Control Panel Options 49
E-EQ-RX2RG-B RX2 Reference Guide
Tag Types to Read
On the RX2, tag types to read is controlled by the APIs the user application calls. Therefore the
Tag Types to Read check boxes have no effect on the RFID reader. However, the number of
attempts does affect the LXE read APIs.
Class 0 and Instant tags are more difficult to read. For this reason, a read operation can contain a
user-defined number of read attempts. The default for Class 0 tags is 4 read attempts. This means
that Read API is performed for Class 0 tags 4 reads are be performed internally; the results
merged, duplicate tags removed, and the result is then made available to the application.
Default number of reads for collecting Class 0 tags is 4. Valid values are between 1 and 10.
Default number of reads for collecting Class 1 tags is 1. Valid values are between 1 and 10.
Default number of reads for collecting Class 1 Gen 2 (C1G2) tags is 1. Valid values are between 1
and 10.
Change the attempts value by clicking the drop down list box and selecting a number from the list.
Click OK to save the change or X to ignore the change and return to the Control Panel.
Class 0 Singulation
This setting has no effect on the RX2’s RFID reader.
C1G2 Q-Value
When scanning large numbers of tags, the C1G2 Q-value sets the amount of time to delay when
sending tag reads to the keyboard buffer. A larger number increases the time delay interval. The
default value is 3. Valid values are between 0 and 15.
Reader Output
These options affect the LXE APIs. However, there are LXE APIs that can also be called by the
user application to set the Preamble, Postamble and Separator.
Preamble A preamble is a lead-in character for tags transmitted to the host
device. The lead-in characters are considered part of the tag.
The Preamble field will accept up to 5 characters that can be specified
by a combination of 7-bit ACSII characters and “hat” encoded
characters.
Postamble A postamble is a follow-on character for tags transmitted to the host
device. The follow-on characters are considered part of the tag.
The Postamble field will accept up to 5 characters that can be specified
by a combination of 7-bit ACSII characters and “hat” encoded
characters.
TAG data separators Use data separators to add spacing between read tags. Up to 2
characters that can be specified by a combination of 7-bit ACSII
characters and “hat” encoded characters.
For example, ^M^J places a carriage return (^M) and line feed (^J)
after each tag is successfully read.
When the maximum number of characters is exceeded, the mobile device beeps and will not allow
more characters to be entered. However, “hat” encoded characters count as a single character in
determining the number of characters entered into the field. Click OK to save the change or X to
ignore the change and return to the Control Panel.
See Also: “Hat Encoding”.
