Installation
53796
3-33
3.9.5
VBUS Wiring
The VBUS is an analog voice bus that carries the recorded voice messages from the VIP-
VCM to the VIP-125s, or the voice messages generated from a system microphone to the VIP-
125s. The maximum resistance on the VBUS is 20
Ω
.
Connect the VBUS from the VIP-VCM to the VIP-125s as shown in Figure 3-31.
Figure 3-31 VBUS Wiring
UL Listed 15
k
Ω
EOL (Model 7630)
at Last panel
on the VBUS
Supervised
Power Limited
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