Interference Analyzer (Option 25) 3-8 Interference Mapping
Spectrum Analyzer MG PN: 10580-00349 Rev. H 3-17
B. Use the MA2700A HIH with a directional antenna to locate the bearing of the strongest
signal. When the HIH is aligned with the direction of the interfering signal briefly pull
and release the trigger on the HIH to record the current location and bearing line of the
interferer.
Pulling the MA2700A trigger will prompt the Anritsu analyzer to beep. Releasing the
pulled trigger has two functions:
• Release the trigger after the initial beep (< 1 second) to capture location and
signal data. This has the same function as pressing the Save Current Bearing
Location & Direction submenu key (refer to “Bearing Lines Menu” on page 3-67).
• Release the trigger after the second beep (~ 2 seconds) to toggle the preamp in the
MA2700A and the Anritsu analyzer On or Off.
The compass acquires the bearing line data for the MA2700A Handheld Interference
Hunter. The compass will display a light gray T or M; T for true North, M for magnetic
North. The pitch and roll indicators will display how level and plumb the MA2700A is
while searching for interference signals. The compass bearing is most accurate when
the MA2700A is level. To the right of the compass and pitch and roll indicators are the
numerical values for Bearing, Pitch, and Roll.
C. Move to the next location and repeat step 5B. You now have two lines on the screen and
an idea of where the interfering signal is located. Pan & Zoom as needed (if using an
AZM map). An example of interference mapping with the MA2700A where the
approximate location of the interferer is determined is shown in Figure 3-10.
1 Maximum signal level.
2 Minimum signal level.
Figure 3-10. Interference Mapping Overview (1 of 2)
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