Operation; Power-Up; Continuous And Operator-Initiated Self Test; Heading Stabilization - Honeywell KMD-150 Pilot's Manual

Stormscope Operation

OPERATION

As mentioned earlier, the WX-500 is controlled through the KMD 150.
The focus on this section is to provide both background information and
a more detailed explanation of the operating procedures. The following
text assumes you have both the WX-500 and the KMD 150 switched on
and that you have selected the Stormscope screen from the main menu
on the KMD 150.

POWER-UP

At power-up, the WX-500 executes a power-up self test. The self test
takes approximately 25 seconds to ensure that all major WX-500 func-
tions are operating properly. During this period you may receive a 'NO
STORMSCOPE DATA' message, this is normal. Functions tested
include antenna reception, memory and microprocessor functions. An
error message is displayed if a fault is detected. Refer to the section on
error messages later in this section for more information.

CONTINUOUS AND OPERATOR-INITIATED SELF TEST

In addition to the power-up self test, the WX-500 performs a continuous
self test. Items tested include antenna operation, microprocessor func-
tions, memory and heading inputs. This continuous self test is per-
formed several times each minute. There are also provisions for an
installer-initiated self test that can be executed through the Stormscope
setup screen.

HEADING STABILIZATION

The heading stabilization feature automatically adjusts the position of the
discharge points on the display when your aircraft changes heading.
Heading information may come from one of two sources. Firstly, you
may have a remote heading source installed in your aircraft that has
been connected to the WX-500. If this heading information is installed
and is valid, the WX-500 and KMD 150 will use it. In the absence of an
external heading reference, the KMD 150 will use GPS track to adjust
the position of the discharge points on the display during turns and
thereby keep all discharge points in the proper location relative to the
nose of the aircraft.
NOTE:
GPS track is only available if you are moving in excess of 3 knots.
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Rev 1 Mar/2000
KMD 150 Pilot's Guide