Teledyne C-2000 - Manual (Page 93)

75
(Rev. 8/04)
®
Symptom 12.
All handsets ring when air- craft is called.
13.
Ov
er time the v
oice audio
starts to break up,
gets static
in back-ground. Calls drop intermittently
.
Correcti
v
e Action
1.
An
Aircall Number is programmed into the air-
craft re
gister
. Handsets you do not w
ant to ring
must
be disabled.
2.
Program
Aircall Numbers into the station re
gister
for each handset.
1.
Most lik
ely there is a problem with the RF
cabling or an RF component,
i.e.,
duple
x
er or
antenna. a)
Using alcohol and a Q-tip,
clean and inspect all
coax connector ends. Replace,
tighten,
and
clean connectors.
b)
Ensure the tightness of all RF coax cable con- nectors.
The BNC and
TNC connectors con-
nected to the front of the
AR
TU and the
T
ype
N connectors on the duple
x
er and antenna
should be
fi
nger tight. (Do not use pliers of an
y
kind to tighten these connectors.) Using a 5/16
”
open end wrench,
ensure the tightness of
the tw
o SMA connectors on the duple
x
er
.
c)
Inspect antenna for cracks,
dents,
or debonding
from aircraft.
Remarks *
At each handset you do not w
ant to
ring,
P
ress
“9
”
for set up at main
menu. Press
“+
”
for more follo
wed by
“the maintenance passcode,
then
“+
”
(OK). Press
“4
”
(Phone #),
“2
”
(Aircalls),
“+
”
(More),
then
“2
”
(No).
*NO
TE:
Only one station uplink number may be enter
ed for eac
h handset.
*NO
TE:
Y
ou should not be able to pull out or
twist the coax cable when the connector is fully seated and tight.
*NO
TE:
Center pin of SMA connector
s must
extend a minimum of .06”
out fr
om
TEFLON.
C. Corr
ecti
v
e
Action Guide,
continued