Table of Contents
Advertisement
COMPUTER
=> RADIOTELEPHONE
INTERFACE
The TRC-80 interfaces easily with a computer by using
the optional IF-232C Interface Unit. After you manually
switch OFF the radiotelephone power, you can then
switch ON the radiotelephone power using commands
from the computer. Similarly, after switching OFF the
power from the computer, it is then possible to switch
ON the power from the Front Panel.
COMMUNICATION PARAMETERS
In order to control the radiotelephone with your
computer, you must set the correct communication
parameters in the computer terminal application.
Configure your computer application for 9600 bps, 8
data bits, 1 stop bit, and no parity.
HARDWARE DESCRIPTION
The TRC-80 uses a full-duplex, asynchronous, serial
interface for communicating through the female 6-PIN
DIN ACC 1 connector.
Bytes are constructed with
1 start bit, 8 data bits, and 1 stop bit. No parity is used.
The pinout and the pin functions of the ACC 1
connector are as shown below:
ACC 1 CONNECTOR
@
@
®
Viewed from the
radiotelephone
Rear Panel
1
GND
Signal ground
=
2
TXD
Transmit data
Output
3
RXD
Receive data
Input
4
CTS
Transmit enable
Input
5
RTS
Receive enable
Output
6
NC
|
Not connected
=
GND:
This is the signal ground pin.
TXD:
The transmit data is the serial data transferred
from the radiotelephone to the computer. The output
uses negative logic.
RXD:
The receive data is the serial data transferred
from the computer to the radiotelephone. The input
uses negative logic.
14
CTS:
This signal is supplied from the computer to the
radiotelephone. It is used to inhibit transmit data from
the radiotelephone when the computer is not ready to
receive the data. The input uses positive logic. Inhibit is
requested when the level is low.
RTS:
This signal is supplied from the radiotelephone to
the computer.
It is used to inhibit transmit data from the
computer when the radiotelephone is not ready to
receive the data. The output uses positive logic.
Transmit data is stopped when the level is low.
Note:
Refer to the Appendix beginning on page A1 for additional
information regarding computer control.
Advertisement
Table of Contents
