LT Security LTD7726 - Manual (Page 6)

6
1.2.2 BASIC WORKING PARAMETER
Item Parameter Description
Voltage input 19V DC 19V
Video impedance
input
75Ω 75Ω each channel.
Video output 1Vp-p 1Vp-p CVBS signal
I/O
0—2V Low voltage alarm
5V-30v High voltage alarm
RS232 Serial port, for extend use
RS485 Connects to PTZ, (Pelco-D,Pelco-P)
SATA HDD 2 SATA HDD with mainstream capacity
1.3 ENVIRONMENT ADAPTABILITY
For safety while using the DVR and to prolong device life, please pay attention to the
following details：
1) When installing device, please comply with all the electric product safety criteria.
2) Power and ground:
 Do not touch the power and DVR with a wet hand
 Do not drop liquid on DVR
 Do not put any object on DVR
 Please use soft dry cloth to clean DVR; do not use chemical impregnant.
 The Device will have voltage before startup if the power line is connected to power source.
 Please unplug power line from power source if the Device is not intended to be used
for a prolonged time.