The transmitter is the part of the camera that sends video to the recorder or viewer’s device by either converting it to Ethernet in IP cameras or into a HD-CVI analogue format in analogue cameras. In IP cameras transmission happens internally – these cameras only require a local area network to send information. Whereas, in analogue video surveillance systems, cameras need to be connected to a DVR with coaxial cable in order to transmit information.
Image sourced from: Visual Verification Systems Inc.
Comparing Analogue and IP Cameras
| IP Cameras | Analogue Cameras |
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The Difference Between NVR and DVR Recorders
| NVR (Network Video Recorder) | DVR (Digital Video Recorder) |
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Compatible with IP cameras |
Compatible with Analogue cameras |
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Encode and process video data at the camera, data is then streamed to the NVR recorder which is only used for storage and remote viewing |
Process video data at the recorder, an analogue signal is streamed to the recorder and this is where the image is processed (footage typically cannot be viewed and stored remotely – must be stored and viewed onsite ) |
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Wired or wireless system |
Wired system |
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Requires more complex and therefore more expensive cameras (IP cameras) |
Requires less complex and therefore cheaper cameras (Analogue cameras)
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Each camera only needs to be connected to the same network |
The user must connect every camera to the recorder |
Should you upgrade your old analogue CCTV system or replace it with an IP system?
If it’s within your budget, we would almost always recommend switching to an IP based (digital CCTV) system.
However, there are some circumstances in which upgrading an existing analogue CCTV system may be more appropriate, for example if lots of footage is required to be stored for long periods of time.
If you were to upgrade your existing analogue system, we recommend that it be upgraded with HD-CVI technology. This is because:
- coaxial cable can be reused, cutting down labour costs
- HD-CVI (High Definition Composite Video Interface) increases the resolution of analogue CCTV video (which was previously restricted to low resolutions such as 720MP or 1MP), users can capture Ultra HD Resolution (8MP)
- HD-CVI technology gives you access to latest CCTV features: 8MP resolution, smart analytics and remote view through your mobile phone
Here at Jim’s Security we have a wide range of CCTV packages starting at $1495 and offer professional installation of customer supplied CCTV systems from just $150 per camera. To find out more, visit our CCTV & Camera Systems page. Or to learn more about the different features and components of CCTV systems and security cameras take a look at our CCTV and Security Camera Buyers Guide.
We are also readily available to help answer any questions or queries you may have about finding a security system tailored to the specific requirements of your home or business and lifestyle. Contact us on 131 546 or book a free onsite quote online.
