -17.5 -16.5
10/11 -18.5 -17.5
Table 4-4: DFM* with delay of 6.3 ns
BER 10
-3
(dB)
8 DS1 71.5
16 DS1 68.5
28 DS1 / DS3 66.5
OC-3 / 3xDS3 50.0
4xDS3 45.0