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User Interfaces DMD15/DMD15L IBS/IDR Satellite Modem
4-12 TM051 – Rev. 5.8
Tx D&I (menu):
Drop Mode: {Enable, Disable}
Allows the user to enable or disable the following:
T1-D4, T1-ESF, PCM-30, PCM-30C, PCM-31,
PCM-31C, SLC-96, T1-D4-S, T1-ESF-S.
Map Copy: {Rx Edit, Tx Edit, Rx Acti, Tx Acti, ROM 1…ROM 8,
User 1…User 8}
Allows user to copy Drop and Insert maps. If the user
attempts an invalid copy, the error prompt “BAD
DESTINATION” will be displayed and the copy will not be
allowed. The Tx Active map is the drop map currently
being used by the modem. For a more detailed
description of this function, see Section 4.6.4.
SATCh TS: Allows the user to edit the Tx Edit Map to specify the
terrestrial slots that will be dropped into which satellite
channels. The Satellite Channels are fixed and the
number of channels are determined by the data rate.
The Terrestrial Timeslots available are determined by the
Drop Mode. When the user has finished editing the Tx
Edit map, it must be copied to the Tx Active map before
it can be used by the modem.
Time Mark: {Enable, Disable}
Allows the user to enable or disable the “Time Mark
Transfer” (TMT) Transmit Request External Input to
initialize the state machine that detects the proper states
of I and Q and inserts the TMT Pattern into the transmit
symbol stream. This feature is only available in BPSK,
QPSK, and OQPSK Modulations and requires specific
hardware and configuration at the factory.
TMT Length: {4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
Allows the user to set the length of the pattern marker.
This feature is only available in BPSK, QPSK, and
OQPSK Modulations and requires specific hardware and
configuration at the factory.
Rx Setup (menu):
Rx Ckt ID: Provides entry of Rx Circuit Identifier. Circuits can be
given up to an 11 Character alphanumeric Identity such
as DLINK1
Rx Type: {G.703 (Balanced/Unbalanced), V.35, RS-232, RS-
422}
Allows the user to select the Receive Type.
Buff Size: {0-32 msecs}
Allows the user to set the Doppler Buffer Size in msec.
Buff Clk: {SCTE (External), SCT (Internal), Rx Sat, EXTCLK}