Types of DVR device properties

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

Communicator

The Communicator holds the following child properties.
- UDP Communicator
  
  This property holds UDP - related transmitter and receiver properties. All transmitter property statistics may be reset to zero by right-clicking on the UDP Communicator component and selecting ActionsReset Statistics from the popup menu.
  - Transmitter
    
    This property represents a UDP Transmitter that contains the following configurable and read-only properties:
    
    Transmission Attempts, Transmission Count, Retry Count
    
    These read-only fields display the number of times transmissions were initiated, distinguishing between successful and unsuccessful attempts, as well as retransmissions. These numbers may be set to zero, as described above.
    
    Max Retry Count
    
    This field allows you to specify how many retransmissions are allowed when a transmission attempt is unsuccessful.
    
    Send To Address
    
    This property holds two text field properties that are provided to designate the DVR IP Address and the DVR IP Port number.
  - Receiver
    
    This property represents a UDP Receiver that contains the following configurable and read-only properties:
    
    Response Timeout
    
    This configurable field allows you to set a desired timeout period in hours, minutes, and seconds.
    
    Num Frames Received
    
    This read-only frame displays the number of video frames that have been received since the last statistic reset.
  - Network Interface
    
    This field allows you to specify the type of interface that the DVR uses to connect to the network.
- HTTP Communicator
  
  This component holds HTTP - related transmitter and receiver properties, polling settings, and credentials for logging into the DVR device.
  - Transmitter
    
    This property represents a UDP Transmitter that contains the following configurable and read-only properties:
    
    Transmission Attempts, Transmission Count, Retry Count
    
    These read-only fields display the number of times transmissions were initiated, distinguishing between successful and unsuccessful attempts, as well as retransmissions. These numbers may be set to zero, as described above.
    
    Max Retry Count
    
    This field allows you to specify how many retransmissions are allowed when a transmission attempt is unsuccessful.
  - Receiver
    
    This property represents a UDP Receiver that contains the following configurable and read-only properties:
    
    Response Timeout
    
    This configurable field allows you to set a desired timeout period in hours, minutes, and seconds.
    
    Num Frames Received
    
    This read-only frame displays the number of video frames that have been received since the last statistic reset.
  - Poll Scheduler
    
    This property contains parameters that you can configure in order to observe and “tune” the HTTP communications for the associated device. Polling and the associated properties are described in the NiagaraAX-3.x Drivers Guide.
  - Credentials: Username, Password
    
    In these two fields, enter the credentials for user level access to the device.
    Some video drivers that support DVR devices may require additional credentials to access DVR configuration settings. For example, see Dedicated Micros driver.
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.