VTC-C770DN
7
1. Point the camera at an object with sufficient contrast. The distance to the object should be longer than
1,000 x the focal distance.
2. Open the iris on the lens
3. Set the focus of lens so that the distance at the lens is close to infinity but not to exact infinity position.
4. Loosen Back focus Adjustment Lock: Screw one~two turns
on the camera with industrial “+” driver
5. Rotate Back Focus Adjustment until the optimum focus is achieved.
6. Tighten Back focus Adjustment Lock Screw
again.
7. Trim the focus precisely at lens if necessary.
Setting for lenses with a variable focal distance (zoom):
If the focus changes as the focal distance changes, please proceed as follows:
1. Point the camera at an object with sufficient contrast at a distance of approximately 2 meters
2. Open the iris on the lens
3. Set the maximum focal distance (Tele) at the lens
4. Set the optimum focus with the focus ring
5. Set the smallest focal distance (wide angle)
6. Loosen Back focus Adjustment Lock.
Screw one~two turns on the camera with the industrial “+” driver
7. Adjust Back Focus Adjustment until the optimum focus is achieved. Steps 3,4,5 and 7 may need to be
repeated several times to obtain the best results
8. Tighten Back focus Adjustment Lock Screw again
5.3. Installation
The camera has a 1/4
” thread insert on its top and bottom sides for mounting the camera to a tripod, wall
or ceiling with a corresponding mount.
5.4 Commissioning
• First, connect the power supply to the power terminal on the rear panel of camera
• Second, plug the power adaptor to the main supply
•
ⓒ
Power indicator LED will be lit
• The camera is ready for operation
5.5. Power Supply Connections
Camera can work with either 24VAC or 12VDC, dual voltage power. It does NOT require the polarity-
matched connection for 12VDC supply. Primary and secondary grounds are completely isolated to avoid
the possible ground-loop problems. Its excellently wide operating voltage range of 10.5V-30V for DC and
12-28.8V for AC gives extra flexibility at the installation.
