Expert Electronics SunSDR2 DX - Page 23

23
SunSDR2 DX User Manual
© 2020 Expert Electronics
CONNECTORS PIN-OUT
4
RB
RS-485 (-) Line
Input/Outp
ut
5
I2
Connection of buttoned detector. Connect to ground. In
reserve.
Input
6
CP
Contact of protected diode
--
7
X3
Programmable key with open collector
Output
8
X6
Programmable key with open collector
Output
9
RA
RS-485 (+) Line
Input/Outp
ut
10
I1
Connection of buttoned detector. Connect to ground. In
reserve.
Input
11
X2
Programmable key with open collector
Output
12
X5
Programmable key with open collector
Output
13
X8(РТТ)
Programmable key with open collector for control of
external PAs PTT
Output
14
+13.8V
Pin to supply external devices, nominal current 1A
There is a 1A fuse integrated in the line - 2A fused
Output
15
GND
Ground
--
Note:
· When an electronic key with open collector triggers, it leads to key's ground connection.
Voltage drop equals 0.7V.
· RS-485 interface is reserved.
· Logic inputs of the buttoned detectors are reserved.
Warning!
i Maximum allowed current via electronic keys is 500 mA!
i While connecting an inductive load (relay, solenoids etc.) to the X1-X8 keys, it's
important to connect the protective diode in parallel to the load!