PROMAG
DF7XX
REV.C
20
ANNEX B. Wiegand Interface
The Data 1 and Data 0 signals are held at a logic high level unit, the reader is ready to send a data stream.
The reader places data as asynchronous low-going pulses on the Data 1 or Data 0 lines to transmit the data
stream to Host. The Data 1 and Data 0 pulses will allowable pulse width times and pulse interval times for the
DF7XX Reader.
Data 1 Signal
Data 0 Signal
` Tpw Tpi Tpw Tpi
Pulse Times
Symbol
Description
Typical Time
Tpw
Pulse Width Time
100us +/- 3%
Tpi
Pulse Interval Time
1.9ms +/- 3%
Wiegand Packet (Without Reader ID)
Standard (Default) Parity(Even) (MSB) Data Bits (LSB) Parity(Odd)
Reverse (Option)
Parity(Odd)
(LSB) Data Bits (MSB) Parity(Even)
Connect the Wiegand wires, example as below: (The pull high resister must >= 10K Ohm)
Optional: External LED/Buzzer Control (Brown)
(Red)
(Black)
Data 0 (Green)
Data 1 (White)
HOST/Terminal
DF700
7.5~24VDC
GND
GND
10K
ohm
10K
ohm
5VDC
Pull high resistor
>=10K Ohm
