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Page 27
Chapter 5
Specifications
his chapter lists the specifications for the modem.
General
Operation:
2-wire half-duplex or 4-wire full-duplex
private line operation.
Data rate:
0-1200 bps asynchronous on worst case
line. 0-1800 asynchronous on C2
conditioned line
Modulation:
Phase coherent. Frequency Shift Keyed
(FSK)
Carrier frequencies:
Mark 1200 Hz
±
1%
Space 2200 Hz
±
1%
Line impedance:
600 ohms
±
10% transformer coupled and
transient protected.
Transmitter output
level:
Selectable from 0 to –14 dBm, in 2 dB
steps.
RTS-CTS delay:
8, 33, 59, or 219 ms
Carrier Detect delay:
6 or 23 ms OFF-to-ON, 6 On-to-OFF
Digital interface:
EIA RS-232-C and CCITT V.24.
Package:
Standalone, UL approved.
Turnaround squelch:
8 ms or 159 ms
Anti-streaming:
Option to turn transmitter OFF after
selected time, even if RTS is ON
T