Digital Monitoring Products, Inc | 7800INT Series International Installation and Programming Guide
22
Wiegand Code Length
When using a custom credential, enter the total number of
bits to be received in Wiegand code including parity bits.
Press any select area to enter a number between 1-255 to
equal the number of bits. Default is
26
bits.
Typically, an access card contains data bits for a site code,
user code, and start/stop/parity bits. The starting position,
location, and code length must be determined and
programmed into the keypad. See Figure 10.
WIEGAND CODE
LENGTH:
26
0 1 1 1 0 1 0 1 1 0 1 1 0 1 0 1 0 0 0 1 1 0 0 1 1 1
First Bit
Received
Position=0
Site Code
Position=1
Length=8
User Code
Position=9
Length=16
Last Bit
Received
Position=25
In this example the Wiegand Code Length = 26 bits.
Figure 10: Data Stream Bit Location Example
