Nedap VP1007, Service Manual

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VP1007-200PM-00 ISO Reader I/O Manual version 0.4 / Page 8
Antenna squelch
Antenna squelch is a possibility to set a threshold for the ID level of a tag. It means the antenna power
is still the same, but the software will not transfer weak received tag numbers.
The antenna squelch default is set to minimum (-0). This means no threshold. Maximum is -9.
Check the antenna squelch level
The antenna squelch level is shown on the display in the service menu at HF, option AS (Adjust
Squelch)
1. Select menu option AS (Adjust Squelch) on the display by using the push button
2. Push the button until the display starts to blink, a value will appear on the display
3. The value on the display is the actual setting. -0 is the default factory setting.
4. To leave the menu without modifying the settings press the button until the display goes blank
(press about 4 seconds)
Modify the antenna squelch level
1. Select the actual antenna squelch level on the display (see above squelch level check)
2. Short press on the button and the value will change
3. Continue to press until the desired value, then hold the button until blinking
4. The next menu item “df” is now indicated.
5. Hold a tag in the antenna and determine the maximum reading distance
6. If reading distance is ok leave the menu. If not ok try another level.
7. To leave the service menu and return to normal operation, press the button until the display
goes blank (press about 4 seconds)
6.3 Identification test options
Identification test with option “id”
When a tag is in the antenna field, the green LED used for the antenna tuning will be blinking. There is
also a test in the internal test menu called “id”. This test will also show the green LED blinking but also
shows the last two digits of the tag number on the display.
Signal level indication option “SF” and “SH”
There is a test available to give an indication about the signal received on the reader of the VP1007.
This test is separated in a FDX (SF) and HDX (SH) noise indication test. This test is mainly used for
HDX because at HDX there is a greater risk of external influence on the antenna field.
How to use the signal level test
1. Select option “SH” on the display and press the button until the display starts to blink. A value
will appear on the display.
2. Now move a HDX tag slowly into the antenna field. The display value will normally increase
when getting closer to the antenna. If there is negligible or little increase in display value this is
an indication something external is causing noise.
The possible cause of noise can be frequency controlled electric motors or a transmitter operating on
or close to 134.2 kHz