INSIGHT STRIKE FINDER Pilot's Manual page 54

STRIKE FINDER
In order to locate and correct an interference problem, select
Mode on the display, and clear the display. Watch the activity number in the
lower left corner.This number is a count of the number of times Strike Finder
is triggered. The goal of interference investigation is to reduce the rate of
triggering (in the absence of real storm activity) to one every 30 seconds,
or longer, and to ensure that no dots are being plotted.
If a cluster or line of dots is being plotted, switch off all other electrical
equipment in the aircraft, and clear the display. If dots appear again in the
same location, rotate the aircraft and again clear the display. If the dots
appear at a new location, the interference source is external to the aircraft,
and further testing may not be necessary. If the dots appear at the same
location, no matter what the aircraft heading, then the source is on the
airframe or is being generated by the Strike Finder system itself.
Connect the display to a separate battery, and switch off the aircraft
master switch. If dots continue to appear at the same location, the Strike
Finder is generating its own dots, and both display and sensor must be
returned for repair.
If the display is not plotting dots at this point, and the activity number is now
stable, begin switching on various electrical devices, one at a time, until the
activity number begins to increase. Use this technique to identify interference
sources. All systems should be activated, including trim motors, strobe lights,
DME, transponder, and engines.The most common sources are alternators,
strobe lights, and trim motors.
To assist in this procedure of identifying interference sources the Insight
Audio Tester (P/N 2000-060) may be used.
Y0, Y1, or Y2 - Continuously displayed
Y channel bandwidth, gain, or phase error. Fault may be in display, sensor,
or cable.
Check sensor cable / connector wiring for conductors YA and YB.
Exchange display and sensor with known good components.
Y0 - Intermittently displayed
This code will disappear and re-appear, randomly.
Possible loose connections on sensor cable/connector conductors YA
and YB.
PILOT'S GUIDE
DIGITAL WEATHER AVOIDANCE
Dealer
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