19/09/18
Page 18 of 67
ASR650 Operational Manual
3.2.2
ST7
– Antenna Connector
Pin Number
Function
1
Antenna 1
2
Antenna 2
3
Antenna Shield
3.2.3
ST6
– Connector for external LED Board
The ASR650 provides an RJ45 plug for connecting an external LED board. You can also purchase
an external LED board from Agrident, which contains an additional buzzer for audible indication
of a successful tag read.
Pin Function
1
+5V (common anode)
2
Red LED cathode
3
For internal use only!
4
Yellow LED cathode
5
For internal use only!
6
Green LED cathode
7
For internal use only!
8
GND
The external LEDs have the same functions as the on-board LEDs. Please note that there are
series resistors for the red and yellow external LEDs on the reader board already but not for the
green LED. Hence the series resistor for the external green LED must be added externally. It is
important to pay attention on the electrical values of the LEDs and ULN2003.
Please do not use pins 3, 5 and 7
– these are only used for internal purposes on the ASR650!
Pin 8 (Ground) is not needed for connecting external LEDs, as shown in the schematic above.
µP
ASR650