Tungsten Carbide Straight Knives Carbide Straight Knives ,Hard Metal Special Straight Blades,Tungsten Carbide Straight Blades ,Cemented Carbide Straight Blades Zhuzhou Jingfeng Carbide Tools Co., Ltd , https://www.zzjfcarbide.com
Anti-theft alarm system failure phenomenon and troubleshooting method summary
The burglar alarm system does not know how to start? Where should I check for faults? This paper summarizes the common troubleshooting methods for burglar alarm systems.
First, the central system failure
1. The central machine cannot receive all the user alarm information reasons?
Possible reasons: the telephone line interference is too large, the telephone line is noisy, the telephone line is short-circuited, the circuit is broken, the intrusion switch on the telephone is turned on, the communication failure of the telecommunications bureau, the communication programming of the host alarm center is wrong, the serial port of the central software is closed, and the serial line is closed. The connection is incorrect, the serial port is damaged, and the fault of the computer itself may cause the central machine to receive no alarm information.
Remedy: Check if there is any short circuit or open circuit on the telephone line, turn off the anti-theft switch on the telephone, check whether the central communication programming of the host computer is correct, including (central telephone number, central communication level, central communication format, user number, Report options, etc.); open the serial port on the center software, connect the serial cable correctly, check if the serial port interface is damaged; check if the computer works normally. Check if the center software is a trial version and check if the trial expires from the system log of the software.
2. The reason why the center machine receives the alarm information, but cannot pop up on the software?
Possible cause: The user information on the central software does not exist, the serial port is closed, the serial cable connection is incorrect, and the serial port is damaged. The central device may receive the alarm information, but it cannot be ejected on the software.
Remedy: Add user information on the center software, open the corresponding serial port, connect the serial cable correctly, and check whether the serial cable interface is damaged.
3. After the central machine receives the alarm information, can the alarm not be up/down?
Possible causes: The central telephone line is too much interference, the telephone line is short-circuited, the circuit is broken, and the communication of the telecommunications bureau is faulty. If the center software does not correctly fill in the forwarding number, the center machine may not be able to upload/subscribe after receiving the alarm message.
Remedy: Check if the telephone line interference is too large, whether the telephone line is short-circuited, open circuit, and correctly fill in the forwarding number on the center software.
Second, the host system failure
1. After the host is armed or forced to arm, the wired front end is triggered, but the reason is not alarm?
Possible cause: The connection between the wired front end and the host is incorrect, the line is short-circuited, the circuit is broken, the front-end power supply voltage is insufficient, the tail-end resistance is not connected, the connection is incorrect, and the zone attributes are not written or written incorrectly, which may cause the host to be armed before the cable is triggered but No alarm.
Remedy: Check the connection line between the wired front end and the host correctly, check if the tail end resistance is not connected or connected incorrectly, use the multimeter to test whether the line is short-circuited, open circuit, whether the front-end power supply voltage is stable (not lower than 9V), etc. If the programming error is correct, the properties of the wired front end should be correctly written.
2. After the host is armed, the wireless front end is triggered, but the reason is not alarm?
Possible cause: The battery of the wireless front end is insufficient, the wireless front-end learning code is not correct, or the garbled code is learned. The wireless front-end does not program the zone attribute of the zone after learning the host, or the zone attribute is incorrectly written, and the distance between the wireless front-end and the host is Exceeding the rated emission distance, the metal object between the wireless front end and the host is blocked, which may cause the wireless front end to be triggered after the host is armed, but there is no alarm failure.
Remedy: Replace the battery, re-code the wireless front-end and the host, correctly program the zone of the host that the wireless front-end learns, shorten the distance between the wireless front-end and the host, and consider shielding if there is metal barrier. Re-adjust the wireless front-end installation location.
3. What is the reason why the host does not receive high frequency signals? (including remote control and wireless converter)
Possible cause: The remote control battery is low or the converter is not powered. The wireless code of the remote control and wireless converter is not learned into the host, or it is too far away from the host. The high frequency of the host cannot be decoded, etc., which may cause the host to receive no high frequency. signal.
Remedy: Replace the battery to connect the power supply, or change the remote control test, correctly program the learning wireless code, shorten the distance test between the remote control and the wireless converter and the host. If multiple remote controllers are used, the host height is high. There may be problems with frequency reception. It is recommended that the product be sent back to the ideal technology for professional equipment inspection.
