User Manual
20
4. REARPANELFUNCTIONSANDCONTROLS
fig.2
1. NETWORKPOWERSUPPLYINPUTwithfusehousing
Connecttheunittoa230V ac50/60Hznetwork(117Vac50/60HzforUSmodels)
FUSE
AUP125S:
220÷240V~50/60HzFuse:T6.3ALAC250V
110÷127V~50/60HzFuse:T12ALAC250V
AUP250S:
220÷240V~50/60HzFuse:T10ALAC250V
110÷127V~50/60HzFuse:T20ALAC250V
2. Input
Eachchannelhasitsownbalancedlinelayerinput.
3. PriorityInput
Eachchannelhasisownunbalancedprioritylinelayerinput.
Connecttheunbalancedsignalbetweenthe"+"terminalsand"earthsymbol".
ThepriorityinputhasaVOXfunctionthatcanbeconnectedanddisconnectedbymeansoftherelativePIN(Fig.2,
Ref.7):
VOXenabled– untiltheVOXcircuitdetectsanaudiosignalontheinput
“PRIORITYINCH_”(Fig.2,Ref.3),therelative“CH_INPUT”inputwill
beautomaticallymuted
andoutputwillonlyhaveaprioritysignal.
VOXdisabled– thesignalson“PRIORITYINCH_”and“CH_INPUT”inputswillbemixed
ontherelativeoutput
“cleancontact”‐Thepriorityinputalsohasa“cleancontact”thatforcesmuting
ofthe“CH_
INPUT”(Fig.2,Ref.2)input,leavingthe“PRIORITYINCH_”inputactiveregardless
ofthePINsettingsoftheDIPSWITCH(Fig.2,Ref .7).
The “CH_ INPUT” input will be muted as long as the clean contact remains closed. This
function is particularly useful with very weak “PRIORITY
IN CH_” signals, which may cause
constantconnections/disconnectionsoftheVOXfunction,resultinginalternatingoutputfrom