To determine your level of knowledge of digital video recorder technology, take our 20 Questions quiz. Then turn to page 30 to find out how you scored.
- Digital video recorders record on digital videotape.
- True
- False
- Real time recording rate is considered to be
- 1 frame per second.
- 15 frames per second.
- 30 frames per second.
- 15 frames per minute.
- 30 frames per minute.
- Hard drive size on a DVR will determine
- data storage time.
- how many frames per second at which cameras can be set to record.
- concurrent client-viewing connection availability.
- bandwidth usage.
- none of the above.
- Which operating system is required to
view a DVR’s cameras over a network?
- Windows 98
- Windows 2000
- Windows XP
- Apple 9.0
- Depends upon the viewing application
- All DVRs use the same operating system.
- True.
- False.
- For general security purposes, the most
efficient use of recording space on a DVR can be attained by setting the DVR to:
- record on weekdays only.
- record constantly.
- record on motion/activity detection only.
- record on a schedule.
- Bandwidth is not a concern when
viewing a DVR’s cameras over a network.
- True
- False
- All DVRs record using bmp
video compression.
- True
- False
- When calculating for the amount
of storage time on a DVR it is
important to know
- the desired frame rate of the cameras being recorded.
- the hours of operation of the customer’s business.
- the number of cameras to be recorded.
- All of the above
- To record properly DVRs must be set
to record on a prearranged schedule.
- True.
- False.
- Which of the following cameras
can be recorded on a DVR?
- IP cameras
- black-and white-cameras
- high-resolution color cameras
- Any of the above
- None of the above
- All DVRs have the same storage capacity.
- True
- False
- When integrating a DVR with a
burglar alarm system, the alarm
outputs of the burglar alarm would
be connected to the DVR’s ________
to trigger alarm recording.
- camera video inputs.
- camera outputs.
- alarm inputs points.
- parallel input port.
- Which of the following is an
advantage of DVRs over VCRs?
- Physical space needed for storage of recordings
- Speed of searching an event
- Ability to easily send and print images
- All of the above
- Which DVR has the larger
theoretical storage capacity?
- 10 kilobyte drive
- 2 terabyte drive
- 540 megabyte drive
- 1,000 bit drive
- The video output of a camera
should be connected to the
video _______ of the DVR.
- output
- input
- alarm output
- comm port
- Color and black-and-white cameras
never should be used on the same DVR.
- True
- False
- For ease of remote viewing over a
network, it is important to have a
fixed IP address set in the DVR.
- True
- False
- DVRs are only viewable on a
customer’s internal network.
- True
- False
- After setting a DVR to record on
motion/activity only, the best way
to check that your settings aren’t
triggering falsely would be to
- search for events recorded/triggered when there is no motion/activity.
- search for events when there is motion/activity.
- check your schedule settings.
- None of the above.
Check your answers: Field Guide - 20 answers about dvrs.
Why Is this not the Preferred Way to Install?
The security industry’s bane installer, Wally ‘Larman, installed a video surveillance system for a client that included a DVR, dome camera and an analog CCTV monitor viewing station at a receptionist’s desk. He connected the devices as shown in this diagram. While this approach will work, it is not the best way to accomplish the task. Can you see what Wally can do to make the system work better and be more flexible?Answer: 20 answers about dvrs.
What’s Wrong with T-tapping?
Wally ‘Larman installed a video surveillance system that included a DVR, dome camera, and an analog CCTV monitor viewing station. Because the camera and DVR were a long distance apart on opposite sides of the facility, Wally T-tapped the video output of the camera to complete the job faster and go home early. What should Wally have done to properly install the system?Answer: 20 answers about dvrs.