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37 Cards in this Set
- Front
- Back
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A ____ ____ installation would be used to watch workers suspected of stealing |
Covert camera |
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The function of the ____ is a video security system is to convert the electrical signal into an image for veiwing |
Monitor |
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Disaster planning should include video surveillance to |
Protect human life Minimize personal injury Reduse exposer of physical assets Video document equipment Help management of security force |
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The equipment needed to set up security system is |
Camera, monitor, transmission means and lens |
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Why has video over utp made such gains over coaxial cable in the last few years |
Cost less |
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Video monitoring allows the guard force to be more effective by allowing the guard to veiw_____ _____ from a _____ ____ |
Multiple areas from a centralized location |
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When the lens magnification is less than 1, it is considered to be a _____ lens |
Wide angle |
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How does using optical fiber link eliminate ground loops in video installations |
It's a non electrical system |
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The target size and reflectivity when veiwing objects thru both monochrome and color cameras are related in that if the reflectivity is the same as the _____ ____ can be smaller in a color camera |
Target size |
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A pan tilt camera mounted to an outside corner will have ____ degrees horizontal rotation |
270° |
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Almost all modern CCTV cameras operate using what voltages? |
12DC or 24 VAC |
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The high definition video format for displays is? |
16x9 |
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Most indoor camera housings are designed to protect the camera from _____ and ______ |
Tampering and vandalism |
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The dome portion of a dome camera housing is normally made of? |
Arcyllic Plastic |
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_____ and ______ light are normally used for scene illumination |
Artificial and natural |
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A firewall acts as a? |
Access control system |
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_____ camera technology converts the output of the image sensor into a continually varying sinusoidal signal |
Analog |
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What are two types of CCD sensor pixel architectures |
Inter-line transfer array Frame transfer array |
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_____ motors are used to drive a pan/tilt mechanism |
2 |
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How does video motion detection work? |
Analyzes scene pixel by pixel looking for unacceptable change in light levels |
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According to the text, the ____ battery is used extensively in the video surveillance industry to power portable equipment and as a standby backup battery power source |
NIMh |
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A ___ type switcher is used when the customer wants to be able to connect a second switcher using the same camera inputs as the first switcher |
Looping |
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A ____ _____ ______ ____ lens would be used with a pan & tilt mount to fallow individual cars as well as cover a large parking lot |
Motorized zoom auto iris |
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What was the mechanism used prior to the VCR for security recording was? |
Reel to reel video tape |
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The format size In a camera determines ? |
Lens size Focal length Resolution |
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____ ____ or better _____ _____ coaxial cable should be for CCTV |
95% |
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The ____ of the ____ _____ used determines the image resolution of the CRT |
Diameter Electron beam |
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If a quality and conserving video tape are both important to the customer. The solutions are? |
Alarm input- tapes during alarm Change tape more often |
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A ____ _____ _____ occurs when a camera views a scene and a remote viewer determines there is an alarm |
Remote alarm verification |
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What type of lens should be used with an outdoor mounted camera viewing a small parking lot |
Fixed focal length auto Iris |
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The _____ control on the DVMD allows the operator to adjust how often the reference is updated |
Refresh |
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What compression standard has the primary goal of transmitting broadcast video bit rates between 4 and 9 Kbps |
MPEG-2 |
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What are some considerations when installing pan/tilt units? |
Compatibility Right cables Proper unit for installation |
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Most outdoor CCTV cameras must have a _____ _____ to adjust over the large light level range encountered |
Automatic-iris lens |
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The video resolution of a quad processor is quad mode vs. in single image mode is? |
Decreased |
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The function of a _______ ______ is to record and display up to 32 images in a thumbnail format |
Duplex multiplexer |
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CCTV and computers both using network technology has led to development of the? |
Virtual matrix switcher |
