Specifications

Installation 2-7
Telephone Couplers
Telephone couplers like the TW5810 or TW5850, use either Acces-
sory 1 or Accessory 2. The appropriate pins are as follows:
EIA Data Interface Standards
The TW7000 interfaces with a variety of data communications equip-
ment (DCE) or data terminal equipment (DTE) using EIA standards
RS232, RS422, or RS485. Accessory 1 is configured to provide the
standard I/O port (COM1) for these interfaces. The RS232 protocol is
standard, all others are optional. It is necessary to order the 7000RS
option and to specify the required protocol so the appropriate interface
chip is inserted into the processor. Pins used on Accessory 1 are as
follows:
Automatic Antenna Tuners
The TW7000 interfaces with the complete line of DWC automatic
antenna tuners. This includes the older AT/RAT100 and RAT1000, as
well as the newer AT/RAT7000B.
The AT/RAT100 and RAT1000 tuners must be connected to Acces-
sory 2 using the following pins:
Pin Number Description
1Ground
6 BALRXA1 (balanced RX audio)
7 BALRXA2 (balanced RX audio)
8 BALTXA1 (balanced TX audio)
9 BALTXA2 (balanced TX audio)
10 AUXPTT\
13 +12V ACC
Pin Number Description
1 Ground
2 COM1RXD (RS422/RS485)
3 COM1CTS (comport 1 clear-to-send)
4 COM1TXD (RS422/RS485)
5 COM1RTS (comport 1 request-to-send)
Pin Number Description
1 Ground
2 Ground