DATA CONNECT ENTERPRISE
26
User’s Manual - DSP19.2 Fast Poll Modem
Appendix B
Specifications
General Specifications
Data rate:
19200, 9600, 2400, 0-1800 (Bell 202T), or 1-1200 bps (V.23) asynchronous
Data format:
8 or 9 data bits with 1 or more stop bits, or 7 data bit with parity bit
DTE interface:
EIA RS-232/V.24, or RS-485 compatible
Line conditions:
TELCO voice band 4- or 2-wire leased line, conditioned or unconditioned
Private metallic circuits up to 9.5 miles at 9600 bps (24 AWG) without cable
equalizer. Up to 15.0 miles (24 AWG) with TX and RX cable equalizer. Up
to 25 miles for FSK modes.
Operating modes:
2-wire half-duplex or 4-wire full-duplex
Modulation:
QAM High-speed fast poll mode
FSK, Bell 202T or V.23 compatible
•
Mark = 1200 Hz (1300 Hz, V.23)
•
Space = 2200 Hz (2100 Hz, V.23)
•
Soft Carrier = 900 Hz (Bell 202T only)
Equalizer
Automatic, adaptive
RTS-CTS Delay:
23 ms. (fast poll at 2400 bps and above)
8 or 33 ms (Bell 202T)
33 ms (V.23)
Receiver dynamic range:
0 to –30 dBm or –10 to –43 dBm
Operating temperature:
-40
°
C to +85
°
C
Power supply:
Wide range switching power supply:
•
DSP19.2 (AC version): 90 to 265 Volts AC, 50/60 Hz, single phase
or 90 to 400 VDC
•
DSP19.2-LV (DC version):10 to 60 Volts DC
Surge protection:
Leased line, up to 15KV
Carrier control:
Constant or switched, DIP switch selectable
Carrier loss recovery:
Train on data automatically
Throughput delay:
Less than 10 milliseconds for fast polling
Auto RTS:
Support DTE without hardware RTS
Anti-streaming:
27-second timer to prevent transmitter lock-up network
