Speco Technologies 16TH User Manual

Page of 175
User’s Manual 
DVR-4TH/8TH/16TH Series 
SPECO TECHNOLOGIES 07/10
 
18 
Main Monitor (S-Video/ BNC/ VGA) 
S-Video, BNC, and VGA output connectors are available for connecting to a 
main monitor. The main monitor displays live image and playback recorded 
video in full-screen or multiple window format. 
 
Digital Output (Main Monitor) 
A digital output connector is provided for connection to a displaying device 
that transfers data digitally to show the best video quality. 
 
Call Monitor (BNC) 
The call monitor is used to display full screen video of all installed cameras in 
sequence. The BNC call monitor connector allows the user to connect an 
optional call monitor to the DVR-4TH/ 8TH/ 16TH series unit. Reference to 
dual monitor support in section Dual Main Output
 
Video Input 
A group of BNC connectors is provided for video input streams from installed 
cameras. The number of connectors equals to the number of channels. The 
DVR-4TH/ 8TH/ 16TH series unit has 4/ 8/ 16 BNC connectors on the rear 
panel, respectively. 
 
Video Looping 
The other group of BNC connectors positioned on the rear panel is for looping 
out video input.   
 
RS-232C 
The unit provides a RS-232C communication port for sending and receiving 
signals. 
 
Alarm I/O & RS-485 Ports 
The unit provides Alarm I/O and RS-485 ports that offer users the flexibility 
required to connect the unit to other devices.   
 
Refer to appendix Alarm I/O Pin Definition for detailed pin definition on the 
Alarm I/O for the DVR-4TH/ 8TH/ 16TH series unit. 
 
NAS 
The DVR-4TH/ 8TH/ 16TH series unit can connect to a Network Attached 
Storage (NAS) device through this connector to increase storage space and 
allow vast recording.