Security Control Room / CCTV Operator flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Operator legal authority

The powers an operator may exercise, derived from site licence, employer policy, and national law. Operators must be able to name the authority behind any action they take.

Proportionality in surveillance

A test applied before camera or data action: the intrusion into privacy must serve a genuine security need and be the least intrusive means reasonably available.

Conflict of interest declaration

An operator who recognises a person or incident on screen with a personal connection must declare it and hand the task to a colleague.

PTZ camera

A camera with remote pan, tilt, and zoom control. One unit covers a wide area but can watch only one scene at a time, so preset positions are used.

Focal length effect

Short focal length gives a wide field of view with less detail per metre; long focal length narrows the view and increases pixel density on a distant target.

Pixel density for identification

The number of pixels covering one metre of the target. Roughly 250 pixels per metre supports identification; lower densities support detection or recognition only.

Power over Ethernet

A technique delivering both data and electrical power to network cameras over the same Ethernet cable, simplifying installation and reducing separate power cabling.

Fibre optic transmission

Signal transport over glass fibre, used for long cable runs and electrical isolation between outdoor cameras and control room equipment, immune to electromagnetic interference.

Primary monitor position

The most critical display sits centrally at or slightly below eye level, about 40 to 75 centimetres away, with the screen top near eye height.

Screen glare control

Ambient lighting is arranged so no light source reflects in the monitor. Screens should be brighter than surroundings but the room must stay safely navigable.

Circadian alertness low

A natural dip in alertness in the early morning hours. Rosters and break schedules should account for it, especially on permanent night shifts.

Console ergonomics

Chair and desk adjusted so feet rest flat, lumbar support is present, and elbows sit near 90 degrees, reducing musculoskeletal strain from long static shifts.

Camera patrol variation

Changing the route and timing of camera sweeps so the pattern is unpredictable, preventing intruders from timing activity to the gaps.

Wide-to-narrow scan

A scanning method starting with overview cameras to detect anomalies, then zooming to verify. Starting zoomed in causes peripheral activity to be missed.

Lead-the-target tracking

A PTZ technique of moving the camera slightly ahead of the subject's direction of travel, keeping the subject framed rather than chasing its centre.

Dwell-time indicator

A behaviour cue where a person remains in one place without apparent purpose, repeatedly checks cameras or exits, or tests doors.

Alarm response sequence

Acknowledge the alarm, identify zone and camera, verify visually, classify it, then dispatch or escalate and log the outcome.

Alarm classification

Sorting alarms into genuine (real event), false (equipment or environmental trigger), and nuisance (real trigger with no security significance).

Alarm fatigue

Reduced operator responsiveness caused by frequent false alarms. The remedy is logging patterns and requesting maintenance or setting changes, not ignoring zones.

Two-person incident rule

For major incidents one operator maintains observation and narrates while a second handles radio, telephone, and logging, so no task is dropped.

Radio call structure

Identify caller, identify recipient, state the message, then confirm receipt. Transmissions are short and use plain language.

Phonetic alphabet use

Spelling letters with standard words such as Alpha, Bravo, Charlie, and speaking numbers digit by digit to prevent mishearing on radio.

Press-to-talk discipline

Pause briefly after pressing the button before speaking and release fully afterwards, so the first and last words are not clipped.

Closed-loop confirmation

The receiver reads back a critical instruction and the sender confirms the read-back matches, preventing action on a misheard message.

Chain of custody

A continuous record of every transfer of evidence, showing date, time, from whom, to whom, and why, required for evidential integrity.

Hash value verification

A computed digital fingerprint of a footage file. Comparing hashes before and after copying shows whether the copy has been altered.

Incident footage preservation

Relevant footage is flagged and held beyond the normal overwrite cycle, with each viewing logged by operator identity, time, and purpose.

Door-held-open alarm

An access-control alarm raised when a door stays open past a timing threshold after a valid read; usually a slow user, verified on camera.

Forced-door alarm

An access-control event where a door opens without a valid credential. It is treated as a potential intrusion and verified on camera immediately.

Anti-passback violation

A credential used in an order that breaks entry and exit logic, often indicating tailgating or credential sharing, and warranting observation.

Dual-technology sensor

An intrusion detector combining passive infrared with microwave sensing. Both must trigger for an alarm, reducing false activations from heat or drafts.

Fire alarm control room steps

Identify the zone on the panel, verify on camera where safe, make the evacuation announcement, then notify the fire service and site responders.