Table of Contents
Advertisement
4.2.2
A n ten n a Co u pler I nst all ati on an d Co nn ect io n
Pe rfo rm th e follo w ing s tep s to i ns tall the A nt en na C ou pl er:
Note:
If te sti ng Lo w P ow e r P uls e- typ e Ra di o, s ee
S T E P
1.
P lac e t he A LT -9 00 0 w ith in ca ble le ng th of the a irc raf t un d er tes t ra dio a ltim e ter
an te nn as .
2.
C on ne ct the 2 0 f t Lo w L os s R F C oa x C a ble s to t he A LT -9 00 0 UU T :T X/U U T :R X
TN C c on ne ct ors .
3.
P erfo rm S e tup p roc e du re
4.
S ele ct the co rre c t se ct ion al po le l en gth s tha t a llow s up p ort of the A nt en na
C ou ple rs ov er th e a irc raf t ra dio a ltim et er a n ten n as . A ss em b le p o le s ec tio ns .
5.
M ou nt the A n ten na C ou p lers to th e e n d o f e ac h co m ple te d s ec tio na l p ole .
Note:
No te : T he co u ple r h as a de ca l w ith an a rro w on it. Whe n p ro pe rly in sta lled , t he
arr ow on th e c ou pl er s ho ul d b e p oin tin g F O RW AR D (to w ard th e n os e o f th e A /C ).
6.
P res s d o wn o n e a ch po le as se m bly u ntil the G as S ho ck c om p res se s an d l oc k th e
re tain in g c lam p . T he a m ou nt of co m pre ss io n s ho ul d a llo w the p ole to be ra ise d
int o p la ce w ith a 2 -3 : ga p be tw ee n the a nte n na co u ple r a nd th e R a dio A ltim e ter
A nte nn a .
7.
R efe r to
C oa x C a ble s as ind ica te d.
S T E P
8.
R ais e t he T X p o le a ss em b ly an d pla ce th e ( UU T :T X) An te nn a Co u ple r d ire ctly
un de r th e TX R ad io A ltim e ter A nte n na . Wh e n the po le is ve rtic al, re lea s e the G a s
S ho ck re tain in g c lam p to a pp ly t he pr elo ad e d u pw a rd pr es su re on th e A n ten n a
C ou ple r.
Note:
Do n ot re- tigh te n t he re tain in g c la mp o n the g as sh oc k.
22149669 / Rev. 001
April, 2022
T es tin g
P R OC E DU R E
(4.
3).
F ig. 4-
11. C on ne c t th e A n ten na C o up ler 's T N C co nn ec to rs t o t he R F
F ig. 4-1 1 A LT -9 00 0 RF C on n ec tion s
ALT-9000 Radio Altimeter Test Set Operations Manual
.
S ec tio n: 4.2
P R O CE D UR E
.4.
FINAL
4-4
Advertisement
Table of Contents
