User's Guide

USER GUIDE: UBS-200L LF DESKTOP READER
April 4, 2019
Unified Information Devices | Chapter 3 – Operating and Configuring the UBS-200L
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assistance in using the UID KWSPR command. Available keystrokes are summarized in Table 12 of the
“Universal Serial Bus (USB) HID Usage Tables.”
LF Module Configuration Commands
Suppress Multiple Reads “CID”
To suppress multiple reads of the same transponder from being transmitted to the host, send the “CID
1” command. With CID set to 1, a transponder ID will only be transmitted to the host one time until
another transponder is presented or the “Misread Failure Protection “NID”
While corrupted data reads are rare, they are possible under specific circumstances. As such, it may be
desirable to validate the transponder ID through two consecutive reads. Sending the command “NID 1”
forces the UBS-200L to compare two consecutive reads of the same transponder. The transponder ID
will NOT be returned unless two consecutive reads are validated to be identical by the UBS-200L. This
may slow down the ID process, and is recommended only for circumstances requiring such redundancy.
It is NOT recommended for situations in which the transponder is difficult to read, or passes by the
antenna quickly.
Sending the command “NID 0” turns this functionality off, so that a transponder ID is returned with a
single valid read.
Note:
The NID redundancy check only works when reading IDs in MD 0
mode, or with the “GT” command. Setting NID parameter to 1
while in MD 4 mode or with the “GTC” will result in NO data being
returned.