Config) All; Config) Tx (Transmit) - Comtech EF Data CDM-570L Installation And Operation Manual

CDM-570L Satellite Modem with IP Module

6.6 (CONFIG) ALL

The user is presented, in a sequential fashion, with every configuration option that is part
of the individual configuration menus.

6.7 CONFIG) TX (Transmit)

Tx:FEC Mod Code Data Frq
On/Off Pwr Scram Clk Inv
Select FEC, Mod, Code, Data, Frq, On/Off, Pwr, Scram, Clk or Inv using the ◄ ►
arrow keys, then press ENTER. The user will then be taken to a further sub-menu. Each
of these choices is described briefly in the table below:
FEC
Mod
Code
Data
Frq
On/Off This sub-menu permits user to control the output state of the transmit carrier.
Pwr
Scram
Clk
Inv
(Forward Error Correction) This sub-menu permits the user to select the
method of FEC used for transmission (Viterbi, TPC, etc). FEC type takes the
highest configuration priority.
(Modulation) This sub-menu permits the user to select the modulation type
used for transmission (BPSK, QPSK, 8-PSK, etc.). The choice of modulation
will depend on the FEC type chosen.
(FEC Code Rate) This sub-menu permits the user to select the FEC Code
Rate used for transmission (Rate 1/2, Rate 3/4, etc). The choice of Code Rate
will depend on both the FEC type and Modulation selected.
(Data Rate) This sub-menu permits the user to select the transmit data rate, in steps
of 1 bps. The choice of data rate will depend on the FEC type, Modulation, and
Code Rate selected.
(Frequency) This sub-menu permits the user to select the transmit frequency,
from 950 MHz to 1950 MHz, in steps of 100Hz.
(Output Power level) This sub-menu permits the user to control the output
level of transmit carrier, either manually, or using the AUPC (Automatic
Uplink Power Control) feature.
(Scrambler) This sub-menu permits the user to select whether or not data
scrambling is used.
(Clock Source) This sub-menu permits the user to select the clock source for
transmission. This can be from the CDM-570L's high stability internal
source, from an external source, or from the distant-end of the satellite link
(loop timed).
(Inversion) This sub-menu permits the user to invert the sense of the
transmitted spectrum, or to invert the sense of the transmitted baseband data.
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