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CrossPoint / MAV Matrix Switchers • Operation
Another way to view the volume level is to think in terms of the attenuation that
is applied to the output. Attenuation reduction is indicated by the lit or blinking
input buttons: when fewer input buttons are lit, attenuation is greater (and the
volume is quieter).
• Atminimumvolume,allinputbuttonsareunlitorbackgroundilluminated
and76dBofattenuationisappliedtotheoutput.Theaudiooutputis
effectively muted.
• TherststepofvolumeincreasecausestheInput1buttontoblink(slowly,in
the case of switchers with 12 input buttons). Attenuation is reduced by 13 dB
(63dBofattenuationisappliedtotheoutput).
• Thesecondstepofvolumeincreasereducestheattenuationbyanadditional
1dB(62dBofattenuationisappliedtotheoutput).(Onswitcherswith32
inputbuttonstheInput1buttonlightssteadily.)
• Successivestepsofvolumeincreasecauseconsecutivebuttonstorstblink,
then light steadily. (On switchers with 32 input buttons, each consecutive
button indicates a 1 dB attenuation reduction when blinking and a 2 dB
attenuation reduction when lit.)
For example:Whenlitsteadily,theInput3buttonindicatesthefollowing,
depending on the number of input buttons the switcher has:
 Switchers with 12 input buttons — 47dBofattenuationwhencompared
totheInput3buttonblinkingquickly(48dBto50dBofattenuation).
TheblinkingInput4button(45dBto46dBofattenuation)isatleast2dB
lessthanthefastblinkingInput3button(48dB–46dB)andatmost5dB
less(50dB–45dB).
 Switchers with 16 input buttons — 52 dB of attenuation when compared
totheInput3buttonblinking(53dBto55dBofattenuation).The
blinkingInput4button(49dBto51dBofattenuation)isatleast2dBless
thanthefastblinkingInput3button(53dB–51dB)andatmostandat
most6dBless(55dB–49dB).
 Switchers with 32 input buttons — 58dBofattenuationwhencompared
totheInput3buttonblinking(59dBofattenuation).TheblinkingInput
4button(57dBofattenuation)is2dBlessthanthesteadily-litInput2
button (59 dB - 57 dB).
• On switcher with 32 input buttons, the buttons’ volume indications are
additive.
For example:Input1lit(23 dB[22dB+1dB]ofattenuation reduction),Input
2 lit (2 dB[1dB+1dB]ofattenuation reduction),andInput3blinking(1
dB of attenuation reduction) indicate that the output attenuation has been
reduced by a total of 25 dB (22 dB+2 dB+1 dB=25 dB).
• Atfullvolume,noattenuationisappliedtotheoutputandallinputbuttons
are lit steadily.
Seethetableonpage3-46toreadthevolumedisplay.