Interface: Conforms to EIA
RS-232 and CCITT V.24 specifications. Pin 4 connected to Pin 5; Pins
6, 8, and 20 connected together. Pins 2 and 3 Transmit/Receive Data,
switch selectable. Pin 7 Signal Ground
Connectors: RS232, 25 pin
male or female (as ordered); 4-wire line, screw terminals and
modular phone jack, RJ11. Power is 3.5mm plug
Data Rate: 0-19.2 KBPS
Transmission: Asynchronous;
full duplex-two twisted pairs; simplex-one twisted pair. Current
loop 12 ma via optical couplers. Conforms with Bell System
Publication 43401
Operating Distance: The
following table gives maximum distance as a function of data rate.
Data Rate
(KBPS) |
19.2 |
9.6 |
4.8 |
2.4 |
1.2 |
Distance
(Miles) |
1 |
2 |
3 |
5 |
10 |
Surge Protection: Built-in
on 4 wire line
MTBF: 663,000 Hours (76
Years)
Power: Model 72A 115V, 60Hz,
0.1A; 220V, 50Hz Optional
Size: 3.5"L (89mm) x 2.2"W
(56mm) x 1"H (25mm) (plus wall mounted transformer)
Environment: 0° to 50° C, 0%
to 95% RH
