Quick Reference Guide
3.2 FCC Approval Frequency Hopping
The APTool allows you test the frequency hopping behavour of the DR-U-USB required for
FCC. In this mode the DR-U-USB change the frequency every >400ms in a range from 902.75
to 927.25Mhz (channel bandwidth 500Khz) for 50 channels
To proceed with
the
frequency hopping
test
:
•
Select the tab 'Hopping Test'
•
Set the power to 22dbm (see page 9 - 5.1To set the power level)
•
Click the 'Start' button to make the DR-U-USB run the test mode.
The carrier indication Icon change from 'Carrier off' to 'Carrier on'
•
Click the 'Stop' to stop the test.
The carrier indication Icon change from 'Carrier on' to 'Carrier off'
IMPORTANT NOTICE
After you finished the test, close the program and restart the DR-U-USB by unplug the
desktop reader from the USB port and connect it back to the USB port after 10 sec.
( there is a know issue with the firmware to be fixed with the next release )
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