VDH-NK350A
Hardware Manual
10
4. Wrong firmware problem; Upgrade firmware to fix it.
Q 18.
Alarms do not work
A : The possible causes:
1. Wrong alarm setting
2. Wrong alarm wiring
3. Wrong AlarmIn signal
4. One alarm equipment involves into two loops.
Q 19.
The remote controller cannot work
A : The possible causes:
1. Wrong control address
2. Long distance or poor angle
3. Battery run out
4. Controller or NVR front panel is out of order
Q 20.
Short recording time
A : The possible causes:
1. Bigger data rate from poor camera quality, dirty lens, backlight
installation, bad aperture adjustment.
2. Small HDD storage
3. HDD damage
Q 21.
Download files cannot be played back.
A : The possible causes:
1. No player
2. No graphic accelerator with DX8.1 or above
3. Save as AVI files and play with MEDIA PLAYER
Q 22.
Forget the administrative password or internet password
A : The possible solution:
1.
Please contact local customer service staff or call the customer service
phone headquarters, we will guide you how to solve by the machine
type and version of the program.
2.
Maintenance
Damped dust on the PCB board will cause a short circuit and will do
something wrong to the NVR or damage it. For long-term stability of the
NVR, regularly brush the circuit boards, connectors, fans and chassis to
remove dust.
Please ensure the project is well-grounded, so images, audio signal will
not be disturbed. At the same time, we can protect the NVR from static
or inductive voltage damage.
