DVR User Manual
  User’s Manual 
DVR-4TH/8TH/16TH Series 
SPECO TECHNOLOGIES 07/10
137
Focus +/− 
Use to adjust the camera lens to focus on objects for a clear view. Click on 
<Focus +> to focus near or <Focus −> to focus far. 
Iris +/− 
This item is used to open and close the iris to let more or less light into the 
camera. Click on <Iris +> to open iris or <Iris −> to close iris. 
Zoom +/− 
Users are allowed to zoom-in or zoom-out using the adjusting buttons. 
Zoom-in to enlarge a certain area and zoom-out to view more area.   
Direction Button 
This button is used to pan and/or tilt the dome camera. Click the arrows in the 
directions to be viewed.   
6.3.2 Instant Recording 
The Instant Recording function allows users to record video quickly to the PC. 
NOTE: The Audio function is set to OFF as the default setting. 
6.3.2.1  Record Video Instantly 
Follow the steps to start recording instantly: 
• Click on the <Instant Recording> button. 
•  Select the destination folder to save the video. 
• Click on the button again to stop recording. 
NOTE: The instant recording video will be saved as *.drv file. 
6.3.2.2    Playback Instant Recorded Video 
Follow the steps to playback a video recorded by “Instant Recording”. 
• Click <Play> on main window toolbar and click <Local Playback> tab. 
• Click <Open> to choose a recorded file. 
• Click <OK> to start playing the recorded video. 










