No. Jumper Type
Description
Value
Setting
4
2-pin jumper (X6) Maximum
permissible load
10 W (default)
–
This setting determines
the overload detection
level. Use this jumper
setting if the
loudspeaker load is
10 watts or less.
Note: If a PRS-4B125
amplifier is used, a 33 ohm
> 3 watt resistor must be
used in series with the
loudspeaker connected to
the tap-off of the Isolator
Board.
6
2-pin jumper (X7) Maximum
permissible load
+ pilot tone filter
10 W + 20 kHz pilot
tone attenuation of
15 dB at 10 watt
load
–
This setting determines
the overload detection
level. Use this jumper
setting if the
loudspeaker load is
10 watts or less and
20 kHz filter is required.
Note: If a PRS-4B125
amplifier is used, a DC
Blocking Board or a 33 ohm
> 3 watt resistor must be
used in series with the
loudspeaker connected to
the tap-off of the Isolator
Board.
7
3-pin jumper
(X402)
Tap-off open
circuit detection
ON (default)
–
Can be used for
installation options 1 or
2.
Note: For installation option
2, an end-of-line resistor
must be used on the tap-off.
OFF
–
Must be used for
installation option 3.
8
3-pin jumper
(X401)
Tap-off short
circuit detection
ON
–
Can be used for
installation option 2.
OFF (default)
–
Must be used for
installation option 1 and
3.
44
en | Configuration
Loudspeakers Line Isolator System
2014.03 | V1.1 |
Installation and Operation Manual
Bosch Security Systems B.V.
Содержание PM1-LISD
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