Metal Compensation
If high metal content is present in, or near, the hearing loop, the sound heard by the loop
listening device may be ‘woolly’ or ‘dull’. To rectify, select the
Metal Comp
display and press
the
Down
and
Up
4
control buttons until a natural balance is achieved.
VU
Down
Up
min
max
Phantom Phase
Limit Peak
1 2
Metal Comp
Loop 1 Drive
Digital
Fault
HOT!
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SigNET PRO Range Instructions
Approved Document No. DAU0000105 Rev 2
Digital (Model Dependent)
This menu display can be used to adjust the sensitivity of the digital input signal.
Select the
Digital
display and press the
Up
4
and
Down
control buttons to adjust the
digital input level.
VU
Digital
Outreach
Metal Comp
Down
Up
min
max
Phantom Phase
Limit Peak
Fault 1 2
HOT!
Outreach
This menu display can be used to adjust the sensitivity of the outreach plate input signal.
Select the
Outreach
display and press the
Up
4
and
Down
control buttons to adjust the
outreach input level.
VU
Outreach
Phantom
Digital
Down
Up
min
max
Phantom Phase
Limit Peak
Fault 1 2
HOT!
Phantom
This menu display is used to apply optional 12V phantom power for use with electret
microphones. By default, the amplifier will have phantom power turned off.
Select the
Phantom
display and press the
On
4
and
Off
control buttons to toggle
microphone phantom power on and off, as shown below.
VU
Phantom
Microphone
Outreach
Off
On
min
max
Phantom Phase
Limit Peak
Fault 1 2
HOT!
VU
Phantom
Microphone
Outreach
Off
On
min
max
Phantom Phase
Limit Peak
Fault 1 2
HOT!
The SigNET PRO Range amplifiers are fully
compatible with the outreach plate audio
input extension system. This system allows
the connection of multiple microphones,
or line level inputs via a range of specially
designed wall, ceiling or desk-mountable
single gang plates.
Up to ten outreach plates (any mix) can be
daisychained to the amplifier’s ‘outreach’
connector with cable lengths up to 100m
(total network length) easily achievable
using standard two pair audio cable such as
Belden 8723 - see typical wiring diagrams.
Please contact SigNET technical
department for more information.
PRO RANGE
4-WAY OUTREACH
CONNECTOR
A +
A -
V+
0V
OUTREACH PLATE
AUDIO INPUT
A OUT +
A OUT -
A IN +
A IN -
V+
GND
GREEN (A+)
WHITE (A-)
RED (V+)
BLACK (GND)
OUTREACH PLATE
AUDIO INPUT
A OUT +
A OUT -
A IN +
A IN -
V+
GND
GREEN (A+)
WHITE (A-)
RED (V+)
BLACK (GND)
A
B
D
C
E
F
A
B
D
C
E
F
MULTIPLE OUTREACH PLATE WIRING CONNECTIONS
TO NEXT
OUTREACH
PLATE
PRO RANGE
4-WAY OUTREACH
CONNECTOR
A
B
C
D
E
F
SINGLE OUTREACH PLATE
WIRING CONNECTIONS
e.g. APL / APM Outreach Plate
A OUT-
A OUT+
V+
GND
A+
A-
V+
0V
A
F
E
B
C
D
RED (V+)
GREEN (A OUT+)
WHITE (A OUT-)
BLACK (GND)
NOT USED
NOT USED
GREEN (A+)
BLACK (GND)
RED (V+)
GREEN (A+)
WHITE (A-)
RED (V+)
BLACK (GND)
WHITE (A-)
A IN+
A IN-
This output may be used to connect multiple SigNET PRO
Range hearing loop amplifiers to cover larger areas.
The audio line output should be wired with Ve from
A+, signal -Ve from A- and screen from 0V, as shown right.
The amplifier mixes and amplifies the microphone, line in,
outreach input signals, optical (model dependent) and sends
this signal through the Line Out connector before feeding
them through the AGC circuitry.
PRO RANGE
3-WAY LINE OUT
CONNECTOR
0V
A-
A+
BLACK (GND)
GREEN (A+)
WHITE (A-)
Outreach Connector
Line Out Connector
AMPLIFIER CONNECTIONS
10 of 16
SigNET PRO Range Instructions
Approved Document No. DAU0000105 Rev 2
