System Q SIDE C - 24/01/05 Doc XCCT455
CCT455/7/9 Varifocal CCTV Dome Camera INSTRUCTIONS
System Q E-mail support@systemq.com or fax support 01246 222 888
The CCT459 (High Res Col our) has four dipswitches.
Switch 1 Iris Control (Auto Iris=ON, ESC=OFF)
Switch 2 Back Light Compensation (ON= BLC ON)
Switch 3 Automatic Gain Control (ON = ALC ON)
Switch 4 FL/Flicker less (ON = FL on)
1. Automatic Level Control / Electronic Shutter Control (ALC / ESC)
This must be set to ALC when using these cameras with the standard Auto Iris Lens. If switched to
ESC, the camera will sti ll function but the picture quali ty will be errat ic being too bright or too dark with
poor colour reproduction as both the cam era and the lens would be fight ing to compensate for v arying
light levels.
(The Elect ronic shutter control is driven from the electronics on the pcb, t he ALC relies on the
functioning of t he Auto Iris in t he lens.)
2. Back Light Compensation (BLC).
BLC helps the camera when it is looking at a bright object such as an external window. The BLC tries to
compensate f or the bright part of the image so that some of t he surrounding area is not too dark.
It is recommended always to be set to on.
3. Automatic Gain Control (AGC)
When t he light f alling on to an i maging dev ice reduces to a certai n level , there may be i nsuffi cient to
create a full level video signal. The AGC acts to increase the amount of amplification in these
conditions t o bri ng t he signal up t o the requi red level. As well as amplif yi ng the v i deo signal, additi onal
noise can be i ntroduced, and the signal to noise ratio reduced. The result can lead to a v ery muchdegraded signal and poor picture on the monitor.
4. Flicker - less Function (FL)
Set the dipswitch 4 FL to ON to enable the flicker - less function, when in this mode, the AES/OFF
switch is automat ically disabled.
Someti mes the picture can be seen to ‘Flicker’ or ‘Pulse’, setting thi s switch t o O N will prevent this
problem.
Lens Adjustment
When setting the l ens to suit your particul ar appli cation, remov e the cov er and inner lens surround, loosen
off the locking screws and alter t he focal / Tel e/wide adjustments. W hen the desired picture is achiev ed
tighten the locking screws and replace the covers.
There are two secti ons to the lens that can be m odified, t he focal adjustm ent that allows you to alter the
position of the focal lens in order to f ocus the lens. The Tel e/wide adjustment allows you to achiev e the
required angl e. The Tel e/wide adj ustment wil l ‘zoom’ into or away from t he object i n the pict ure, dependi ng
on how much of the area is required to be in view.
TIP: W hen you are setting up the cameras on site it pays to have a test moni tor with you so that
whilst you are up ladders to can position the lens without having to go up and down to the monitor
to check on the camera setting. CCT 020 4” LCD Test Monitor or the CCT021 6.8” LCD Test Monitor