Troubleshooting - Vertex Standard VXA-220 Operating Manual

Q
When connecting the CT-96 headset cable between
the radio and a headset, the red transmit LED on
the radio turns on and the radio cannot be operated.
Can I purchase the optional PTT Switch from Ver-
tex Standard?
Will my headset work with this radio?
46
T
ROUBLESHOOTING
A
This happens when the connector on the CT-96 headset cable is simply
pushed into the MIC/EAR jack.
The jack must be screwed into the MIC/EAR jack to make proper contacts
within the radio.
Contact your Aviation dealer for details on purchasing an aftermarket Push-
To-Talk switch.
The CT-96 headset cable is made to operate with most headsets; however
to be concretely sure check with the headset manufacturer providing the
wiring shown below. Please confirm the connections and connector sizes
are correct.
Ground
MIC
Headset Note:
Earphone (speaker) Impedance: 8 Ω or above
PTT
MIC Impedance: 150 Ω ±20%
Speaker
PTT pressed: Ground
3.5 mm Plug
PTT not pressed: Open
Speaker
PJ-055
(accepts 0.25" phone plug)
Microphone
PJ-068
(accepts 0.206" phone plug)
VXA-220 P VI O
RO
M
PERATING ANUAL