HID Hi-O iCLASS Installation Guide - Manual (Page 8)

iCLASS OEM75 Integration Guide, 3141-907, Rev. B.0
Page 8 of 49 January 2014
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2.3.1 OEM50
If transitioning from an OEM50 – here are the differences.
The OEM50 connector is a 2 X 6 0.1" space pin header or PWB hole pattern.
The OEM50 has a two-wire interface to the antenna and the OEM75 has a four-wire interface.
Therefore, the OEM50 antenna will not work with the OEM75, and vice versa.
The harness and signal changes to adapt the signals from the OEM50 2 X 6 pattern to an
OEM75 1 x 9 1.25mm pattern are the following.
Note: The additional P2 for HSI and SPI interfaces are 1 x 8 1.25mm pattern.
OEM50 OEM75
P2 Connector
Pin 1 Exc Supply No signal on the OEM75
Pin 2
Exc Return is not
used
No signal on the OEM75
Pin 3 Serial Transmit Same as OEM75 P1 pin 8 - UART Transmit
Pin 4 Serial Receive Same as OEM75 P1 pin 7 - UART Receive
Pin 5 Vdd Return Same as OEM75 P2 pin 2 - Battery Minus
Pin 6 Vdd +5VDC
Same as OEM75 P2 pin 1 - Battery Positive
and 5VDC is a good supply voltage
P1 Connector
Pin 1 Open Output OEM75 does not have a similar signal
Pin 2 Ground Same as OEM75 P1 pin 2, signal Ground
Pin 3 Wiegand Data1
Wiegand data output is per the SIA AC-01 (1996.10)
specification, except Voh is 3.3VDC max, and not 4.0
to 5.5 VDC
OEM50 is inverted logic
Pin 4 Wiegand Data0
Wiegand data output is per the SIA AC-01 (1996.10)
specification, except Voh is 3.3VDC max, and not 4.0
to 5.5 VDC
OEM50 is inverted logic
2.3.2 eProx Lock Module
The eProx ® Lock connector is mechanically the same as the OEM75’s connector P2. Be aware
however, that the connections between the OEM75 module and the eProx Lock module are
reversed. This implies that a straight-thru cable will not work. A 180 degree twist of the cable is
required to insure that Pin 1 on one of the modules correctly mates with Pin 1 on the other module.
The two-wire 125 kHz antenna for the eProx Lock is not interchangeable with an OEM75 antenna.