Connectors And Configuration Switches Accessible From Below - Siemens SIMATIC NET SINAUT ST7 System Manual

Station control system
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Setting on DIL switch
*) For detailed explanations of the squelch function and "Reset Test receive", refer to Chapter 4 of the MD2 Modem Description 6NH7811-
0AA21 that can be ordered separately.
6.4.3

Connectors and configuration switches accessible from below

The following figure shows the MD2 modem from below with the X3 RJ-12 Western jack, the
DIL switch for activating the RS-232 or RS-485 port and the DIL switch for activating the
WAN terminating resistors.
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06
Installing and putting a SINAUT modem into operation
Meaning
Reset "Test receive" off / normal transmit level *)
Depending on the selected mode, this switch has two meanings:
In the "Test receive" mode, this switch setting has no function.
In all other modes, the transmit level for operation of the modem on
normal dedicated lines is set depending on switch S1 (5-pin DIL
switch) to 0 dB (S1 = ON) or –6 dB (S1 = OFF).
Reset "Test receive" on / reduced transmit level *)
Depending on the selected mode, this switch has two meanings:
In the "Test receive" mode, the test operation can be reset.
In all other modes, the transmit level for operation of the modem on
telephone company leased lines is reduced. Depending on switch S1
(5-pin DIL switch), the transmitter level is then set to
–9 dB (S1 = ON) or to –15 dB (S1 = OFF).
6.4 MD2 dedicated line modem
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