Schmid Watson Przewodnik Instalacji Pobierz pdf (Strona 81)

LTU/NTU SZ-DOC-W5-1.pd

Operating Manual

ersion: 1.5

Revision: 2002-09-10 72

7.4.2.2 BITRATE Command

Set bit rate of nx64 Port : n = [0..36 for Dual LTU / 0..72 for NTU]

To switch off the nx64 Port, set bit rate to 0.

7.4.2.3 CLOCKMODE Command

Select clock source: 0=nx64 Port, 1=E1 Port 2, 2=Internal, 3=Remote.

7.4.2.4 CLOCKDIR Command

Select clock direction: 0=codirectional, 1=contradirectional.

This command is only available in V.35 and V.36 modes.

7.4.2.5 V54LOOPS Command

Select whether it is possible to switch loop 1 and 2 using the control circuits 140 (RL) and 141

(LL).

This command is only available in V.35 and V.36 modes.

7.4.2.6 CLOCK POLARITY Command

The CLOCK POL commands selects the sampling instant for the incoming data stream on circuit

T of the X.21 user interface.

In default configuration "normal" circuit T is sampled on rising edge of clock S.

The data transitions on T and R shall occur at the OFF to ON transition of S (according X.24

standard). The ON to OFF transition of circuit S nominally indicates the centre of each signal

element on circuit R in this case.

When Clock Polarity is set to "inverted", circuit T is sampled with the falling slope of S. The

incoming data at X.21 circuit T will be sampled at the OFF to ON transition of S.

This command is only available in X.21 mode.

7.4.2.7 BYTETIMING Command

Select if circuit B for byte timing is used in X.21 mode. Note that to use the byte timing you need

the appropriate cable and cannot use the co-directional transmit clock.

This command is only available in X.21 mode.

7.4.2.8 HANDSHAKE Command

Set RTS/CTS (C/I ) handshake mode.

A.) User interface type V.35/V.36

HANDSHAKE ON:

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 128 129

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Schmid Watson Przewodnik Instalacji Strona 81