About the DVR device

The DVR component represents a single Digital Video Recorder (DVR) device. One or more DVR components may be added using the Device Manager view. DVR devices vary, according to model and video driver. If a DVR device supports cameras, then the DVR device configuration needs to include information to allow communication between the DVR device and the camera device. DVR properties and actions may vary based on the DVR type.

Types of DVR device properties

In addition to the common properties (mentioned in About the Video Framework hierarchy) the following properties are common to most DVR devices:

Video Device Id
This property holds a single ‟Description” field for typing a text string to identify the DVR device.
Monitor
Monitor provides verification of the general health of the network, plus the network's ‟pingables” (devices) by ensuring that each device is minimally pinged at some repeating interval. This property contains Ping and Alarm related parameters, as described below:
- Ping Enabled
  This property allows you to disable (false) or enable (true) the Ping Monitor function. You should leave Ping Enabled set to true in almost all cases. In this state, a ping occurs for each device under the network, as needed. While set to false, device status pings do not occur and device status message displays cannot change.
- Ping Frequency
  This property allows you to set the interval time (in hours, minutes, and seconds) between pings of the DVR. Specifies the interval between periodic pings of all devices. Typical default value is every 5 minutes (05m 00s), you can adjust differently if needed. The default setting of 5 minutes between pings should be good for most situations. If the ping frequency is set to some very low setting and you have a lot of devices on the network, the message traffic for pinging could be significantly higher.
- Alarm on Failure
  This property allows you to disable (false) or enable (true) generation of an alarm if the DVR transitions to a failed state. If this property is set to true (default), an alarm is recorded in the station's AlarmHistory upon each ping-detected device event (down or subsequent up). If false, device down and up events are not recorded in the station's AlarmHistory.
- Startup Alarm Delay
  This property value specifies the period a station must wait after restarting before device down or up alarms are generated. This applies only if the Monitor's property Alarm On Failure is true.
Cameras
This component is a container that comes, by default, with some DVR device components.