4. What is the cause of the host's false positives?
Possible cause: The possibility of host false positive is very small, because the host is only a signal receiving processor, and even if there is a false positive, it is mostly because of the front-end detector. Unless the voltage fluctuation is too large, it may cause the host to misreport, but the design of the god eye controller in the voltage regulator circuit is very fine, so the probability of the host false alarm is very small, please check the front end when a false alarm occurs. The reason for the detector.
Remedy: First confirm that the zone is false positive, and then adjust the detector to the right.
5. Why does the host make a call for no reason during normal use?
Description: The prompt tone of the host can be divided into alarm tone, fault prompt tone, arming exit delay tone, and alarm entry delay tone.
Remedy: When the user makes a call in the reaction host for no reason, please install the engineering manufacturer to confirm the sound of the sound emitted by the host, and then check the right, the general user does not issue any instructions to the host. The prompt tone that is heard is mostly the sound that is emitted when the host detects the fault. Please confirm it and make the corresponding exclusion.
6. After the host connects to the external alarm, but the external alarm has no sound when the alarm occurs?
Possible cause: the positive and negative poles of the connection between the siren and the main unit are reversed, the connection line is short-circuited or short-circuited, and the output voltage of the main unit is insufficient (about 12V). The external alarm output program of the main unit is not programmed or programmed incorrectly, which may lead to external connection. The siren does not output.
Remedy: Check whether the line connected by the siren is completely normal. When the host is in alarm, use the multimeter to test whether the external alarm interface of the host has a voltage output of about 12V. If there is no output, the host may not be programmed into the siren output program. Please edit the program correctly. If the above operations are correct, the host still needs to change the alarm number or change the host test when the alarm is still not output.
7. Why not communicate with the personal phone after the host alarm? (mobile phone, landline, etc.)
Possible causes: excessive interference on the telephone line, short circuit of the telephone line, disconnection, telephone number of the personal communication during the programming process, communication format, communication level, etc. may not be programmed or programmed incorrectly. The landline on the telephone line connected to the host may be turned on. The function of playing, etc. may cause the host to not communicate with the personal telephone after the alarm.
Remedy: Check if the telephone line is too much interference, check if the telephone line has a short circuit, and the open circuit problem exists. Check whether the telephone line of the connected host needs to add the dial code before dialing the outside line. If necessary, please enter the alarm dialing number. Enter the code correctly, if not, consider re-programming the personal communication phone number, personal communication level, personal communication format program.
8. Why is the communication center not calling after the host alarm?
Possible causes: excessive interference of the telephone line causes data transmission failure, short circuit of the telephone line connected by the host, open circuit, central communication telephone number during the programming process, communication format, communication level, user number error or not fully programmed, etc. Causes the host to not call the communication center after the alarm.
Remedy: Check if the telephone line has a short circuit, open circuit, correctly write the center communication telephone number, center communication level, central communication format, user number. If all of the above are normal, it may be caused by excessive interference of the telephone line. Since the central communication is data transmission, it is different from the general voice transmission. Therefore, if the interference of the telephone line is too large, the communication may be unreliable. Do the following tests and treatments: 1. Listen to the handset's handset for noise. If there is obvious noise, you should first find a communication company to solve it. Otherwise, the host will transmit data incorrectly due to excessive interference on the telephone line. 2. Use the multimeter DC voltage file to measure the following parameters of the telephone line: a. No-load voltage: When the handset is not picked up, measure the DC voltage on the telephone line to see if it is 43~53 volts. b. Off-hook voltage: Pick up the handset handset and measure the voltage on the telephone line to see if it is 6~10 volts. c. Connect the resistance voltage: connect a 300 ohm resistor on the telephone line and measure the DC voltage on the telephone line to see if it is 6~12 volts. After the test, the following processing is performed according to the test result: a. If all the voltages tested meet the requirements, the line is normal, and a host can be replaced. (The host must be in the company's office has actually tested the communication to the center is very reliable, otherwise it may cause misjudgment, take a lot of roads); b, if the voltage is not normal, but not a lot, can be connected in series on the phone line 100, 200 or 300 ohm (1/4 watt) resistance test; c, if the voltage is not normal, and exceeds too much, or after the test by B method does not solve the problem, please your host with the test parameters The records are sent back to our company. Our technical engineers will specifically modify the host circuit parameters based on the subscriber's telephone line parameters to accommodate the telephone line;
Third, the front-end detector:
1. Guardrail (HL-2, HL-3, HL-5)
a. After the guardrail is connected to the host, the host is armed but the guardrail is not alarmed, or the host cannot be armed because of the fault in the zone.
