Dynon Avionics SkyView System Installation Guide - Manual (Page 84)

SV-D700 / SV-D1000 / SV-D1000T Installation and Configuration
4-22 SkyView System Installation Guide - Revision S

Wire a serial transmit line from one display to the receive line on the external serial device.
If you have more than one SkyView display, make the same connection to all SkyView
displays.

Ensure there is a shared ground between the SkyView display and the external serial device.
If you have more than one SkyView display, make the same connection to all SkyView
displays.

Configure the serial port on the display appropriately under SETUP MENU > SYSTEM SETUP
> SERIAL PORT SETUP, SERIAL PORT x SETUP > TIS OUT (330 FORMAT).
USB Usage and Accessibility
It is useful to have the USB socket on the display’s wire harness accessible after
installation for file uploads and downloads.
The USB connector is used during the following operations:

System firmware updates

Configuration file uploads and downloads

Database updates
External Dim Control Connections
DIM INPUT (Pin 25) The backlight level on a SkyView display can be increased or decreased
using a control signal of 0 to 36 volts DC. See External Brightness Management to configure
brightness levels for specific voltages.
DIM OUTPUT (Pin 26) The DIM OUTPUT signal is an approx. 120 Hz (may change in future
firmware revisions) Pulse Width Modulation (PWM) signal directly proportional to the screen
brightness – 100% to 0.02%. This output is designed to directly control the dim level of devices
such as LEDs; a common use is for the back-lighting of switches in a panel so that they dim at
night in conjunction with SkyView’s automatic dim levels.
The DIM OUTPUT signal is an open collector to ground - it acts as a switch to ground, and does
not source any power itself. Pin 26 can sink a maximum current of 120mA and a maximum
voltage of 40V. The DIM OUTPUT signal is not analog and cannot be used to control the dim
level of devices that expect 0-5V, 0-12V, or a resistance as their dimming input.
Do not connect the DIM OUTPUT signal from multiple SkyView screens in parallel. The DIM
OUTPUT signals from each display is not synchronous, and this will lead to inconsistent
behavior.
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 generated by SkyView are not muted by ATC transmissions or other audio