21
RELAY Ports
The relay ports (port 21 on the DVX) are 4-pin 3.5 mm mini-Phoenix (male) connectors used for connecting
external relay devices.
When a relay is "OFF", terminals A and B are open circuit. When a relay is "ON", terminals A and B are
shorted together.
I/O Ports
The I/O ports (port 22 on the DVX) are 4-pin 3.5 mm mini-Phoenix (male) connectors used for connecting
logic-level outputs. The I/O port responds to either switch closures, voltage level (high/low) changes, or it
can be used for logic-level outputs. Each port is capable of being used as an input or an output.
A contact closure between the GND and an I/O port is detected as a Push.
When used for voltage inputs, the I/O port detects a low signal (0 - 1.5 VDC) as a Push, and a high signal
(3.5 - 5 VDC) as a Release. (This I/O port uses 5V logic but can handle up to 12V without harm).
When used for outputs, the I/O port acts as a switch to GND and is rated for 200mA @ 12 VDC.
The PWR pin provides +12 VDC @ 200 mA output.
The GND connector is a common ground and is shared by all I/O ports.
The input impedance on the I/O port is 22k.
I/O Port Pinouts
Pin Signal Function
Pin 1 GND Signal GND
Pin 2 I/O 1 Input/Output
Pin 3 I/O 2 Input/Output
Pin 4 12 VDC PWR
In the above table, pin 1 is located on the right side of the port, and the pinouts count up to the left.
IR/SERIAL Port: Connection and Wiring
The IR/SERIAL port (port 11-12) provides IR transmit/one-way serial connections that support
high-frequency carriers up to 1.142 MHz. You can simultaneously generate up to two IR/Serial data signals
on the DVX-3266-4K and DVX-2265-4K.
These ports accept an IR Emitter that mounts onto the device's IR window, or a custom cable that connects
to a device's control jack. You can also connect a data 0 - 5 VDC device to these ports.
NOTE:
The maximum baud rate for ports using DATA mode is 19200. Also, DATA mode works best when using a short
cable length (< 10 feet).
NOTE:
For each data signal, the negative (-) terminal is for Signal GND, and the positive (+) terminal is for IR/Serial data.
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