Maxtor 4 CH user manual PIN 7. External Alarm NC, PIN 8. External Alarm no, PIN 9. GND

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PIN 1. RS232-TX : RS-232

DVR can be controlled remotely by an external device or control system, such as a control keyboard, using RS- 232 serial communications signals.

PIN 2. RS232-RX : RS-232

DVR can be controlled remotely by an external device or control system, such as a control keyboard, using RS- 232 serial communications signals.

PIN 3, 4, 5, 6 ALARM INPUT

To connect wire from ALARM INPUT (PIN 3, 4, 5, 6) to GND ( PIN 9 ) connector, DVR will start recording and buzzer will be on. When alarm has been triggered, signal becomes “Low”, and it will stop all alarm activities. Under normal operation, signal remains “High”.

PIN 7. EXTERNAL ALARM NC

Under normal operation COM connect with NC and disconnect with NO. But when alarm triggered, COM disconnect with NC, and connect with NO.

PIN 8. EXTERNAL ALARM NO

Under normal operation, COM will disconnect from NO. But when Alarm triggered, COM will connect with NO.

PIN 9. GND

GROUND

PIN 10. RS485-B

DVR can be controlled remotely by an external device or control system, such as a control keyboard, using RS485 serial communications signals.

PIN 11. RS485-A

DVR can be controlled remotely by an external device or control system, such as a control keyboard, using RS485 serial communications signals.

PIN 12. DISK FULL (OUTPUT)

When HDD is full, it sends a signal to trigger next DVR record mode, if you install another DVR. Under normal operation, the signal remains “High”. But when disk full, DVR will send the “Low” signal.

PIN 14. ALARM RESET (INPUT)

To connect wire from ALARM RESET ( PIN 14 ) to GND ( PIN 9 ) connector, it can disable ALARM. An external signal to ALARM RESET ( PIN 14 ) can be used to reset both ALARM OUTPUT signal and DVR’s internal buzzer. When alarm has been triggered, signal becomes “Low”, and it will stop all alarm activities. Under normal operation, signal remains “High”.

PIN 15. EXTERNAL ALARM COM

Under normal operation COM connect with NC and disconnect with NO. But when alarm triggered, COM disconnect with NC, and connect with NO.

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Contents CH Digital Video Recorder Page Table of Contents Advanced OperationFeatures Package ContentInstallation Guide Before OperationFront Panel REC PausePlay Camera SelectRear Panel Operation Getting StartedRecording Play Back Camera SelectMenu Options Main MenuSystem Timer Camera Alarm RecordPIP DwellDisplay Remote UserVideo Loss EventSearch KEY Lock TroubleshootingRS-232 Remote Protocol Specifications Recording RateAppendix #1 Install the HDD Appendix #2 Replace the HDDAppendix #3 PIN Configurations DVRPIN 14. Alarm Reset Input PIN 7. External Alarm NCPIN 8. External Alarm no PIN 15. External Alarm COMAppendix #4 Recording Speed Ntsc System PAL SystemAppendix #5 Network Application Video Web Server