Comtech EF Data OM20 - Manual (Page 205)

MN-OM20– Revision 5 G–1
Appendix G. Strap Codes
G.1 Strap Codes
The Strap Code is a quick set key that sets many of the modem parameters. For quick setup of
the modem, 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 Menu, depress ‘
↓’, then move ‘→’ to the ‘Strap
Code’ Submenu and enter #16. The modem 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. Strap Codes
Dis = Disable
S
tr
a
p
C
o
d
e
(D
eci
mal
)
D
at
a R
at
e (
K
b
p
s)
O
ver
h
ead
Co
d
e
Ra
te
T
y
p
e
F
ra
m
in
g
T
y
p
e
S
cr
amb
ler
T
yp
e
D
ro
p
a
n
d
I
n
s
e
rt
R
eed
-S
o
lo
m
o
n
M
o
d
u
la
ti
o
n
M
o
d
e
1 64 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
2 128 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
3 256 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
5 384 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
6 512 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
9 768 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
4 1536 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
10 1920 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS
8 2048 16/15 1/2 VIT IBS IBS Dis Dis QPSK IBS