Pin Descriptions-Rs/Eia-232 Mode - GE TransNET 900 Reference Manual

Pin Descriptions—RS/EIA-232 Mode
Table 27 lists the
operate in RS/EIA-232 mode.
NOTE: The radio is hard-wired as a DCE in the EIA-232 mode.
Table 27. DATA connector pin descriptions—RS/EIA-232
Pin Input/
Number Output
1 OUT
2 OUT
3 IN
4 IN
5 IN
6 OUT
7 IN
8 OUT
9 --
70 MDS TransNET Ref. Manual
DATA
connector pin functions for radios configured to
Pin Description
DCD (Data Carrier Detect)
A "high" indicates hopping synchronization.
RXD (Received Data)
Supplies received data to the connected device.
TXD (Transmitted Data)
Accepts TX data from the connected device.
Sleep—A ground on this pin turns off most circuits in a Re-
mote radio, including transmit, receive, modem, and diag-
nostic functions. This allows for greatly reduced power
consumption, yet preserves the radio's ability to be quickly
brought on line. See
mote Units Only)" on Page 59
Signal Ground—
Connects to ground (negative supply potential) on the ra-
dio's PC board and chassis.
Alarm Output—An RS-232 high/space (+5.0 Vdc) on this pin
indicates an alarm condition. An RS-232 low/mark
(–5.0 Vdc) indicates normal operation. This pin may be used
as an alarm output. (See ASENSE [HI/LO]
for further information.)
29
RTS (Request-to-Send)
CTS (Clear-to-Send)—Goes "high" after the programmed
CTS delay time has elapsed (DCE), or keys an attached ra-
dio when RF data arrives (CTS KEY).
Reserved for Special Uses (Do not connect)
"Using the Radio's Sleep Mode (Re-
for details.
MDS 05-2708A01, Rev. F
Details, Page