Bosch Appliances Webcam 3922 988 43318 User Manual

Bosch Security Systems | 04-2003 | 3922 988 43318 en

Digital Congress Network | Installation  and Operating Manual | Chapter 6 - DCN Camera Control

en | 6-8

Switching options using a personal computer

6.3   Switching options using a personal computer

Using the communication port (COM-port 2) of a PC, a wide variety of communication and 
switching options are available. For example, video cameras can be switched and directed towards 
speaking delegates when a VCS (Video Control Switcher) is connected to the PC. Using DCN’s 
Microphone Management software LBB 3570, and/or Synoptic Microphone Management software 
LBB 3571, cameras can be switched corresponding to the status of delegates’ microphone actions. 
Directing a camera towards a speaking delegate is done using motor driven pan/tilt equipment, 
programmed and linked according to the microphone activity function which can be activated within 
the mentioned software packages.

NOTE: 

Using this method of switching options is a custom made alternative for ‘Automatic 

camera’ control with Allegiant video switchers. The equipment required including the software 
are NOT supplied by BOSCH Security Systems. See also the DCN manual for External Inter-
faces.

 gives an example, showing the method used to switch and direct video cameras using the 

PC’s COM 2 port and a video control matrix. Using the PC’s RS232 communication port, video 
recording equipment can also be switched.

 show the default COM-port setting.

FIG 6-5  Using microphone activity for video switching

Microphone on:

$1 <SEAT NUMBER> CR LF

Microphone off:

$2 <SEAT NUMBER> CR LF

Request on:

&1 <SEAT NUMBER> CR LF

Request off:

&2 <SEAT NUMBER> CR LF

All requests off:

&3 0000 CR LF

Priority on:

#1 <SEAT NUMBER> CR LF

Priority off:

#2 <SEAT NUMBER> CR LF

5

3

2

1

4

VIDEO CONTROL 
SWITCHER

Key to symbols

1. DCN trunk-line
2. COM-port 2
3. Video OUT
4. Video IN
5. Control signals for camera 

system