Northern Airborne Technology LD08 - Manual (Page 27)

SM15 Rev. 4.00 LD08 Lamp Dimmer Manual
Nov 21, 2003 Page 3-1
ENG-FORM: 806-0104.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 3.0 Operation
3.1 General
The LD08 provides dimming and lamp test functions for up to eight lamp lines (normally
annunciators for navigation system operation). It can drive the eight lamps to either a
fixed night dim value (typically 12-14 Vdc), or to accommodate varying light conditions it
can be installed with a small dimmer control to allow adjustment of these lamps over the
range of approximately 8-19 Vdc.
In addition to providing dimming, the LD08 also provides a central lamp test function,
driving all lamps full on, to test for proper operation.
3.2 Operation
The LD08 Lamp Dimmer has no normal user operational aspects. During
installation, or if the unit has been exchanged, it may be a requirement to change
internal adjustments. This should be done ONLY BY FULLY QUALIFIED PERSONNEL.
End of section 3.0