SV-D700 / SV-D1000 Installation and Configuration
4-16 SkyView System Installation Guide - Revision K
System firmware updates
Configuration file uploads and downloads
Database updates
External Dim Control Connection
Users may control the backlight level on a SkyView display using a compatible external control
signal. The external dim input on pin 25 on the display’s D37 is compatible with a 0 to 36 volt
DC control signal.
The external dim output on pin 26 is an open-collector PWM output. This output is currently not
supported. A future firmware update will enable this capability.
Audio Output
Audio Output Electrical Connections
Dynon recommends that SkyView’s audio outputs be connected to an unmuted
input on your audio panel or intercom. When connected this way, critical audio
alerts are not muted by ATC transmissions or other audio events that could cause
SkyView’s audio to be suppressed if it were connected to a muting input.
This output cannot be hooked in parallel with a radio to a headset. Doing so will
significantly reduce the volume of the radio output, possibly to the level that it is
not usable. An intercom or audio mixer is required to utilize this output.
The audio outputs on pins 13 and 31 (left and right, respectively) of the display’s D37 connector
can drive audio panel or intercom auxiliary inputs. When interfaced with such devices, they can
generally be used with any input designated as an auxiliary input without any external resistors
or other components needed between the SkyView and the intercom.
Use left and right audio outputs for stereo mode. If the audio panel or intercom only supports
mono input, short the left and right audio outputs together and connect them to the mono
input on the device. To minimize noise, ensure that your SkyView ground and intercom or audio
panel ground are directly connected together, even though they nominally share a common
ground via other aircraft wiring (audio ground is pin 30 on the D37).
If there is more than one display on a SkyView network and you want to connect the displays’
audio outputs to the same audio panel input for redundancy, electrically short the respective
left and right outputs together for stereo mode (i.e., left-to-left and right-to-right) or connect all
audio outputs together for mono mode. The same rule applies for audio grounds.
Audio output volume will be controlled via the interface on a SkyView display, so no external
hardware components are required. The audio output from SkyView has a maximum output of
10V p-p with 50 ohms of source impedance.
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