VAR4 / VAR12 / VAR20 - Operation Manual
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Page 180 of 308
13
Induction Loop Configuration
13
Induction Loop Configuration
Induction Loop is available on VAR Router SW V4.1.070 or later, and requires DSP SW
V3.1.632 or later.
Induction Loop is available on VAR Router SW V4.1.070 or later, and requires DSP SW
V3.1.632 or later.
“DSP INCOMPATIBLE” fault will be generated if the VAR Router has a non-compatible DSP
software version.
“DSP INCOMPATIBLE” fault will be generated if the VAR Router has a non-compatible DSP
software version.
!
!
The top two outputs of the VAR Router’s base unit and expand units can be configured to feed a 100V line
driving an amplifier connected to an Induction Loop System, typically the ASL ILP01 Induction Loop Panel.
The number of induction loop outputs is configurable, and the induction loop outputs are allocated from top
down, as detailed in
Table
.
14
In addition to standard parameters an Induction Loop output has the following Induction Loop specific
parameters. These menu options are only shown if the output is configured to support Induction Loop:
•
Equalisation
Frequency bands suitable for the Induction Loop type can be adjusted to achieve as flat a frequency
response as is possible.
See Section “
13.6.2 Equalisation Configuration
”.
•
Audio amplitude compression
The amount of compression and the threshold level at which the compression begins can be configured
in order to achieve the best intelligibility and general received sound quality.
See Section “
13.6.3 Audio Compression Configuration
”.
A stable signal source is required in all the commissioning stages in order to successfully configure an
Induction Loop System. The VAR Router provides test tones, which can be used during the commissioning
of an Induction Loop System. See Section “
11 Test Tone Input Configuration
” for further details.
L
In order to give the best performance to an Induction Loop System, its commissioning process
involves several steps of measurements, testing, and adjustment.
The ASL Technical Note 30 provides details of the commissioning and test procedure for an
Induction Loop System driven by the VAR Router. Please refer to Application Solutions Limited,
the current issue can then be supplied.
The following sections provide a general guidance on the parameters provided by the VAR
Router in order to configure an Induction Loop System.
Содержание VAR12
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