Front Music In Jack; Muting Inputs; Selectable Auto Mute (Music Only); Fail-Safe Operation - Dynon SV-INTERCOM-2S Installation And User Manual

4.5

Front Music In Jack

The SV-INTERCOM-2S has wiring provisions for a permanent stereo music source via its rear-
mounted wiring connector.
A music device can also be plugged in to the standard 3.5mm Music In jack on the front of the
intercom. When a device is plugged in to the Music In jack, it over-rides the permanent music
input.
4.6

Muting Inputs

Whenever a radio or other non-muting input has audio activity, music and muting input volume
is immediately decreased to near fully-muted so that you may hear important radio transmissions
or audio alerts. When audio from radios/non-muting inputs ceases for a moment (0.5 second),
volume levels are automatically restored gradually over the next second.
4.7

Selectable Auto Mute (music only)

Press the squelch knob to toggle whether or not music is muted by intercom conversation as
well as by non-muting input and radio activity. This allows you to set the music and aux muting
input to not mute as you sing along or occasionally chat over the intercom:
• When Auto Mute is DISABLED: Only audio activity from radios and non-muting inputs
will mute music.
• When Auto Mute is ENABLED: Audio from radios, non-muting inputs, and intercom
conversation will mute music.
4.8

Fail-safe Operation

When power is lost or the SV-INTERCOM-2S is powered off, the primary radio is connected
directly to the pilot's headset. If the pilot headset is a stereo headset, radio audio will only be
heard in one ear. Intercom conversation and audio from other radios and inputs (including music)
will not be heard when in this unpowered fail-safe mode.
4.9

Radio Push-to-Talk (PTT) Behavior and Priority

When the pilot or co-pilot presses a PTT switch, only the person pressing their PTT is heard
over the radio.
If the pilot and co-pilot PTT buttons are both depressed, the pilot PTT takes priority. Only the
pilot's voice is transmitted over the radio. Additionally, the pilot PTT will take priority from the co-
pilot even if the co-pilot PTT is already depressed.

4.10 Dual Radio Operation

If two COM radios are installed, an external switch selects which radio transmits when the PTT
switch is pressed. Use the radio volume control to determine which radio(s) is heard at any given
moment.
Page | 18 SV-INTERCOM-2S - Installation and User Guide, Revision B