Blue Book Chapter 2 Questions Flashcards
What is the difference between a ‘Duress Code’ and a ‘Keypad Panic’?
A Duress Code secretly activates a silent alarm to notify C.M.S of a forced arming/disarming of a security system where as a Keypad Panic instantly activates all alarms as well as notifying C.M.S of the incident.
List three things that may interfere with wireless performance.
- RFI and EMI
- Building materials
- Dense objects
What is the range of most glass-break detectors
15-30 feet
What is the maximum run distance between the transformer and control panel for 18 AWG?
25 feet
What color wires are used for outgoing signals on a RJ31X cord?
Grey and Brown.
What color wires are used for incoming signals on a RJ31X cord?
Red and Green.
when using a 2000 Ohm end of line resistor on a closed loop switch, what ohm values will you see during secure conditions?
2000 Ohms
What is automatic arming?
Security system arms based on a timer.
how can you reduce the occurrences of false alarms when using photoelectric beam detectors?
Use dual beam overlaps
What is a walk test/chime?
Causes alarm sounder to chirp when violated. (useful for testing)
Why is system expansion necessary?
Allows the addition of more devices at a later time.
Multiple closed circuit devices must be connected in ___________.
Series
What is a 24 hour zone?
Constantly alarmed no matter what:
Fire, water, RJ31X
Are standalone wireless receivers required to be made by the same manufacturer as the alarm panel?
No
What is the most common form of space protection used in modern security systems?
Motion detection (Passive infrared or microwave).
Define open circuit/loop.
Closes circuit upon activation.
What is the maximum run distance between the transformer and control panel for 12 AWG?
125 feet
The purpose of the system keypad is to:
Provide an interface between the user and the control unit for system use and programming.
What type of circuit is recommended for the transformer?
120 V AC on a dedicated circuit without a switch
What is the maximum run distance between the transformer and control panel for 16 AWG?
50 Feet
How do dual technology audio glass breaks reduce false alarms?
Both an audio and shock sensor must activate to set off alarm.
what are the advantages when using a supervised transmitter versus an unsupervised model.
Supervised transmitters report problem and what the problem is where as unsupervised transmitters only report that there is a problem.
What are the advantages to utilizing video verification?
Images and clips are saved to the monitoring station.
What are three communication methods that are alternatives to standard telephone lines?
- Cell
- Radio
- Internet
What is force arming?
Automatically bypass zones that are not ready to be armed until they are. (Example - zone is bypassed until door contact is closed)
What is a security system keyswitch?
Dry contact device, arms/disarms the panel
Multiple open circuit devices must be connected in __________.
Parallel
Can you mount a glass-break detector above the window that is being protected?
Yes, check manufacture instructions.
Define closed circuit/loop.
Opens circuit upon activation.
*Most common
What is a zone?
An input on a command panel individually identified by the control panel.
What is lock out?
can not change system with out code:
*Too many incorrect guesses locks you out of the keypad
What is automatic bypass?
Security system automatically bypasses interior zones when system is active.
when using a 2000 Ohm end of line resistor on a closed loop switch, what ohm values will you see during active conditions?
Infinite Ohms
Where are shock sensors mounted?
On the window or window frame
List three types of environmental sensors and how they work.
- Temperature - sense to hot or to cold.
- Water - detect presence of water or water levels.
- Humidity - sense to high or to low .
How does an audio glass-break detector work?
Detects the frequency of glass breaking by using a microphone to detect certain tones.
Most modern alarm systems operate on _______ Volts
12 volts DC
RJ31X acronym expanded.
Registered Jack 31 Complex
List some sources of false alarms for audio glass-break detectors.
clapping, jingling keys and change, and other high frequency noises.
How are system outputs controlled?
Controlled by the system programming.
How do expansion modules communicate with the control panel?
Keypad or communications expansion circuit. In panel expansion buss or keypad expansion buss.
Is T-tapping the addressable circuits allowed? If so how is supervision of the circuit maintained.
Yes, the device can supervise itself and the panel knows if a device is missing.
What is a swinger shutdown?
When a security system bypasses zones that repeatedly go into alarm until defective device is fixed.
What type of switches are used for banks, jewelry stores, and some government facilities?
High security/Biased
What is a interior zone?
Detects activity inside building:
Motion detectors
What is a fire zone?
Supports fire alarm devices.
What is a Entry/Exit zone?
Delay sounding alarm so you have time to set/disarm alarm
- On entry 30 seconds
- On exit 60 seconds
What piece of equipment is used for the alarm system communication interface?
RJ31X connected to a phone line.
Most contacts are activated by what two means?
Magnetic or Mechanical.
What is an interior follower zone?
Follows entry/exit zone delay parameters to allow you to activate/disarm alarm.
List the six common features/factors for security system design.
- Detection for all vulnerable perimeter entry points
- Interior detection
- Notification of siren/strobe
- Standby power
- Secure method of communications (radio, Ethernet, RJ31X)
What items could interfere with the operation of an audio glass-break detector?
Curtains, blinds, mounting location.
How does a Microwave detector work?
Doppler effect - detection of an increase, or decrease, in the frequency of sound, light, or other waves as the distance between the source and the detector increases or decreases. Typically radio waves in our industry.
What gauge wire will I need to tun if the transformer is 40 feet from the control panel
16AWG
What are the two technologies used most in dual technology motion detection?
- Dopper swift (microwave)
* PIR (Passive Infrared)
what will diminish the effectiveness of a surge protection device.
When the ground used for the electrical system is less than effective
What is a perimeter zone?
Instant zones, activate instantly:
Door contacts, glass breaks, ….
How does passive infrared detect an intruder?
Temperature change. backwards temp.
What are the advantages to utilizing audio verification?
allows listening/speaking to monitor location.
Why are mechanical shock sensors more prone to false alarms?
Lack of circuitry to analyze shocks.
When would you use a reflective beam?
When running wire to both sides of space is not possible.
What are the three types of photoelectric beam detectors?
- Single beam
- Dual beam
- Reflective beam
List five things that may cause false alarms in PIR detection.
- Forced air
- Pets and animals
- Heating
- Sunlight and shadows
- Bugs
Normally open closed circuit devices are typically wired ___________.
in a series configuration.
How many sirens can be connected to a security panel?
Multiple, don’t exceed available current.
What are opening and closing reports?
A signal is sent to the Central monitoring station when system is disarmed/armed.
What is automatic test?
Sends test signal to the Central Monitoring station at preprogrammed intervals.
In security what is a Line Seizure?
The security system takes control of a line to ensure emergency call gets through.
What types of contacts are typically wired in a series configuration?
Closed circuit devices that are normally open.
What are two motion detector types?
- Passive Infrared
* Microwave
how are addressable expansion devices typically connected to the control panel?
Single two wire circuit.
What is a panic button?
Keypad button instantly sets off alarm/ notifies police dispatch.
How is a heavy duty switch different from a regular duty switch?
The addition of heavy duty housing and armored cable.
What is a partition?
Assigned to specific zones per key pad.
allows user to lock/unlock zones
What is the purpose of the EOLR?
Supervision of the circuit .
What is the maximum run distance between the transformer and control panel for 14 AWG?
75 feet
The RJ31X is used as the alarm systems __________.
Communication interface
What is the difference between a speaker and a siren?
Speakers need an external audio source where as sirens have a built in audio source.
What devices are used to extend the range of a wireless device?
Signal amplifiers and repeaters.
What is the operating principle of a photo electric beam detectors?
If the beam light is broken it goes into alarm.
Can smoke detectors or heat detectors be installed on any control panel?
No, only on specific panels properly listed for device.
