Comtech-ef-data RCF6001 Manual do Utilizador descarregar pdf (Página 27)

RCF6001 Satellite Terminal Maintenance

TM082 - Rev. 1.0 Page 4-7

channel. The basic frame structure used by the multiplexer is that specified in the IESS-309 standard,

Page 60, Figure 10, resulting in a 16/15 aggregate to through data ratio.

KBPS BAUD

9.6 300

19.2 600

32 600

64 1200

128 2400

192 4800

256 4800

320 9600

384 9600

448 9600

512 9600

576 9600

640 19200

704 19200

768 19200

832 19200

896 19200

960 19200

1024 19200

1088 19200

1152 19200

1216 19200

1280 19200

1344 19200

1408 19200

1472 19200

1536 19200

1600 19200

1664 19200

1728 19200

1792 19200

1856 19200

1920 19200

1984 19200

2048 19200

Two software controlled modes are designed into the card to best utilize the available bits; “Standard

. The characteristics of the channel interface is also determined by the standard or

Async mode.

The Async Channel can be set under software-control to either RS-232 or RS-485 mode. The pin

assignments for both modes are shown in Table 1. The “RS-485” setting controls the output into tri-state

when the modem is not transmitting data, allowing multiple modem outputs to be connected together.

3.8 Standard IBS Mode

In the first or "Normal" mode, all bit assignments are per the IBS standard. The bits of Overhead

Housekeeping byte 32 are implemented as shown below:

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 77 78

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