Comtech EF Data CDM-550T - Manual (Page 64)

CDM-550T Satellite Modem Revision 3
Front Panel Operation MN/CDM550T.IOM
6.2.5.3 (INFO) RX (Receive information)
The information displayed here is as follows:
Top line:
Receive Frequency
Receive Data Rate
FEC Decoder type (VIT = Viterbi, SEQ = Sequential, VRS=Viterbi + Reed-
Solomon, SRS=Sequential + Reed Solomon, TUR = Turbo, UNC = uncoded)
Bottom line:
Demodulation type (Q = QPSK, O= OQPSK, B = BPSK)
Code Rate (shows blank in uncoded mode)
Descrambler state (D = Descrambler on, N = off)
Clocking Mode
Demod Sweep Acquisition range
RSI state (I = Receive Spectral Inversion on, N = off)
Rx: 70.0000 512.000 SEQ
B R3/4 D BUFF +/-23k I
6.2.5.4 (INFO) BUFF (Buffer information)
BUFFER: ENABLED (TX=RX)
SIZE: +/-4096 BITS
This displays if the buffer is enabled or disabled, shows the exact clocking mode (TX=RX, or
TX<> RX), and the buffer size. Pressing ENTER takes the user back to the previous menu.
6.2.5.5 (INFO) EDMAC (Framing and EDMAC information)
This screen shows the framing mode, EDMAC mode, and shows if the unit is an EDMAC
MASTER or SLAVE. Pressing ENTER takes the user back to the previous menu.
FRAMING: ON
EDMAC MODE: ON (SLAVE)
6–28