Installing and putting a SINAUT modem into operation
6.4 MD2 dedicated line modem
SINAUT ST7 Station control system - System Manual
246
System Manual, 05/2007, C79000-G8976-C178-06
Setting on DIL switch
Meaning
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Test mode: Test f baud *)
In this test mode, the lower and upper keying frequency is output
alternately at the clock rate of the transmission speed at the
transmitter output of the modem.
This corresponds to the binary character sequence 01010101...
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Test mode: Test f L *)
In this test mode, the lower keying frequency is output permanently
at the transmitter output of the modem.
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Test mode: Test f H *)
In this test mode, the upper keying frequency is output permanently
at the transmitter output of the modem.
*) For detailed explanations of the test modes, refer to Chapter 4 of the MD2 Modem Description 6NH7811-0AA21 that can be ordered
separately.
Setting on DIL switch
Meaning
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Character format: Message consisting of a series of asynchronous
characters, each 11-bit (1 start bit, 8 data bits, 1 parity bit, 1 stop bit).
This is the standard setting for sending SINAUT ST1 or SINAUT ST7
messages. In this case, message format FT 1.2, based on 11-bit
asynchronous characters is normally used for transmitting over
dedicated lines.
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Character format: Message consisting of a series of asynchronous
characters, each 10-bit (1 start bit, 8 data bits, 1 stop bit).
This setting is required for transmitting SINAUT ST7 messages over
dedicated lines with the optional FT 2 message format. This format is
based on 10-bit asynchronous characters.
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Control output switched with RTS
A floating optical relay is provided on pins 1 and 6 of the RJ-12
Western plug. This is active as long as the terminal device (TIM)
outputs the RTS signal (request to send) to the MD2 modem. This
control signal can be used to switch on a wireless device when the
MD2 modem is used in conjunction with a wireless system.
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Reserved
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Squelch OFF *)
This is a mandatory setting for the MD2 in conjunction with a TIM.
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Squelch ON *)
This setting is not permitted for the MD2 in conjunction with a TIM.
