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Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation and Operating Manual | Chapter 10 - Installation Techniques
en | 10-13
Computer Based Systems
PC system for 270 PCF
FIG 10-18 shows a PC system catering for 270 PCF. An Audio Media Interface Unit LBB 3508/00 is
used to extend the system by 90 PCF. Because the Network card (PC) has no loop-through facility, a
trunk splitter LBB 4114/00 is used.
FIG 10-18 PC Control for a PCF of 270
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Rec.
Port 1
Port 2
Line
In
Out
In
Out
Symmetrical
Trunk
115 V-T4A 230 V -T2A
115
VT4A
230 V
T2A
Output 1 Output 2 Output 3 Output 4 Trunk Tap-off
PC SYSTEM
FOR 270 PCF
NOTE: The above example uses the IN-DIRECT method of connecting the PC to the DCN
trunk-line cabling
LBB 3500/15 or /35
PCF ≤ 180 (max.)
PC
PC Network Card
LBB 3510/00
LBB 4114/00
LBB 4116/xx
PCF ≤ 90 (max.)
LBB 3508/00