Radyne OM20 Specifications download pdf (Page 64)

OM20 Universal Outdoor Modem OM20 Theory of Operation

MN-OM20– Revision 5 4–26

i. ES BAUD RATE {150 - 115200}

ii. This allows the user to select the baud rate of the ASYNC port (J17) in SCC

Mode.

7. Under TX ASYNC MODE Menu, set the desired ES BITS/CHAR:

i. ES BITS/CHAR {7,8}

ii. This allows the user to choose between 7 or 8 bits of data.

8. Repeat Steps 4 through 7 under the RX ASYNC MODE (menu)

9. The physical connection to the overhead channel will be the DB-9 Female Port labeled ASYNC

(J17).

SCC Overhead Chart Examples

(Viterbi 3/4 w/V.35 Scrambler)

Modem Data Rate

Kbps

SCC Control

Channel Rate

In-Band Overhead

Rate Setting

Symbol Rate

9.6 1/1 300 6800

9.6 1/2 300 6700

9.6 1/3 300 6667

9.6 1/4 300 6650

9.6 1/5 300 6641

9.6 1/6 300 6634

9.6 1/7 300 6629

9.6 1/1 9600 19200

9.6 1/2 9600 17067

9.6 1/3 9600 15543

9.6 1/4 9600 14400

9.6 1/5 9600 14400

9.6 1/6 9600 14400

9.6 1/7 9600 14400

512 1/1 9600 354165

512 1/2 9600 350948

512 1/3 9600 349867

512 1/4 9600 349346

512 1/5 9600 349201

512 1/6 9600 348802

512 1/7 9600 348658

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 219 220

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Radyne OM20 Specifications Page 64