User Manual
Table Of Contents
- Chapter 1 Product introduction
- Chapter 2 Installation
- Chapter 3 Getting started
- Chapter 4 Operating instructions
- Chapter 5 Live view
- Chapter 6 Controlling a PTZ camera
- Chapter 7 Playing back a recording
- Overview of the playback window
- Playback pop-up menu
- Instant playback
- All-day playback
- Searching recorded video
- Playing back recordings by time and video type
- Playing back recordings by event
- Creating and playing back bookmarked recordings
- Slideshow of snapshots
- Playing back recordings from the system log
- Playing back frame-by-frame
- Digital zoom in playback
- Chapter 8 Archiving recorded files
- Chapter 9 Using the web browser
- Windows Vista and 7 users
- Accessing the web browser
- Web browser overview
- Using the web browser to configure the device
- Searching and playing back recorded video
- Searching for event logs
- Dual streaming
- Controlling a PTZ dome camera in the web browser
- Capturing text insertions
- Text overlay
- Using a network storage system
- Chapter 10 Recording
- Chapter 11 Alarm settings
- Chapter 12 Network settings
- Configuring general network settings
- Configuring an NTP server
- Configuring e-mail
- Configuring SNMP
- Configuring the FTP server
- Configuring a remote alarm host
- Configuring multicast
- Configuring the server and HTTP ports
- Configuring the RTSP service port
- Checking network status
- Exporting network packet data
- Port forwarding
- Chapter 13 HDD management
- Chapter 14 Camera settings
- Chapter 15 NVR management
- Chapter 16 User management
- Appendix A Specifications
- Appendix B PTZ protocols
- Appendix C Port forwarding information
- Appendix D KTD-405 keypad
- Appendix E Maximum pre-recording times
- Appendix F Supported PTZ commands
- Appendix G Default menu settings
- Glossary
- Index
9BChapter 10: Recording
TruVision NVR 21 User Manual 87
External alarm schedules
The NVR can be scheduled to record when an alarm is triggered by an external
alarm device such as a PIR detector or dry contacts. For information on
scheduling external alarms, see “Triggering or clearing alarm outputs manually”
on page 96.
Protecting recorded files
There are two methods to prevent recorded files from being inadvertently
overwritten or deleted off the HDD. We highly recommend that important
recorded events be protected from deletion. Recorded files can either be locked
or the HDD that the files reside on can be set to read only.
Locking and unlocking recorded files
Lock files to protect them against being overwritten or deleted.
To lock or unlock a recorded file:
1. In live view enter the video search screen by pressing the Search button on
the front panel or remote control, and then enter Advanced Search.
— Or —
In live view right-click the mouse to display the pop-up menu and select
Advanced Search.
The Search screen appears.
2. Search for the desired recording by entering the search parameters, which
include the camera number, record type, file type, and start time and end
time.
3. Click Search.