wiJAC-Txx Wireless Intercom System with Transceiver Connection
Operating Manual
Page 12
6.4.8
Loss of Audio
If there is no audio heard in the headset, check the PWR ON annunciator on the
JA66 Headset Adapters and the JA67 Intercom Adapter. If a unit is off, turn it on
and verify connection and operation.
If the battery charge is low, replace or recharge the batteries or remove the
wiJAC system.
If audio is unintelligible, discontinue use of the wiJAC system until
troubleshooting can be carried out.
If an aircraft system is experiencing a fault, turn off and remove the JA66
Headset Adapters and the JA67 Intercom Adapter and connect a headset directly
to the audio panel. Do not use the JA66 Headset Adapters and the JA67
Intercom Adapter if they appear to be the cause of the fault.
6.4.9
Battery Life
The operating duration of the
wiJAC
-Txx system with fully charged batteries
before battery replacement is required depends on the following factors:
•
Distance between Headset Adapter and Intercom Adapter:
The closer together the units are the lower the radio frequency (RF) power
required for connection. This will increase the battery life.
•
Obstacles between the Headset Adapter and Intercom Adapter (VOL):
Minimising the aircraft metal structures, human bodies, cargo and other
obstacles between the units will reduce the RF power needed for connection
and increase the battery life.
•
Charge capacity of the batteries installed:
The higher the capacity of the batteries, typically specified as 500 to 1000
mAh (milliamp-hours), the longer the battery life.
•
The type of batteries installed and the operating temperature:
During low temperature operation, rechargeable batteries will lose capacity.
When operating in low temperatures use alkaline batteries for a longer
battery life.
•
The phones volume level and usage rate:
The lower the volume level and the less often audio is output to the phones,
the longer the battery life.
