Appendix G. DMD1050 Strap
Codes
G.1 Introduction
The Strap Code is a quick set key that sets many of the modem parameters. For quick setup of
the DMD1050, Strap Codes are very helpful. When a Strap Code is entered, the modem is
automatically configured for the code’s corresponding data rate, overhead, code rate, framing,
scrambler type and modulation. An example of how to set a strap code follows:
Example: At the Front Panel <Modulator> Menu, depress ‘,’, then move ‘-’ to the ‘Strap
Code’ Submenu and enter #16. The DMD1050 will be automatically configured to the
parameters shown below in the highlighted row ‘Strap Code 16’.
Use the Strap Code Guide (Table G-1) for available strap codes.
Table G-1. DMD1050 Strap Codes
Dis = Disable
Strap Code
(Decimal)
Data Rate (Kbps)
Overhead
Code Rate
Type
Framing Type
Scrambler Type
Reed-Solomon
Modulation
Mode
12 2048 16-15 1/2 VIT IBS IBS Dis QPSK
CNT
24 56 1 1/2 VIT NONE V.35 (IESS) Dis QPSK
CNT
33 56 1 3/4 VIT
NONE
V.35 (IESS) Dis QPSK CNT
34 64 1 1/2 VIT
NONE
V.35 (IESS) Dis QPSK CNT
36 64 1 3/4 VIT
NONE
V.35 (IESS) Dis QPSK CNT
40 128 1 1/2 VIT
NONE
V.35 (IESS) Dis QPSK CNT
48 128 1 3/4 VIT
NONE
V.35 (IESS) Dis QPSK CNT
65 256 1 1/2 VIT
NONE
V.35 (IESS) Dis QPSK CNT
MN-DMD1050 G–1
Revision 9
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