SIR 320
SIR Infrared System
20
Copyright by beyerdynamic
Guard function (option)
Press
“CH
”
to scroll to the Guard test function
“GU”
can be displayed.
If the Guard-module is installed and the menu item is activated it can be checked by
pushing
“VOL
”.
The Guard signal will switch on for a period of 5 sec. You can hear a
clear non continuous peeping sound. If no sound is heard either the Guard module is
not installed or another problem is occurred. Pushing
“VOL
”
will stop the test
immediately.
Display if GUARD Module is installed
System parameters P1, P2, P3
Press
“CH
”
to scroll to the system parameters
“P1, P2, P3”
.
The displayed values are for testing purposes only and can not be modified.
Muting
Press
“CH
”
to scroll to
“U
”
.
This function means muting of the audio signal in the infrared field if there is a weak
signal e.g. less than 20 dBA field strength (reasonable values are 36-43 dBA field
strength). The muting function is normally on (factory default), you may see that at the
display with the letters
“on”
. Deactivation
(“oF”)
can be made with
“VOL
”
key,
activation (
“on”
) via
“VOL
”
key.
Display of the Muting function
Channel shift
Press
“CH
”
to scroll through to
“SH”
.
The Shift mode
is identified with
“SH”
and is normally in the off-position (factory
default), displayed as
“oF”
. To activate the Shift mode push the
“VOL
”
key, for
deactivate push the
“VOL
”
key. This offsets reception frequencies by 7 channels to
a higher channel position. This shifting avoids interference from lighting systems. After
activation the original floor language will be displayed as
“or”
instead of
“00”.
Display of Shift mode
