Comtech EF Data DMDVR20 LBST Rev 1.1 - Manual (Page 104)

DMDVR20 LBST Satellite Modem Appendix D
TM136 – Rev. 1.1 D -1
Strap Codes
D
D.0 Strap Codes for Modulator Only
The Strap Code is a quick set key that sets many of the modulator parameters. When a Strap
Code is entered, the modulator 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 Menu, depress ‘
↓’, then move ‘→’ to the ‘Strap Code’
Submenu and enter #16. The unit will be automatically configured to the parameters shown
below in the highlighted row ‘Strap Code 16’.
Use the Strap Code Guide (Table D-1) for available strap codes.
Table D-1. Strap Codes
Dis = Disable
Stra
p Code
(Decim
al)
Data Rate (Kbps)
Overh
ead
Code
Ra
te
Ty
pe
Fra
m
ing
Ty
pe
Scra
mbler Type
Re
ed
-Solomon
Modu
la
tion
Mode
1 64 16/15 1/2 VIT IBS IBS Dis QPSK IBS
2 128 16/15 1/2 VIT IBS IBS Dis QPSK IBS
3 256 16/15 1/2 VIT IBS IBS Dis QPSK IBS
5 384 16/15 1/2 VIT IBS IBS Dis QPSK IBS
6 512 16/15 1/2 VIT IBS IBS Dis QPSK IBS
9 768 16/15 1/2 VIT IBS IBS Dis QPSK IBS
4 1536 16/15 1/2 VIT IBS IBS Dis QPSK IBS
10 1920 16/15 1/2 VIT IBS IBS Dis QPSK IBS
8 2048 16/15 1/2 VIT IBS IBS Dis QPSK IBS
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