Transmission Speeds And Frequencies Of The Md2 Modem - Siemens SINAUT ST7 Operating Instructions Manual

Mounting and Installation
DTE
TIM32
TIM42
Cable
6NH7700-2AR60
LTOP2
overvoltage
LTOP2
protection
6NH9821-0BC12
4-wire
dedicated line
Fig. 2-15 Two MD2s as a 4-wire repeater combined with a DTE at the same spot (e.g. TIM32 or TIM42)
In most cases a repeater is placed at the location of a DTE (e.g. an ST7 station
which includes a TIM with an integrate MD2 modem). This is why these diagrams
also show how to connect a DTE (e.g. a TIM32 or TIM42) into the 2-wire or 4-wire
line at this repeater location in addition to showing the connection of two MD2s as
a repeater.
2.2.4

Transmission Speeds and Frequencies of the MD2 Modem

Table 2-20
Transmission
speed (bps)
1200
2400
9600 / 19200
6NH7811-0AA22
2-28
Repeater
configured
with 2 x MD2
Cable
6NH7700-2AR60
Settings for all LTOP2:
4-wire terminal point
Transmission speeds and frequencies of the MD2 modem
Mid-
frequency
(Hz)
1 700
2 850
27 200
Cable 6NH7701-1CB
MD2 MD2
RS232
Cable
6NH7700-2AR60
LTOP2 LTOP2
Frequency Lower keying
frequency
deviation Df
(Hz)
(Hz)
400 1 300
450
6 400 20 800
© Siemens AG 2002 All Rights Reserved
RS232
LTOP2
overvoltage
protection
6NH9821-0BC12
4-wire
dedicated line
Upper keying
frequency
(Hz)
2 100
2400 3 300
33 600
MD2 Modem (07/2002)