Table of Contents
Advertisement
RELEASED FOR THE EXCLUSIVE USE BY: AIRCRAFT ELECTRONICS ASSOCIATION
BENDIX/KING
just potentiometer. This is for final calibration of the omni system after install-
ing in aircraft. The range of the error potentiometer is approximately ±25°. It
should be noted that this potentiometer does not affect localizer centering.
The localizer centering potentiometer R227 is accessible from the front of the
indicator by removing the upper right mounting screw. Again the 2 1/2 inch
long adjustment tool is required.
2.3.2
CABLING
2.3.2.1
The length and routing of the external cables must be carefully studied and
planned prior to the installation. Avoid sharp bends and placing cables too
near the aircraft control cables.
2.3.2.2
Fabricate the external cables in accordance with the installation drawing that
fulfills the system requirement.
2.3.2.3
Avoid running the interconnect harness between the KI 208 and navigation re-
ceiver too close to any transmitter antenna coax cable.
2.3.2.4
Considerable savings of installation time can be realized by using the Burndy
crimping tool shown in
2.4
POST INSTALLATION CHECKOUT
An operational ramp test or performance flight test is recommended after installation
to insure satisfactory performance of the equipment in its normal environment.
2.4.1
RAMP TEST
2.4.1.1
Use VOR/ILS ramp generator IFR 401L or equivalent.
2.4.1.2
Set ramp generator to VOR, 90° TO. Set NAV receiver to VOR frequency.
Rotate OBS until the D-bar centers, with the To/From indicator reading TO.
The OBS should read 90° TO ±2°. Change the generator to 0° TO, center the
D-bar, and check the OBS reading for 0° TO ±2°.
2.4.1.3
If the error is greater than ±2°, VOR centering may be readjusted by R233 (be-
hind top left mounting screw) using adjustment tool P/N 088-00706-0000.
2.4.1.4
To adjust VOR centering, change the generator to 90° TO, center the D-bar,
and adjust R233 for 0° TO ±2°. Change the generator to 90° FROM, center
the D-bar, and adjust R233 for half the reading at 90° TO. Repeat adjust-
ments at 90° TO and 90° FROM until both are within ±2°. If large corrections
are required to center the needle the source of error may be exist in another
part of the VOR/LOC navigation system.
2.4.1.5
Change the generator to 0° TO, center the D-bar for 0° TO. Set OBS to 8° and
check for 4 ±1/2 dots deflection to the Left. Set OBS to 352° and check for 4
±1/2 dots deflection to the Right.
2.4.1.6
Rotate the OBS 360° and verify that the To/From flag changes state only at
270° ±30° and at 90° ±30° OBS position.
Rev 4, Aug 2002
Figure
2-3.
IM 006-00140-0004
KI 208, KI 209
Page 2-2
Hide quick links:
Advertisement
Table of Contents
