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
