Vertical Phase Adjustment

NOTE: Use this procedure for 24 VAC operation only.

When using more than one camera power supply, a brief vertical roll may occur on the monitor when switching from one camera to another.

To eliminate vertical roll, reverse the 24 VAC connections on one camera. If both cameras are connected to the same transformer, this should solve the problem. If the problem still exists, adjust the phase control by synchronizing, or line-locking, the cameras to one another.

NOTE: When adjusting vertical phase, line sync (SW4-3) must be set to OFF for AC line lock.

Adjusting Vertical Phase

You may need two people when synchronizing the cameras: one at the camera, the other at the monitor to observe the vertical roll and the effect of any camera adjustments.

To synchronize the cameras:

1.Choose a reference camera to which all other cameras will be phased.

2.Select the camera to synchronize. Use buttons SW1 and SW2 to synchronize the camera to the reference camera (refer to Figure 10 on page 20). SW1 increases vertical phase; SW2 decreases vertical phase.

3.Each time an adjustment is made, switch back and forth between the camera you are adjusting and the reference camera. Repeat this process as many times as necessary until the roll between the cameras is no longer noticeable.

4.Adjust the phase of all other cameras by repeating steps 2 through 3. Always adjust to the reference camera selected in step 1.

NOTE: The preferred method for camera phase adjustment is to use a dual trace oscilloscope to align the vertical sync pulses of the reference camera to the selected camera(s).

BLEMISH DETECTION

If small white or color spots appear in the video image, one or more pixels on the camera imager may be defective. (This condition is common for both CCD and CMOS imagers.)

DN and CH Series cameras with auto iris lenses automatically detect and correct defective pixels during startup. Video turns on, then off, and then on again. If white or color spots still appear, you can correct the defective pixels manually.

CH Series cameras with ﬁxed iris lenses do not automatically detect and correct defective pixels. You can correct the defective pixels manually.

To manually correct defective pixels (refer to Figure 10 on page 20):

1.Cover the lens completely. Make sure no light can enter the lens.

NOTE: The mechanical iris lens aperture does not completely block the light.

2.Press and hold button SW3 for one second. The camera will ﬁnd and correct defective pixels. NOTE: Any defective pixels that cannot be completely corrected may still appear.

3.Release button SW3.

4.Uncover the lens for normal camera operation.

22	C3426M-A (5/07)

C3426M-A (5/07) specifications

The Pelco C3426M-A is a high-performance pan-tilt-zoom (PTZ) camera designed for versatile surveillance applications in a range of environments. Introduced in 2007, it has garnered attention for its combination of advanced technologies and robust build quality, making it an ideal choice for both indoor and outdoor security needs.

One of the key features of the C3426M-A is its 26x optical zoom lens. This powerful zoom capability allows the camera to capture high-quality images from significant distances, making it suitable for perimeter security, monitoring large areas, or focusing on specific objects or events. Coupled with advanced digital zoom options, the camera ensures that even fine details can be captured clearly without sacrificing image quality.

The camera utilizes Pelco’s proprietary technologies to enhance its performance in varying light conditions. With a wide dynamic range and low lux capabilities, it delivers exceptional image clarity in both bright and low-light environments. This adaptability is crucial for surveillance scenarios where lighting conditions can change rapidly.

In terms of build quality, the C3426M-A is designed to withstand harsh environmental conditions. Its rugged housing is weather-resistant, making it suitable for outdoor installations. This durability ensures reliable operation in challenging weather conditions, including rain, snow, and extreme temperatures.

The camera is also equipped with advanced motion detection and programmability features. Users have the ability to set specific areas of interest and configure the camera to respond to motion, which helps to minimize false alarms and optimize monitoring efficiency. The flexibility of programmable presets allows operators to focus on critical areas, enhancing overall surveillance strategy.

Networking capabilities are another highlight of the C3426M-A. Featuring support for various video formats, it easily integrates into existing security systems. The camera can be controlled remotely, allowing for real-time monitoring and adjustments from anywhere, which is particularly advantageous for large facilities or multi-site operations.

In summary, the Pelco C3426M-A (5/07) stands out as a reliable and sophisticated PTZ solution. Its powerful optical zoom, weather-resistant design, advanced imaging technologies, and robust networking capabilities make it an excellent choice for a wide range of security and surveillance applications. Whether for commercial, industrial, or institutional use, this camera offers the flexibility and performance required to meet modern security challenges.