PILOT’S
GUIDE
54
STRIKE FINDER
DIGITAL WEATHER AVOIDANCE
P - Continuously displayed
P channel failure, or
sense antenna
fault.
Check sensor cable / connector wiring for conductor PF.
Exchange display and sensor with known good components.
P - Intermittently displayed
This code will disappear and re-appear, randomly. When a real storm cell
is being plotted on the display, a ‘mirror image’, or ambiguous storm cell will
be plotted, usually with fewer dots than the real storm cell. In
Dealer
Mode
, the activity number will usually be acceptably stable.
Possible loose connection on sensor cable/connector conductor PF.
In most cases, this error code is the result of repetitive voltage noise
being coupled into the sense antenna at a sufficiently high rate and
amplitude to cause interference with the test pulse. This causes the P
channel test to fail intermittently.
Use the
Insight Audio Tester
(P/N 2000-060) to isolate the interference
source, by switching various electrical equipment on, one at a time.
The most common voltage noise sources are DME, transponder, and
navcom.
Ensure that all sensor cable shields are connected to pin 10 of the display’s
DB25 connector.
Check DME, transponder, and navcom antenna coax terminations as
indicated.
Check shields, grounds, and power supply filters on relevant interfering
equipment.
Strike Finder Pilot's Guide fix 9/19/05 10:59 AM Page BG