User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 136
16.1.3.2 Electrical characteristics of J3 PINs in RS232 Configuration
PIN PIN No. Min Typ. Max. Description
RFU 1 Do not connect
4.5V 5V 5.5V Supply Voltage
+5V 2
150mA 250mA Supply Current (without
SAM)
GND 3 GND Ground for Power
Supply and Interface
RX/RXA 4 -15V
3k
Ω 5kΩ
+15V
7kΩ
RS232 Voltage Levels
Input Impedance
TX/TXA 5 ±5V
300k
Ω
±9V RS232 Voltage Levels
Output Impedance
RXB 6 Do not connect
TXB 7 Do not connect
1
20
1
7
J3
+5V
Ground
RX
TX
RS232 Configuration
Figure 16-3: Pin out of jumper 3 in RS232 Configuration