TransCore 05716 Manuel D’Utilisation

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 

5.

As a last test, attach test tags to vehicles and simulate traffic going through the 
read zone to verify that the system performs accurately in a live environment. 

The MPRR read zone can be fine-tuned by using command #643NN for ATA tag 
read mode or #645NN for SeGo protocol tag read mode to reprogram the RF sensi-
tivity 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 pat-
tern 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.

1.

Ensure that your PC is communicating with the MPRR using a terminal 
emulation program as described in “Verifying Communications” on page 8-8.

2.

Mark the current read zone as described in 

.

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 mini-
mum 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.

1.

Ensure that the MPRR is in data mode.

2.

With the MPRR 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 host device 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 host device screen.