05-3946A01, Rev. C
TransNET OEM Integration Guide
67
6
IN
TTL, 3 Vdc
Sleep Mode Input—
A ground on this pin turns off
most circuits in a remote radio. This allows for greatly
reduced power consumption, yet preserves the radio’s
ability to be brought quickly back on line. See
the Radio’s Sleep Mode (Remote Units Only)” on
Page 26
for details.
7
OUT
TTL, 3 Vdc
Data Carrier Detect (DCD)—
A low indicates hop-
ping synchronization has been achieved.
8
IN
TTL, 3 Vdc
Power Supply Shutdown Control—
A ground on this
pin causes the OEM module’s power supply to shut
down.
9
—
—
DC Input (Regulated 3.3 Vdc)—
Supply Source must
be capable of furnishing at least 7.5 watts.
10
IN
TTL, 3 Vdc
Transmitted Data (TXD)—
Accepts payload data
from the connected device.
11
IN
—
DC Input (6–18 Vdc)—
Supply Source must be capa-
ble of furnishing at least 7.5 watts.
12
IN
TTL, 3 Vdc
Request to Send (RTS)—
A high causes CTS to fol-
low after the programmed CTS delay time has elapsed
(DCE).
13
—
—
Reserved—Do not connect.
14
OUT
TTL, 3 Vdc
Received Data (RXD)—
Supplies received payload
data to the connected device.
15
IN
—
Ground—
Connects to ground (negative supply poten-
tial).
16
OUT
TTL, 3 Vdc
Clear to Send (CTS)—
Goes high after the pro-
grammed CTS delay time has elapsed (DCE), or keys
an attached radio when RF data arrives (CTS KEY).
Table 28. Transceiver Connector J3 Pinouts
(Payload data TTL; Diagnostic data RS-232)
Pin No.
Input/
Output
Signal
Type
Name/Description
1
IN
—
Ground—
Connects to ground (negative supply poten-
tial).
2
OUT
RS-232
Diagnostic TXD—
Supplies received diagnostic/ad-
ministrative data to the connected device.
3
OUT
TTL, 3 Vdc
Alarm condition—
A low indicates normal operation.
A high indicates an alarm. (See ASENSE [HI/LO]
command for more information.)
4
IN
RS-232
Diagnostic RXD—
Accepts diagnostic/administrative
data from the connected device.
Table 27. Transceiver Connector J3 Pinouts
Payload data TTL; Diagnostic data TTL (Continued)