TransCore MPRX 10-7200-001, Руководство пользователя

Страница: 98 / 138

5. Verify that the read zone has decreased by moving the tag through the desired read area. If the
read zone is still too large, switch to command mode and enter the Command
#64402
to lower
the output RF power another 1 dB. Continue increasing the NN value until the read zone matches
the desired read zone.
When the desired read zone is established, test the read zone with simulated and real traffic by
performing the following procedures:
To test the read zone
1. Ensure that the MPRX is in data mode.
2. With the MPRX running, place one tag behind your back while you hold another tag in the new
read zone. If a valid read, the data from the tag held in the read zone displays on the PC screen.
3. Switch tags, placing the other tag behind your back and holding the first tag in the read zone. If a
valid read, the data from this tag held in the read zone displays on the PC screen. If both tags are
read, you have successfully adjusted the read range.
4. If one or both tags did not read, follow the suggestions in “Verifying Tag Read Capability” on page
6–90 .
Fine-tuning the Read Zone by Adjusting Sensitivity Range
The MPRX read zone can be fine-tuned by using Command
#643NN
for ATA protocol tag read mode
or
#645NN
for SeGo protocol tag read mode to reprogram the RF sensitivity range. Sensitivity range
adjustments have less impact on the read pattern than RF power adjustment, thus RF power adjustment
should be used as the main read pattern adjustment tool. Sensitivity range control may be helpful in
stopping some tag reads on the very edges of the read pattern. To produce a noticeable change in the
read pattern, you must decrease the range sensitivity by more than one increment.
To adjust the read zone by adjusting sensitivity range
1. Ensure that your PC is communicating with the MPRX using a terminal emulation program as
described in “Verifying Communications” on page 6–88 .
2. Mark the current read zone.
3. Enter Command
#01
to switch to command mode. You are prompted with
#DONE
from the reader
and can now enter reader commands.
4. Enter Command
#64318
or
#64518
to decrease the range sensitivity seven increments below the
maximum (default). Press ENTER.
Note: In the Command
#643NN
or
#645NN
, NN can be any hexadecimal value from 00 to 1F. The
reader’s receiver becomes less sensitive to tag signals as the value of NN is lowered from the
maximum sensitivity of 1F to the minimum sensitivity of 00.
5. Verify that the read zone has decreased by moving the tag through the desired read area. If the
read zone is still too large, switch to command mode and enter the Command
#64317
or
#64517
to decrease the range another increment. Continue increasing the NN value until the read zone
matches the desired read zone.
When the desired read zone is established, test the read zone with simulated and real traffic by
performing the following procedures.
MPRX User Guide
TransCore Proprietary 6–98