26
Repeater Operation
Remote Operation
Control from external controller
Your external controller must generate and accept the following signals through a connection cable with a 15-pin mini d-sub connector
corresponding to the [CONTROL I/O] connector of the repeater.
Caution
Do not use a VGA cable for PC display to connect your external controller to the repeater.
Pin No
Pin Name
I/O
Descriptions and Settings
1
EXT I/O
Input
L (GND)
Mode selection. Fix this input to low level to enable remote operation.
2
PTT
Input
L (GND): EXT PTT ON H (OPEN): EXT PTT OFF
When this pin is pulled low by an external device, it keys the repeater transmitter.
Tip
On signaling while controlling the external PTT:
Pin 6 (TONE IN) ... Valid
Pin 7 (AF IN) ... Invalid
3
CTCSS/DCS
(PKSQL)
Output
L (GND): Decoded H (OPEN): Un-decoded
Signaling settings in the repeater setup menu will be applied.
4
SQL DET
(Noise SQL)
Output
L (GND): SQL open H (OPEN): SQL close
This indicates whether the receiver squelch is open. If the squelch control is properly set,
this indicates a carrier on the receiver channel.
5
GND
GND
Chassis ground for all logic levels and power supply return
6
TONE IN
Input
CTCSS/DCS EXT input / 600 ohm, 500 mV peak to peak
Valid during external PTT control
7
AF IN
Input
EXT Modulation input / 600 ohm, 1.5 V peak to peak
Valid during external PTT control
Caution
It is impossible to input analog modulation signals and convert them to digital signals on
DR-1X/DR-1XE.
Tip
AF IN is usually used for analog modulation input with a packet speed of 1200 bps, however, to
input C4FM digital signals for digital modulation operations, enter the DR-1X/DR-1XE Repeater
mode, then touch the up-link frequency display area to change the packet speed to 9600bps (see
the next page).
8
DISC OUT
Output
Up-link RX DISC output (w/o de-emphasis), 500 mV peak to peak
Discriminator output during up-link reception
9
AF OUT
Output
Up-link RX AF output (w/ de-emphasis), 300 mV peak to peak
Analog or demodulated digital audio output during up-link reception
10
GND
GND
Chassis ground for all logic levels and power supply return
11
EXT port 1
Input
The logic combination of these two pins determines the communication mode of
transmission and reception as below:
Port 2
Port 1
RX
TX
H
H
Auto (AMS)
FM
H
L
FM
FM
L
H
Digital
Digital
L
L
Auto (AMS)
Auto (AMS)
12
EXT port 2
Input
13
EXT port 3
Input
L (GND): RX Tone OFF H (OPEN): RX Tone ON (with signal type set in the setup mode)
Input a low level signal to indicate that the receiving tone is invalid.
14
EXT port 4
Input
L (GND): TX Tone OFF H (OPEN): TX Tone ON (with signal type set in the setup mode)
Input a low level signal to indicate that the transmitting tone is invalid.
15
VCC
VCC
Power supply (13.8 V DC)
