User manual

Copyright © 2011, Unitech America Inc. All rights reserved.
Page 24 of 61
MS246 User Manual
5 T3 data length
6 Card encode type
7,8 Total output length
9-512 Output data
In this approach, the reader will keep all of the Unitech data editing and
other features like preamble, postamble, etc. The output data is always 512
bytes; the "Total Output Length" field indicates the valid data length in the
output data.
8.1.2. Descriptor Tables
Device Descriptor:
Field
Value
Description
Length
12
Des type
01
bcd USB
00 02
USB 2.0
Device Class
00
Unused
Sub Class
00
Unused
Device Protocol
00
Unused
Max Packet Size
08
VID
0A CD
PID
20 10
20 20
20 30
HID Unitech Structure
HID Other Structure
HID Keyboard
BCD Device Release
00 01
i-Manufacture
01
i-Product
02
i-Serial-Number
00
# Configuration
01
Configuration Descriptor:
Field
Value
Description
Length
09
Des type
02
Total Length
22 00
No. Interface
01
Configuration Value
01