NR-
Operation Manual
17
Use
ATT
button to adjust maximum receiver sensitivity.
Turn antenna unit at various directions to estimate noise condition
at the device receiving frequencies.
Choose the direction with minimum interference level.
Carry out Detector workability test:
10. NR-T WORKABILITY TEST
-
Press
PWR
button to set minimum probing signal power
confirmed by corresponding LED (item 2 at the fig.4).
-
Place standard imitator (test unit) in front of the antenna module
at 0,5-0,7 m from it.
-
A tonal signal can be heard from remote loudspeaker as well as
received signal level should be indicated by 2-nd harmonic LED
bar-graph indicator.
-
Alter imitator position in front of antenna module to light-on all
2-nd harmonic LEDs. Then sequentially pressing ATT-button
adjust received signal attenuation from ‘0’ to ‘-40 dB’ and make
sure of a corresponding LED bar-graph indication.
-
Press
PWR
button to boost probing signal level. Ensure, that the
number of lit LEDs of "
2
" status bar changes accordingly.
USERFUL HINT: In case of battery discharge
‘2’ & ‘3’ LEDs (item 8 at the fig. 4) are lit by turns
In this case the battery should be replaced.
DETECTOR IS READY FOR OPERATION
Switch –off Detector if practical operation is not supposed