Possible reasons: there is a barrier between the two ends of the guardrail, the connection between the guardrail and the main unit is wrong, the tamper switch of the guardrail is not closed, the line is short-circuited, the circuit is broken, the power supply voltage is insufficient, and the fence attribute of the guardrail is not programmed. During the programming process The prepared zone attribute has errors and so on.
Remedy: Correctly connect the line and tail resistance between the guardrail and the host (the connection and size of the resistor depend on the host used), check the line for short circuit, open circuit, and test the supply voltage of the guardrail is greater than 9V. Under the premise that the tamper switch is closed, check whether the alignment indicator on the transmitter end is off, blinking or long-term is not normal, and correct the function of the guard zone of the guardrail.
b. During the initial installation and debugging process, the guardrail does not stop alarming when the host is disarmed, and the reason why the alarm cannot be disarmed?
Possible cause: The guardrail is in an open state and the zone attribute is set to a 24-hour zone.
Remedy: Check the reason for the opening of the guardrail and correct the reason for it, and modify the protection zone attribute of the guardrail into a common defense zone.
c. Why is the alignment indicator of the guardrail blinking or long?
Possible cause: The synchronization cable is connected incorrectly, the receiving end is not aligned with the transmitting end, the receiving end and the transmitting end are too far apart, there is a barrier in the detecting area, the power supply voltage is insufficient, and the tamper switch of the receiving end is not closed.
Remedy: Connect the synchronization cable correctly, check whether the tamper switch is closed, adjust the angle between the receiving end and the transmitting end to make it align, and ensure that the power supply voltage is above 9V.
d. Why is the false alarm of the guardrail?
Possible causes: The power supply voltage fluctuates too much, the environmental causes, the line water inflow causes intermittent short circuit, and the guardrail itself.
Remedy: Ensure that the power supply voltage is above 9V, check whether the line is normal, and replace the falsely reported guardrail installation position with the guardrail installation position that has not been misreported, to confirm whether it is the environmental cause or the reason of the guardrail itself, and then make Processing accordingly.
2, probe (wired, wireless)
a. After the probe is connected to the host, the host is armed but the trigger does not alarm or the host is unable to be armed due to a fault in the zone.
Possible cause: The connection between the wired probe and the host is wrong, the tamper switch of the probe is not closed, the line is short-circuited, the circuit is open, the power supply voltage is insufficient, the probe's zone attribute is not programmed, and the zone attribute written during the programming process is incorrect.
Remedy: Connect the line and tail resistance between the probe and the host correctly (the connection and size of the resistor depend on the host used), check the circuit for short circuit, open circuit, test the supply voltage of the probe is greater than 9V, Check that the probe's alarm indicator is off when the tamper switch is closed, and re-program the probe's zone properties correctly.
b. During the initial installation and debugging process, the probe does not stop alarming when the host is disarmed, and the reason for the alarm cannot be disarmed?
Possible cause: The probe is in an open state and the zone attribute is set to a 24-hour zone.
Remedy: Check the open reason of the probe and correct the cause, and modify the fence attribute of the guardrail into a common zone.
c. Why is the probe false positive?
Possible causes: The passive probe detects the temperature difference of the environment and generates an alarm. If the sensitivity is improperly adjusted, the temperature difference of the detection environment may be bad, which may cause the probe to have a false alarm.
Remedy: Check the line for intermittent short circuit caused by water ingress, adjust the sensitivity and installation position properly, check if the deviation of the supply voltage is too large, and replace the falsely reported probe installation position with the probe installation position without false alarm. In this way, confirm whether it is the environmental cause or the probe itself, and then deal with it accordingly.
d. After the wireless probe is installed, why does the host arming the trigger probe not alarm?
Possible causes: The battery is low, the wireless code is incorrect or has not been written. The zone attribute was incorrectly written or not programmed during programming. It is possible that the host arming trigger probe does not alarm after the probe is installed.
Remedy: Check if the battery voltage is normal. If it is not normal, replace the battery and reprogram the wireless probe and program the zone properties.
e. The trigger indicator of the probe flashes, and the host also sends out the fault tone.
Possible cause: Wireless probe battery undervoltage
Remedy: Replace the probe battery
3. After the wireless door magnetic a and the magnetic door are installed, why should the host be armed to prevent the alarm from being triggered?
Possible causes: The battery is low, the wireless code is incorrect or has not been written. The zone attribute was incorrectly written or not programmed during programming.
Remedy: Check if the battery voltage is normal. If it is not normal, replace the battery and reprogram the wireless door magnet and program the zone properties.
b, the reason for wireless door magnetic false positives?
Possible cause: The installation gap between the magnet and the main board is at the edge of the alarm.