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Power Input
a Power receptacle — A 36 W desktop power supply is provided.
ATTENTION: When the PS 1230 power supply is connected to the MPA 401, it
must not be shared with any other devices.
Power Receptacle
DC Power Cord
Captive Screw Connector
POWER
12V
1.5 A MAX
MPA 401 series
Amplifier
DC Power
Outputs
AC Power Cord
Tie
Wrap
Captive Screw
Connector
Power Supply
Output Cord
PS 1230 Power Supply
DO NOT USE
SECTION A–A
Ridges
Smooth
Power Supply
Output Cord
AA
3/16"
(5 mm) Max.
POWER
12V
1.5 A MAX
MPA 401 series
Amplifier
Figure 3. Connecting the PS 1230 Power Supply to an MPA 401 Amplifier
Connect one end of the DC power cord to one of the two pole, 3.5 mm captive screw
outlets on the power supply. Connect the other end into the power receptacle on the
rear panel of the amplifier, as shown in figure 3 above. The power cord connectors are
correctly wired when shipped.
ATTENTION:
• AlwaysuseapowersupplysuppliedbyorspecifiedbyExtron.Useofan
unauthorizedpowersupplyvoidsallregulatorycompliancecertificationand
maycausedamagetothesupplyandtheendproduct.
• Suitableforuseinenvironmentalairspaceinaccordancewith
Section300.22.CoftheNationalElectricalCode,andSections2-128,
12-010(3)and12-100oftheCanadianElectricalCode,Part1,C22.1.
• Unlessotherwisestated,theAC/DCadaptersarenotsuitableforuseinair
handlingspacesorinwallcavities.Thepowersupplyistobelocatedwithin
thesamevicinityastheExtronAVprocessingequipmentinanordinary
location,PollutionDegree2,securedtotheequipmentrackwithinthe
dedicatedcloset,podium,ordesk.
• Theinstallationmustalwaysbeinaccordancewiththeapplicableprovisions
ofNationalElectricalCodeANSI/NFPA70andtheCanadianElectricalCode.
Thepowersupplyshallnotbepermanentlyfixedtobuildingstructureor
similarstructure.
• Althoughtheamplifierisplenumrated,thepowersupplyprovidedwithit
isnot.Thepowersupplymustnotbeplacedintheplenumspace.Cables
toandfromtheamplifiermustalsobeplenumrated.TheDCpowercord
providedwiththeunitisnotplenumrated.
• Thelengthoftheexposedwiresinthestrippingprocessiscritical.Theideal
lengthis3/16inches(5mm).Anylongerandtheexposedwiresmaytouch,
causingashortcircuitbetweenthem.Anyshorterandthewirescanbe
easilypulledouteveniftightlyfastenedbythecaptivescrews.
NOTE: Do not tin the wires. Tinned wire does not hold its shape and can become
loose over time.
MPA 401-70V and MPA 401-100V • Rear Panel and Cabling 5