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Frequently Asked Questions (FAQ) NVDV2

Digital Video Recorders

1. What does Embedded Linux mean?

Embedded Linux means that the operating system of the DVR has been implanted onto the CPU (Central Processing Unit). This means that the system response time is faster, is more stable, and that the core of the DVR is never affected by external factors, such as virus, hacking, and system failure due to hard drive abnormalities.

2. Could I watch the DVR through a regular TV or computer monitor?

Besides the S-Video output, the DVR does not have a direct video output for TV or computer monitor. However, a third party device or adaptor can be utilized to convert the BNC connector into RCA connector, or to convert the composite signal to VGA signal.

3. Is there a way to disable the password prompts?

The administrator password prompt is never disabled. However, the user password can be disabled by turning Auto Key Lock off from the System submenu. Please refer to page 70 for more information.

4. How long, on average, does it take to a backup to an external device?

Regardless of the speed of the external CD-RW/DVD-RW or hard drive, it takes about five minutes to backup one minute of video clip onto the external device.

5. Is there a way to recover my forgotten password?

There is no way to recover the forgotten password. Please contact the vendor or Nuvico Help Desk.

6. Why do I get motion recording though nothing has moved on the screen?

The DVR considers any changes in pixels, brightness, contrast and color as motion. Sometimes, even a slightest movement of a shadow, or camera noise is enough to trigger motion recording.

7. Do I need extra speakers to hear the audio during playback which has audio?

The DVR does not have a built-in speaker to playback audio. A connection from the audio output to a device with audio output is necessary to hear audio.

8. How are the settings preserved on the DVR?

The settings on the DVR are preserved on its internal memory, which is powered by a backup battery when the DVR is powered down. A typical battery life is seven days. The DVR, provided that the unit was powered down properly by pressing the power button, also keeps a copy of the settings on the hard drive. When the battery power is drained and the settings are lost from its internal memory, the DVR recalls the settings from the hard drive when it is powered on at a later time.

9. How can I reset the DVR to the factory default setting?

The factory default setting can only be reset at the vendor or from Nuvico Help Desk.

10. What is the estimated recording time per recording settings?

The estimated recording time per recording settings will actually vary based upon the environment and the images that the DVR captures. Please contact the vendor or Nuvico Help Desk for an estimated recording time per settings.

11. Can two or more DVRs be connected and controlled using a single control device?

The DVRs can be controlled using one remote controller. The DVRs also may be controlled using the CMS. Please see page 71 for DVR ID and page 111 for CMS.

12. Is it possible to take a snapshot of the screen while the DVR is recording or playing back?

On the DVR, it is possible to take a snapshot of the screen only during playback and single channel mode. Please refer to page 40 for more information. On the CMS, it is possible to take a snapshot of the screen at any time. Please refer to page 114 for more information.


1. Why is DSL not supported?

In the United States of America, the majority of the DSL services provided are based PPPoE (Point-toPoint Protocol over Ethernet). Though the PPPoE DSL service may be dynamic, it is different from the conventional dynamic IP address for the following reasons:

  • 1) A user name and password is required to "log in" to the network.
  • 2) The IP address changes too frequently.

A good rule of thumb is that if a VPN (Virtual Private Network) cannot be established, the DVR's dynamic IP address support cannot be realized.

2. What do I need to access the internet connecting both my computer and the DVR?

A single IP address internet service such as cable modem or static DSL, a router is needed to share the bandwidth. An internet service which provides a range of IP addresses, only a network switch or a hub is sufficient to provide additional connection and share the bandwidth.

3. What are the best routers to use with the DVR?

There are no "best" routers to use with the DVR. D-Link's router was provided as an example because the default host address (192.168.0) is the same as the DVR's host and IP address ( Any router may be used with the DVR.

4. Why can't I connect to the DVR in the local area network (LAN)?

There are several possibilities as to why the DVR cannot be accessed in the local area network.

  • 1) The CAT5 cable may be defective.
  • 2) The IP address and the host address may not be in sequence with the router and the computer.
  • 3) Wrong IP address may be entered.
5. Why is the frame rate so slow over the internet?

The frame rate is as good as the upload speed of the internet service on the DVR end. The faster the upload speed, the faster the overall frame rate will become. The frame rate displayed on the Web Client Viewer is irrelevant to the actual recording rate on the DVR.

6. I can't connect to the DVR. I have connected to the cable modem using the USB cable.

The USB port is only used to connect and communicate with external backup devices such as CD-RW, DVD-RW, external hard drives and memory stick.

Web Client Viewer / Local Player / CMS

1. Is it possible to download the recorded data only for a specific camera?

The Web Client Viewer for the DVR downloads all cameras at once. However, it is possible to do a remote playback for a single channel with the CMS. Please refer to page 128 for more information.

2. Is the password used on the DVR the same as the web client?

The user password is used to log into the Web Client Viewer. The administrator's password is used to access DVR settings, the Download Manager, and the PTZ control.

3. Could all the options settings on the DVR be changed through the Web Client Viewer?

All options and features can be modified using the Web Client Viewer except for the motion grid settings and the schedule recording. However, all option settings can be modified using the CMS.

4. Could I set various users to have different passwords when logging to the web client?

There are only two levels of passwords: user and administrator.

5. Why do the images take time to load on the Web Client Viewer?

Depending on the upload speed of the internet connection on the DVR end, it may create a little delay to start transmitting the video.

6. What is the Default password for Client software?

The default password for DV2/JV client software is " 0 ".

7. The DVR Web Client does not download and install automatically. What's wrong?

Check the privileges on the computer. Administrator level or equivalent level of access is necessary to install programs. Moreover, verify the Internet Explorer security setting involving Active X is set to default.

8. Can the saved video clips be played on Windows Media Player?

Saved video clips cannot be played on Windows Media Player. It requires the either the Local Player or the CMS to review the data.

9. Does the client software work on other operating systems such as Linux and OS X (MAC)?

At the present time, the both the Web Client Viewer/Local Player and the CMS are only available on PC format.


1. Can I attach a mouse, keyboard or joystick via the USB port to control the DVR?

The only device that controls the DVR besides the front panel is the included remote controller. The USB port is used to connect external backup devices.