Common features:
Interfaces
Input/output
Power
3.5mm pitch 3 way terminal block
3.5mm pitch 3 way terminal block
(third pin is the PGM input)
RF
5mm pitch 2 pin way terminal block for Helical coil or ¼ wave
monopole antenna (or optional soldered-in aerial)
Indicators
receiver LED
DTX/DRX IC
Clock
3.58MHz (ceramic resonator)
Data rate
500bps Biphase coded burst lasting 150ms
Addressing User programmable 16 bit address
Operating temperature
-20 to +70 degrees centigrade (some radios may be limited to -10/+55)
(Storage
-30 to +70 degrees)
Figure 2: DXT2, DXR2 interfaces
DTX board
Inputs
Active low logic inputs ('set' and 'reset/momentary)
Pullups to 3V, and protection diodes, provided
Compatible with Normally Open volt-free closing contact (push-buttons)
Supply
4 –15VDC
idle current: <1uA
transmit current (depends upon radio module fitted)
20mA with NTX2-434.650-10 fitted
Radio modules
Size
Any low power SIL pinout transmitter (TX1, NTX2B, TX2A, TX3B)
71 x 32 x 16mm (3.3mm diameter mounting holes are provided)
Radiometrix Ltd
DX series control boards
page 2
RADIOMETRIX [ RADIOMETRIX LTD ]
