TM106601_(7/01) 2-
14
USE OR DISCLOSURE OF DATA CONTAINED ON THIS PAGE IS SUBJECT TO THE
RESTRICTION ON THE TITLE PAGE OF THIS DOCUMENT
.
C
O M M A N D
S
Y S T E M S
D
I V I S I O N
Do not leave function switch in the test position
for more than 10 seconds or antenna azimuth
drive will engage.
(f) Unlock the antenna azimuth drive by disengaging the retaining pin.
2.7.4.3 Roll Calibration Check Procedure
(a) Set the ROLL-TRIM (recessed pot below the SRCH button) potentiometer on the Radar Control
Panel to midrange (see Figure 1.6-3 for location).
(b) With the Function Select Switch on the Radar Control Panel in the STBY position, manually
position the antenna to 60° clockwise and lock the azimuth drive by inserting the retaining pin
into the 60° CW slot.
(c) Position the aircraft vertical gyro to zero degrees pitch and 30° right roll. The antenna elevation
position should be 26° up. If not, adjust the ROLL gain potentiometer on the antenna drive
assembly for 26° deflection.
(d) Position the aircraft vertical gyro to zero degrees pitch and 30° left roll. The antenna elevation
position should be 26°
±
1.5° down.
(e) Momentarily (10 seconds maximum) rotate the function switch to the TEST position on the
Radar Control Panel. The antenna should return to 0
°
elevation position. Return the function
switch to the STBY position.
Do not leave function switch in the test position
for more than 10 seconds or antenna azimuth
drive will engage.
(f) Unlock the azimuth drive by disengaging the retaining pin. Store the retaining pin for future
use.
CAUTION
CAUTION
