City Theatrical Inc. 4160 Projector Dowser Userʼs Manual
2
Welcome
Thank you for using the City Theatrical
Part # 4160
Projector Dowser. Every effort has been
made to answer your questions in this manual, but if you have any questions not addressed
here, or you want to discuss a special application, please feel free to contact us directly at City
Theatrical.
Overview
The City Theatrical 4160 Projector Dowser is a DMX 512 controlled mechanical dowser for use
with digital projectors. The 4160 Projector Dowser changes “video black” to a real blackout by
positioning a large flag in front of the projectorʼs lens.
Cautions
•
The City Theatrical 4160 Projector Dowser is intended for use only by qualified
professionals. Connection, installation and hanging of this equipment must be performed
in accordance with all pertinent local, regional, and national safety codes and regulations.
•
The City Theatrical 4160 Projector Dowser is intended for indoor use only.
•
Keep the unit dry. Do not operate the unit if it gets wet.
•
Do not operate in excessive heat. Maximum ambient operating temperature 40°C.
•
Be sure installation provides adequate ventilation and allows free airflow.
•
There are no user-serviceable parts inside. Refer to qualified service personnel.
Connection
Connect the 4160 Projector Dowser via industry standard
DMX/accessory-power four pin XLR cables, like those used with
color scrollers.
When used with the optional CTI # 2199 Power Supply, the CTI 4160
Projector Dowser can be connected to a DMX controller using a
standard five pin XLR DMX cable from the controller to the Power
Supply control input.
Power Supplies
The 4160 Projector Dowser can be used with the City Theatrical # 2199 Power Supply. The
Projector Dowser is also compatible with Wybron Forerunner™, Chroma Q™, Rainbow™,
Spectra Q™, and Rosco PS™ power supplies. The 4160 Projector Dowser is not compatible
with Wybron Coloram™ power supplies.
DMX Operation
The 4160 Projector Dowser responds to DMX
commands as follows:
•
DMX level 00 (OFF) = Home position
•
DMX level 50 (50%) = 45° counter-clockwise from
home position
•
DMX Level FF (100%) = 90° Counter-clockwise from
home position
XLR Pin Signal
1
Common
2
DMX -
3
DMX +
4
+24VDC
