Beyerdynamic SIR 320 - Manual (Page 20)

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