Datron TW7201I, Manual

Page: 21 / 106

2: Installation
TW7201I-MS 2-5
The 2-wire DHSL system uses the DHSL1 and DHSL2 lines to communicate
between the remote head and the transceiver. The following table provides the
pin assignments for the remote connector.
Note: Datron offers an unterminated remote cable (C992309) for connecting
to pre-existing wiring system. Two C992309 cables would be required: one for
the transceiver; the other for the TW7201I.
Note: The C992307 remote cable is actually a 9-conductor cable. The DHSL
modem in the remote head uses only two of the nine wires to communicate
with the transceiver DHSL modem.
2.4.3
Accessory
Connectors
The rear panel hosts two DB25 accessory connectors
ACC 1
and
ACC 2
(refer
to Table 2-3 on page 2-7and Table 2-4 on page 2-8) that support the following
accessories:
• External encryption devices
• Audio interface devices
• Data terminal equipment (DTE)
• External speaker
Encryption
Devices An external encryption device can connect to either connector
ACC 1
or
ACC 2
.
Audio Interface
Devices Audio interface devices such as Datron’s ACU1000 and ACU-T can use either
accessory connector.
DTEs The TW7201I can interface with data terminal equipment (computers)
through accessory connector
ACC 1
. The TW7201I includes two data
channels—the main channel provides full transceiver control; the spare
channel is designed to interface with a computer (DTE) (data transmission
only) so it can use RC2 or DatronLINK to operate and control the TW7000.
Figure 2-5 DB9 Remote Connector Pinout
Pin Signal Pin Signal
1 GND 6 DHSL2
2 Not used 7 REMRXA (not used)
3 Not used 8 REMTXA (not used)
4 Not used 9 Not used
5 DHSL1
1 5
6 9