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2. Control
Ask: the single dome camera cannot be controlled by keyboard or other control equipments?
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First check if control line RS-485 is well connected to designed position with right direction.
Then check the control equipment and dome control protocol, baud rate and address. If it still
can not be controlled, use elimination to check whether the control equipments or camera has
troubles.
Ask: single camera can be controlled but multi-cameras cannot be controlled
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It may be caused by reflection of signal RS-485. Merge a 120 ohm resistance to the RS-485
anode and cathode control wires of the farthest camera.
Ask: other controls are normal except it can not rotate at a direction.
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First check if any mechanical troubles without electrifying. If it can run well, check if the belt
broke or loose. If yes, it is caused by the control decode board troubles.
Ask: the camera automatically rotates after electrifying.
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First check if the electrifying mode is auto scan mode; if not, firstly cut RS-485 control lines
to see if it happens. If stopping, it may be caused by the scrambled code from controller or
disturb to RS-485 lines.
Ask: the provided keyboard software can control, but the DVR cannot control or only can control
some?
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DVR control protocol is not agreed with our company or the function is not completed.
Ask: why does the same dome have different control speeds at different hard disk video recorder?
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Speed command codes in control software of DVR are different.
Ask: DVR cannot control speed of camera
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Control command code of control software in DVR only has a fixed speed.
Ask: the camera rotates disorderly. The image is blackish or whitish.
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There is interference to RS-485 lines, check the equipments in the lines such as optical
transmitter and receiver.
Ask: the dome camera can be controlled normally in the morning and evening, but it cannot be
controlled at the noon of summer.
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High temperature may cause lower down of control line anti-jamming or change to control
equipment and CMOS chips parameters to make troubles. Check if the temperature is over than
the specified limit and the radiator fan.
Ask: camera continuously does self-check up after electrifying
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The supply voltage is too low or the power is not enough. Our matching transformer or above
2.5A 24VAC transformer are recommended. The installation distance is better no more than 30m
with 1 sq. mm diameter.
3. Installation
Ask: what kind of power supply is needed?
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24VAC, 2.5A above power transformer is recommended.
Ask: what is the MAX. Distance of 24VAC power wire and what requirements does it have to wire
materials?
