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MD2
Transmission path
Type of modulation
Transmission speeds
Mode
•
•
Transmit level can be set to
Receive level
Terminating resistor can be adjusted
•
•
•
Ready to send
•
•
•
Lower / upper keying frequency
•
•
•
Asynchronous character format
Floating optical relay output
•
•
•
Surge withstand capability
U
1.2/50
between supply circuit and
•
•
Compatible with SINAUT modems
•
•
Certifications and approvals
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06
With 2-wire or 2 x 2-wire
With 4-wire
For 1200 and 2400 bps
For 9600 and 19,200 bps
For tapping point
At 1200 bps
At 2400 bps
At 9600 and 19,200 bps
At 1200 bps
At 2400 bps
At 9600 and 19,200 bps
Max. connected voltage
Max. permitted permanent current
Max. R
on
to DIN VDE 0804
FSK remote line circuits
Optical relay output
MD100
MD124
Introduction to the SINAUT ST7 system
2.4 The SINAUT ST7 modems
2-wire, 2 x 2-wire or 4-wire,
twisted pair, without loading coils or with few
coils
Frequency shift keying (FSK)
•
1200 bps
•
2400 bps
•
9600 bps (not for telephone company
•
leased lines)
19,200 bps (not for telephone company
•
leased lines)
Half duplex
•
Duplex or half duplex
•
0 dB
•
-6 dB
•
-9 dB (for telephone company leased lines)
•
-15 dB
•
0 to -43 dB
600 ohms
•
150 ohms
•
> 6 kilohms
•
After 7 ms
•
After 4 ms
•
After 0.5 ms
•
1300 Hz / 2100 Hz
•
2400 Hz / 3300 Hz
•
20,800 Hz / 33,600 Hz
•
10 or 11 bits
60 V AC/DC
•
400 mA
•
3 ohms
•
2.5 kV
•
2.5 kV
•
At 1200 bps
•
At 1200, 2400 and 19,200 bps
•
EU approval CE 0682 X
61
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