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. VIDEO LOSS
When video loss happens, it will send a signal to trigger another accessory.
This pin output becomes “Low” when video loss, and normal operation remains “High”
PIN 4. SWITCH OUT
Connect to VCR trigger recording terminal of multiplexer, in order to synchronize recording signals. The default
mode is falling (Negative) Edge.
PIN 5. ERROR OUT
When HDD errors happen, this pin will send a signal out.
This pin become “Low” when HDD errors happen. The normal operation remains “High”
PIN 6. REC START
This pin can accept the external trigger signal to activate record mode from external device. When the external
signal turns to “Low”, it will trigger DVR record mode. When the external signal goes back to “High”, it will stop
recording action.
The default normal operation 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 connect with NC and disconnect with NO. But when Alarm triggered, COM
disconnect with NC, and 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
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 13. ALARM RESET
To connect wire from
ALARM RESET ( PIN 13 )
to
GND ( PIN 9 )
connector, it can disable ALARM. An external
signal to
ALARM RESET ( PIN 13 )
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 14. ALARM INPUT
To connect wire from
ALARM INPUT ( PIN 14 )
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 15. 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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Содержание DGR1100 Series
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