D20/D200 Technical Overview
GE Grid Solutions
68
PRPI-019-3.00-10
GE Information
Modem
Specifications
Westermo TD-34
•
Designed for extreme industrial environments
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2-wire half duplex, 4-wire full duplex
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Data rates up to 33.6 kbps
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-40 to +70
o
C, 0 to 95% non-condensing
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35 mm DIN-rail mounting
2.6.1 WESDAC 202/V.23 Modem Specifications
Table 23 WESDAC 202/V.23 Modem Specifications
Item
Description
Mounting
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Chassis (520-0120)
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Rack (520-0090)
Standards
Jumper configurable for:
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Bell 103 and 202
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CCITT V.23
Circuits
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2 wire half-duplex
•
4 wire half- or full-duplex
Equipment Interface
RS-232/CCITT V.24 data interface
Data Rate
300 and 1200 bps
Transmit and Receive
Frequencies
•
Bell 202: Mark 1200 Hz, Space 2200 Hz
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CCITT V.23: Mark 1300 Hz, Space 2100 Hz
Transmit Output Level
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-45 dBm to +2.0 dBm
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Continuous or RTS-keyed
Receive Sensitivity
•
Jumper configurable for steps -42, -36, -30, -24, -18, or -12 dBm
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5 dB typical carrier dropout hysteresis
Soft Carrier Turn-Off
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WESDAC 202/V.23 (vertical): Fixed at 8 ms
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WESDAC 202/V.23 (rack): 24 ms, optional 7910 chip
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Soft carrier frequency 900 Hz
DCD on Detection of
Carrier
3 to 7 ms maximum
DCD on Loss of Carrier
3.4 to 11.3 ms maximum
CTS Delay after RTS
•
8 ms
•
RTS - CTS delay set on software
Line Impedance
600 ohms
LED Indicators
Tx, Rx, DCD, RTS (all RED)
