HID Global Corporation 5553 Manuale Utente
HF Multi ISO RFID Reader User Manual, Firmware V1.4
1508-USM-00-0-04
Table 16 - J3 pins in RS422 Configuration - Electrical Characteristics
PIN No.
Min
Typ.
Max.
Description
PIN
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
Interface
RX/RXA 4
-7V
+12V
RXA
RS422
TX/TXA
5
-7V
+12V
TXA RS422 / Differential
RXB 6
-7V
+12V RXB
RS422
TXB
7
-7V
+12V
TXB RS422 / Differential
PIN No.
Conditions
Min
Typ.
Max.
Description
Differential Output Voltage 4/6
Unloaded GND
V
CC
Differential Output Voltage 5/7
Loaded:
R
R
L
=50
Ω
V
CC
2V
1
20
1
7
J3
+5V
Ground
RXA
TXA
Ground
RXA
TXA
RS422 Configuration
RXB
TXB
TXB
Figure 18 - RS422 Configuration - Jumper 3 Pin Out
August 2010
Page 131 of 144
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