Compaq 99875320-5 - Manual (Page 20)

USB HID IntelliHead Swipe Reader
TRACK 2 DECODE STATUS
Bits 7-1 0
Value Reserved Error
This is a one-byte value, which indicates the status of decoding track 2. Bit position zero
indicates if there was an error decoding track 2 if this bit is set to one. If it is zero, then no error
occurred. If a track has data on it that is not noise, and it is not decodable, then a decode error is
indicated. If a decode error is indicated, the corresponding track data length value for the track
that has the error will be set to zero and no valid track data will be supplied.
TRACK 3 DECODE STATUS
Bits 7-1 0
Value Reserved Error
This is a one-byte value, which indicates the status of decoding track 3. Bit position zero
indicates if there was an error decoding track 3 if this bit is set to one. If it is zero, then no error
occurred. If a track has data on it that is not noise, and it is not decodable, then a decode error is
indicated. If a decode error is indicated, the corresponding track data length value for the track
that has the error will be set to zero and no valid track data will be supplied.
TRACK 1 DATA LENGTH
This one-byte value indicates how many bytes of decoded card data are in the track 1 data field.
This value will be zero if there was no data on the track or if there was an error decoding the
track.
TRACK 2 DATA LENGTH
This one-byte value indicates how many bytes of decoded card data are in the track 2 data field.
This value will be zero if there was no data on the track or if there was an error decoding the
track.
TRACK 3 DATA LENGTH
This one-byte value indicates how many bytes of decoded card data are in the track 3 data field.
This value will be zero if there was no data on the track or if there was an error decoding the
track.
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