Dmd20 Strap Codes - Radyne DMD20 Installation And Operation Manual

DMD20 Universal Satellite Modem

4.4 DMD20 Strap Codes

The Strap Code is a quick set key that sets many of the modem parameters. For quick setup of
the DMD20, 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 DMD20 will be automatically configured to the parameters shown
below in the highlighted row 'Strap Code 16'.
Use the Strap Code Guide (Table 4-4) for available strap codes.
Strap Data
Code Rate
Overhead
(DEC) (Kbps)
1 64 16/15
2 128 16/15
3 256 16/15
5 384 16/15
6 512 16/15
9 768 16/15
4 1536 16/15
10 1920 16/15
8 2048 16/15
12 2048 1*
16 1544 96K
32 2048 96K
64 6312 96K
IDR 8448 96K
128
24 56 1
33 56 1
34 64 1
36 64 1
40 128 1
TM103 – Rev. 1.1
Table 4-4. DMD20 Strap Codes
Code
Framing Scrambler
Rate
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
1/2 IBS IBS
3/4 IDR V.35
(IESS)
3/4 IDR V.35
(IESS)
3/4 IDR V.35
(IESS)
3/4 IDR V.35
(IESS)
1/2 NONE V.35
(IESS)
NONE
3/4 V.35
(IESS)
NONE
1/2 V.35
(IESS)
NONE
3/4 V.35
(IESS)
NONE
1/2 V.35
(IESS)
Drop and Reed-
Insert Solomon
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
DISABLE DISABLE
User Interfaces
Mod. Mode
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IBS
QPSK IDR
QPSK IDR
QPSK IDR
QPSK IDR
QPSK CNT
QPSK CNT
QPSK CNT
QPSK CNT
QPSK CNT
4-27