Filter
Top Products
75
(Rev. 8/04)
®
Symptom
12. All handsets ring when air-
craft is called.
13. Over time the voice audio
starts to break up, gets static
in back-ground. Calls drop
intermittently.
Corrective Action
1. An Aircall Number is programmed into the air-
craft register. Handsets you do not want to ring
must be disabled.
2. Program Aircall Numbers into the station register
for each handset.
1. Most likely there is a problem with the RF
cabling or an RF component, i.e., duplexer 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 ARTU and the Type
N connectors on the duplexer and antenna
should be finger tight. (Do not use pliers of any
kind to tighten these connectors.) Using a
5/16” open end wrench, ensure the tightness of
the two SMA connectors on the duplexer.
c) Inspect antenna for cracks, dents, or debonding
from aircraft.
Remarks
* At each handset you do not want to
ring, Press “9” for set up at main
menu. Press “+” for more followed by
“the maintenance passcode, then “+”
(OK). Press “4” (Phone #), “2”
(Aircalls), “+” (More), then “2” (No).
*NOTE: Only one station uplink number may be
entered for each handset.
*NOTE: You should not be able to pull out or
twist the coax cable when the connector
is fully seated and tight.
*NOTE: Center pin of SMA connectors must
extend a minimum of .06” out from
TEFLON.
C. Corrective Action Guide, continued