117-00008 Rev 3.0 Flightcell® DZMx Installation Manual
Page 33 of 75
Effective Date: 18 February 2022
External Backlight Control from a Dimmer
Wiring the external dimmer control
An external dimmer control is connected
»
On the DZMx: To General Purpose Input 5 (military D38999 pin 52 or civilian DB25 pin 15)
on the DZMx.
»
On a remote head: Direct to the dimmer control input (pin 10).
To Test External Lighting Input
First, ensure the dimmer lighting control input is working correctly as follows:
»
Enter the ‘Head Menu’
by pressing the
*
key for 2 seconds.
»
Select
Advanced > Head Diagnostics
»
Adjust the dimmer control through its full range and observe the 'Input:' value changing, it
should swing between approximately 0 and 3200 for a nominal input range of 0 to 28
volts, however a smaller range may be used
External Lighting Control Modes
There are a range of ways an external dimmer control can operate. The DZMx has several modes
designed to provide for the different options.
»
External lighting mode Day-Night
»
Variable Night
–
backlighting is calibrated for night only
»
Variable Night/Fixed Day
–
backlighting varies during night but switches to fixed level
during the day, when the dimmer control is rotated below a detent.
»
External lighting mode Night-Day
–
Variable Night and Variable Day, transitioning at a
designated input threshold.
