NA MultiFlash Series, Руководство пользователя

Страница: 23 / 30

APPENDIX
DMX
PRIMER
There are 512 channels in a DMX-512 connection. Channels may be assigned in any manner. A fixture capable
of receiving DMX 512 will require one or a number of sequential channels. The user must assign a starting
address on the fixture that indicates the first channel reserved in the lighting console. There are many different
types of DMX controllable fixtures and they all may vary in the total number of channels required. Choosing a
start address should be planned in advance. Channels should never overlap. If they do, this will result in erratic
operation of the fixtures whose starting address is set incorrectly. You can, however, control multiple fixtures of
the same type using the same starting address as long as the intended result is that of unison movement or
operation. In other words, the fixtures will be slaved together and all respond exactly the same.
DMX fixtures are designed to receive data through a DMX Chain. A DMX chain connection is where the DMX
OUT of one fixture connects to the DMX IN of the next fixture. The order in which the fixtures are connected is
not important and has no effect on how a lighting console communicates to each fixture. Use an order that
provides for the easiest and most direct cabling. Connect fixtures using shielded two conductor twisted pair
cable with three pin XLR male to female connectors. The shield connection is pin 1, while pin 2 is data Negative
(S-) and pin 3 is data positive (S+). Company NA carries 3-pin and 5-pin XLR DMX compliant cables.
G
ENERAL MAINTENANCE
To maintain optimum performance and minimize wear fixtures should be cleaned frequently. Usage and
environment are contributing factors in determining frequency. As a general rule, fixtures should be cleaned at
least twice a month. Dust build up reduces light output performance and can cause overheating. This can lead
to reduced lamp life and increased mechanical wear. Be sure to power off fixture before conducting
maintenance.
Unplug fixture from power. Use a vacuum or air compressor and a soft brush to remove dust collected on
external vents and internal components. Clean all glass when the fixture is cold with a mild solution of glass
cleaner or isopropyl alcohol and a soft lint free cotton cloth or lens tissue. Apply solution to the cloth or tissue
and drag dirt and grime to the outside of the lens. Gently polish optical surfaces until they are free of haze and
lint.
The cleaning of internal and external optical lenses and/ or mirrors must be carried out periodically to optimize
light output. Cleaning frequency depends on the environment in which the fixture operates: damp, smoky or
particularly dirty surrounding can cause greater accumulation of dirt on the unit’s optics. Clean with soft cloth
using normal glass cleaning fluid. - always dry the parts carefully. – clean the external optics at least every 20
days. Clean the internal optics at least every 30 / 60 days.
23