Comtech EF Data OM20 - Manual (Page 107)

OM20 Universal Outdoor Modem Web Browser/Remote Protocol
MN-OM20– Revision 5 6–33
Data Rate (bps): {Refer to Technical Specs for Data Rates}
Allows the user to set the Data Rate in bps steps via the Front
Panel Arrows or Keypad.
Symbol Rate (sps): Allows the user to view the Symbol Rate.
INNER FEC Viterbi {1/2, 3/4, 7/8, None}
Optional FEC Rates:
Sequential {1/2, 3/4, 7/8}
Trellis 8PSK {2/3}
Turbo
≤ 5 Mbps
{.793, .495}
Turbo
≤ 20Mbps
{1/2, 3/4, 7/8}
Comstream Seq {3/4}
DVB VIT {1/2, 2/3, 3/4, 5/6, 7/8}
DVB Trellis {2/3, 5/6, 8/9}
Allows the user to select the Rx Code Rate and Type.
TPC Interleaver {DISABLED, ENABLED}
Allows the user to disable or enable TPC Interleaver. Valid only
for Radyne turbo codes TPC.495 and TPC.793.
Differential Encoding {ENABLED, DISABLE}
Allows the user to enable or disable the Differential Decoder.
Having the decoder enabled ensures proper phase lock. May not
be adjustable in some modes.
Scrambler Selection {NONE, V.35-IESS, V.35 CITT, V.35 EF, IBS w/Optional
Framing and optional Reed-Solomon, Reed-Solomon
Scrambler w/Optional Framing, CCITT, V.35FC, OM-73,
V.35EF_RS, TPC, DVB, EDMAC}
Allows the user to select the descrambler type.
Scrambler Control {ON, OFF}
Allows the user to enable or disable the descrambler operation.
Satellite Framing {1/15 (IBS), 1/15 (Async), 96 Kbps (IDR), EDMAC,
EFAUPC, SCC, None}
Used with IDR, IBS, or Asynchronous Interface Only.
Allows the user to select the Framing Type.
Terrestrial Framing {NONE, 188, 204} DVB only
Allows the user to select the Receive Terrestrial Framing.
Data Polarity {INV. TERR & BASE, INV. BASEBAND, INV.TERR
DATA, NONE}
Allows the user to invert the Rx Data polarity.
Symbol Pair: Symbol Pair: {NONE, SWAPPED}
Allows the user to swap the I & Q Channels.