LT Security LTD7726 CD - Manual (Page 5)

1.2.2 BASIC WORKING PARAMETER
item parameter remark
Voltage input 19V DC 19V.
Video impedance
input
75Ω 75Ωeach channel.
Video output 1Vp-p 1Vp-p CVBS signal
0—2V Low voltage alarm
I/O
5V-30v High voltage alarm
RS232 serial port, for extend use
RS485 Connect to PTZ, (Pelco-D,Pelco-P)
SATA HDD 2 SATA with all capability
1.3 ENTIRONMENT ADAPTABILITY
For the safely using DVR and prolong device life, please pay attention on following detail:
1) When installing device, please comply all the electric product safety criterion;
2) Power and ground:
‹ Do not touch the power and DVR with a wet hand
‹ Do not drop liquid on DVR
‹ Do not put others on DVR
‹ Please using soft dry cloth when clean DVR, do not using chymist impregnant
‹ When the power line connects with jack, even don’t startup device. There is still have
voltage
‹
If you do not use device for long time, please take the power line away from jack.
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