ComStream CM601, Инструкция по установке и эксплуатации

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Installation 4-3
The uplink and downlink frequencies are the operational frequencies that
must be used, and they must be preauthorized by the space-segment
vendor or satellite operator.
The initial transmit power is the level authorized for satellite loopbacks
and end-to-end testing and may be different from the final power setting
level.
The minimum required E
b
/N
0
at the remote station reflects the minimum
value for acceptable system performance as calculated by the system link
budget. This value must be met during commissioning, or the installation
cannot be regarded as successful. The final E
b
/N
0
value should be
recorded and used as a baseline in determining system performance.
Other information includes the various modem operating parameters that
determine uplink power.
Configuration parameters – this section details the modem configuration for a
specific site. These parameters must be known and set to their proper values
before the bench-top test is performed.
Installation Data Sheet
Before beginning the physical setup and installation of the earth station
components, fill out the following questionnaire. It will save time and provide
ease of installation by identifying decisions about configuration that should be
made beforehand.
Installation Data Sheet
General Information
Date ___________________________Installer _________________________________________________________
Site location ________________________________________________________________________________
Customer Name _________________________________________ P.O.C. and phone # _________________________________
Satellite
Name _________________________________________Longitude (degrees) ________________________________
Operating Parameters Transmit frequency (TxIF) ________________ kHz Tx power (TP) ________________ dBm
Receive frequency (RxIF) ________________ kHz Min. required E
b
/N
0
(EB) ____________ dB
Final E
b
/N
0
(EB) ________________ dB
Configuration Parameters Transmit Receive
Data rate (bps) PTD =_______ PRD =_______
Modulation type (BPSK/QPSK) TM =_______ (0,1) RM =_______ (0,1)
FEC type (off, S 1/2, S 3/4, V 1/2, V 3/4, V 7/8) TC =______ (0,1,2,3,4,5) RC =_______ (0,1,2,3,4,5)
Differential encoding (off, standard) DM =_______ (0,1) DD =_______ (0,1)
Scrambling (off, ComStream, IDR) SM =_______ (0,1,2) SD =_______ (0,1,2)
Acquisition offset (Hz) AO =_______
Acquisition range (Hz) AR =_______
Modulator bit timing (external, internal, loop) MB =_______ (1,2,3)
Modulator latching clock (TT, ST) ML =_______ (0,1)