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KRA 405B RADAR ALTIMETER INSTALLATION MANUAL
Page 2-17
006-10536-0010 Rev. 10 Oct/2005
2. A calibration in an excessively noisy environment will not be
accepted by the KRA 405B. A post calibration altitude of thir-
ty to one hundred feet indicates a failed calibration. If this
condition occurs, the calibration must be completed in a dif-
ferent location.
B. GENERAL
In most cases altimeter installations that closely follow the
suggestions of this manual will need no special equipment to check
the integrity of the system. The steps of Paragraph 2.6. C. KRA
405B RADAR ALTIMETER POST INSTALLATION TEST PROCEDURE are sufficient
to determine proper altimeter operation.
However, if more than one of the installation suggestions in this
document cannot be complied with, the probability increases that a
problem will exist.
In order to determine whether an altimeter installation problem does
exist, the tests in Paragraphs 2.6. C. KRA 405B RADAR ALTIMETER POST
INSTALLATION TEST PROCEDURE and D. TEST PROCEDURE can take the place
of a flight test.
Agencies that install many altimeter systems (including other
manufacturer’s equipment) will find these test procedures quite
helpful. For the majority of installation problems encountered, the
procedures in Paragraph 2.6. C. KRA 405B RADAR ALTIMETER POST
INSTALLATION TEST PROCEDURE should prove sufficient.
Before initiating the test, check the physical condition of the
units, cables, and the areas around the installations. Ensure that
all cable connections are correct and that all mounts and connectors
are secure.
C. KRA 405B RADAR ALTIMETER POST INSTALLATION TEST PROCEDURE
(USING MICROWAVE ABSORBER)
(1) Purpose of Test
The purpose of the following post installation test procedure
is to insure that the indicator needles will stow behind the
mask after the test button is pressed.