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18
Installation and Connection
Connecting External Devices
Pin No
Pin Name
I/O
Descriptions
11
EXT port 1*
1
Input
In Remote mode, the logic combination of Ports 1 and 2 determines the transmit and
receive modes 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*
1
Input
13
EXT port 3*
1
Input
[L] GND: RX Tone OFF [H] OPEN: Setup mode
Input a low level signal to indicate that the receiving tone is invalid.
14
EXT port 4*
1
Input
[L] GND: TX Tone OFF [H] OPEN: Setup mode
Input a low level signal to indicate that the transmitting tone is invalid.
15
VCC
VCC
Power supply
This pin provides 13.8 V, 2.0 A, DC from the repeater supply. There is an internal 3 A
fuse to prevent damage to the repeater.
*1: These functions may only be activated while the repeater is in Remote mode.
Pins 6, 7, 8, and 9 Functions Controlled by Operation Mode
Pin No
Pin Name
Receive Mode
In Repeater / Remote Mode
6
TONE IN
Digital
Invalid
Analog
Invalid
7
AF IN
Digital
Invalid
Analog
Invalid
8
DISC OUT
Digital
Invalid
Analog
Discriminator output
9
AF OUT
Digital
Demodulated digital audio
output
Analog
Analog audio output
Caution
Even when using the DR-1X/DR-1XE with an external controller, the COR, analog and digital IDs, TOT, DSC/CTCSS, TX power, etc.
are already controlled by the DR-1X/DR-1XE internal control. These internal controls cannot be disabled. The external controller
must not conflict with these functions. Some functions of the internal controller cannot be overridden.
Before connecting an external controller you must make sure which functions are already internally controlled. Special precautions
must be considered when planning to link with external systems.
Tips
• Make sure to switch off the power to the radio before connecting the cable.
• In case of jamming or interfering signal while in Repeater mode, Pin 1 may be grounded by external control to temporarily disable repeating the receiver
input.
To use DR-1X/DR-1XE in Remote mode
By setting
[REMOTE]
in the setup menu to ON and inputting a low level to Pin 1 of the [CONTROL I/O] connector, the repeater may be
used in Remote mode and controlled remotely by the external controller. Pins 1, 8, 9, 11, 12, 13 and 14 may be used for input, output
and control while in Remote mode.
For details, see “Remote Operation” (Page 25).