VARI-directional array
Installation | en
13
Bosch Security Systems B.V.
Installation manual
2018.06 | V1.3 |
Connection
Required?
Cable type
Section
Audio input 1 (line
level)
One of these inputs is
always required unless
system uses CobraNet®.
Others are optional.
1-pair audio cable
Audio inputs,
page 13
Audio input 1 (100 V)
2-core speaker cable
Audio input 2 (line
level)
1-pair audio cable
Audio input 2 (100 V)
2-core speaker cable
Backup DC power
Optional
2-core mains cable
Backup DC power
supply, page 14
Failure relay
Optional
2-core low current
cable
Failure relay,
page 14
Control input
Optional
2-core low current
cable
Control input,
page 14
RS-485 network in
Optional
Network cable with 2
twisted pairs and
individual screens
RS-485 network,
page 14
RS-485 network thru
Optional
CobraNet® input
Optional - required when
system uses CobraNet®
CAT-5 network cable
CobraNet® input,
page 15
4.2.1
AC mains supply
For ease of installation, the VARI base unit is delivered with a rewireable angled IEC mains
power cable connector. Only this connector may be used and should be fitted to a power cord
of the required length. Refer to section
Connector and wiring details, page 23
.
4.2.2
Audio inputs
The VARI base unit provides two input channels that accept audio signals at either line level (0
dBV), or from a 100 V line speaker distribution system. Use the line level inputs if the signal
source is a standard item of audio equipment such as a mixer. Use the 100 V inputs if the VARI
is being installed as part of a system which uses other 100 V line loudspeakers. The line level
inputs are transformer-balanced, and the 100 V inputs transformer-coupled. For the input type
being used, Input 1 should be connected to the “normal” signal source. Input 2, if used, may
be connected to a secondary audio feed, such as the output of a paging system, spot
announcement player or emergency announcement system.
Refer to section
Line level input 1 (4) and 2 (5), page 25
and
100 V input 1 (6) and 2 (7), page
25
for wiring details.
