OBID
i-scan
®
UHF
Manual
ID ISC.MU02.02
FEIG ELECTRONIC GmbH
Page 29 of 96
H90701-3e-ID-B
7.2.2. Wiegand Emulation
Data Format:
The following description represents the data coding depending on DC-FORMAT
DC-FORMAT = b000
⇒
binary 1:1
In this configuration the output data format is equal to the data coding on the
Transponder. The Reader doesn't add a protocol frame e.g. parity Bits or start or
stop signs across the data stream.
DC-FORMAT = b100
⇒
Wiegand formatted protocol frame with start and stop sign
In this configuration the Reader build the protocol frame with one even parity bit
at the beginning and one odd parity bit at the end and one start and one stop
sign:
4 Bit
1 Bit
n Bit
1 Bit
4 Bit
START
EVEN
DATA
ODD
STOP
START: b1011
EVEN: Even parity bit calculated across the first half DATA bits.
DATA: Data bits as read from the Transponder and defined in scan-mode set-
tings.
ODD:
Odd parity bit calculated across the last half DATA bits.
STOP: b1111
DC-FORMAT = b110
⇒
Wiegand formatted protocol frame
In this configuration the Reader build the protocol frame with one even parity bit
at the beginning and one odd parity bit at the end
1 Bit
n Bit
1 Bit
EVEN
DATA
ODD
EVEN: Even parity bit calculated across the first half DATA bits.
DATA: Data bits as read from the Transponder and defined in scan-mode set-
tings.
ODD:
Odd parity bit calculated across the last half DATA bits.
