Atlas AP-S20RT User manual

– 1 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
AP-S20RT
AC Power Distribution &
AC Suppressor Unit with Remote Activation

AtlasSound.com – 2 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Table of Contents
Important Safety Instructions.................................................................................................................. 3
Introduction ........................................................................................................................................... 5
Key Features and Applications ............................................................................................................... 6
Front Panel Description ........................................................................................................................... 7
Rear Panel Description ............................................................................................................................ 8
Installation and Remote Turn On Configuration ...................................................................................... 9
AC Power Cord Retainer System ..........................................................................................................10
Specifications ........................................................................................................................................11
Warranty ................................................................................................................................................ 12

– 3 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this device near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other device (including amplifiers)
that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the
other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your
safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they
exit from the device.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the device. When a cart is used,
use caution when moving the cart/device combination to avoid injury from tip-over.
13. Unplug this device during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the device has been damaged in any way, such as
power-supply cord or plug is damaged, liquid has been spilled, or objects have fallen into the device, the device has been exposed
to rain or moisture, does not operate normally, or has been dropped.
15. WARNING: To reduce the risk of fire or electric shock, this device should not be exposed to rain or moisture and objects filled with
liquids, such as a vase, should not be placed on this device.
16. To completely disconnect this equipment from the mains, disconnect the power supply cord plug from the receptacle.
17. The mains plug of the power supply cord shall remain readily operable.
The lightning flash with arrowhead symbol within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage “ within the
product’s enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.

AtlasSound.com – 4 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
When The Device Is In Use
• Topreventelectricshock,donotremovetheproductcoverastherearehighvoltagecomponentsinside.Referallservicingto
Atlas Sound.
• Shouldanyofthefollowingirregularitiesoccurduringuse,immediatelyswitchoffthepower,disconnectthepowercordfromthe
AC outlet and contact Atlas Sound. Do not to attempt to continue operation with the product as this may cause fire or electric shock:
 • Smokeorstrangesmellcomingfromtheunit.
 • Iftheproductfallsorthecaseisdamaged.
 • Ifwateroranymetallicobjectsfallsintotheproduct.
 • Ifthepowersupplycordisdamagedinanyway.
 • Iftheunitismalfunctioning.
• Donotinsertordropmetallicobjectsorammablematerialsintotheventilationholesoftheproduct'scover,asthismayresultin
electric shock or fire.
• Donotplaceanycontainerswithliquidormetallicobjectsonthetopoftheproduct.Ifanyliquidspillsintotheunit,reorelectric
shock may result.
• Neveroperatethisproductortouchthepowersupplycordduringanelectricalstorm,electricshockmayresult.
• Neverexceedthepowerratingontheproductwhenconnectingequipment.Fireand/orpropertydamagemayresult.
• Operatetheproductonlywiththevoltagespecifiedontheunit.Fireand/orelectricshockmayresultifahighervoltageisused.
• Donotmodify,kink,orcutthepowercord.Do not place the power cord in close proximity to heaters and do not place heavy objects
on the power cord, including the product itself, doing so may result in fire or electrical shock.
• Replacetheprotectivecoveroverthespeakerterminalsafterinstallation.Donottouchthe70Vspeakerterminalsaselectricshock
may result.
• Ensurethatthesafetygroundterminalisconnectedtoaproperground.Neverconnectthegroundtoagaspipeasacatastrophic
disaster may result.
• Besuretheinstallationoftheproductisstable,avoidslantedsurfacesastheproductmayfallandcause   
injury or property damage.
When Installing The Product
• Plugginginorunpluggingthepowercordwithwethandsmayresultinelectricshock.
• Nevermovetheunitwiththepowercordpluggedintothewall,asdamagetothepowercordmayresult.
• Whenunpluggingthecordfromthewall,grasptheplug,NOTthecord.
• Neverinstallthisproductinhumidordustylocations,norindirectsunlight,nearsourcesofheat,orinareaswheresootysmokeor
steam are present. Fire and electric shock may result.
• Keepallsidesoftheunitatleast31⁄2"awayfromobjectsthatmayobstructairflowtopreventtheunit'sinternaltemperaturerise.
When The Product Is In Use
• Whenpoweringtheproductupforthefirsttime,ensurethatthelevelcontrolisturneddown.Unexpectedhighsoundpressure
levels may be present at the speakers and result in hearing loss.
• Neverplaceheavyobjectsontheproduct,causingittofalland/orbreak,resultinginpersonalinjuryandpropertydamage.In 
addition, the product itself may fall and cause injury and property damage.
• Neveroperatetheproductforextendedperiodswiththesoundinadistortedcondition.Thisisanindicationofamalfunction,which
may result in excessive heat being generated and causing a fire.
• Contact Atlas Sound for instructions on cleaning the inside of the unit. Large accumulations of dust inside the unit may result in heat
buildup and fire.
• Ensurethatthepowersupplyplugissecurelypluggedintothewalloutlet.Neverallowdusttoaccumulateonthepowerplugor
inside the wall outlet.
• Whencleaningtheunitortheunitisnottobeoperatedforanextendedperiod,unplugthepowercordfromthewall.
CAUTION
WARNING
CAUTION

– 5 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Introduction
Thank you for purchasing the Atlas Power AP-S20RT AC Distribution and Suppressor Unit. The AP-S20RT has been designed to meet
most installation requirements for AC power distribution and equipment power protection. To light your rack, the AP-S20RT incorporates
afrontpanelUSBportforlightingandequipmentcharging.TherearoftherackcanbeilluminatedbytheoptionalAP-GNL18gooseneck
LEDlampconnectedviaanXLRstylesocket.LEDlampsarefarsuperiorinlongevityalongwithheatreductionwhencomparedto
traditionalincandescentlamps,andtheXLRinputoffersabetterconnectionpointovercommonlyusedBNCtypebases.
ByutilizingtheRemoteActivationfeature,upto20AofcleanelectricalpowercanbeswitchedOnorOffwithasimplelatcheddry
contactclosure.Withtheclosureoftheremoteactivationswitch,12VDCat100mAisavailabletopoweraremotestatusLED.
AnEmergencyPowerDownfunction,orEPD,canalsobecreatedbyusingtheRemoteActivationfeaturebysimplykeepingthe
Remote Activation contact closed until a condition occurs that requires a system shut down. When the contacts are opened, it will
remove power from the switched outlets to protect equipment. A rear mounted bypass switch disables the Remote Activation should
the need arise.
The AP-S20RT features noise filtering for unwanted Radio Frequency Interference (RFI) that is commonly introduced into AC lines by
nearbyradiotransmittersorwirelessproducts.EMIfiltersareincorporatedtoreducenoiseandElectromagneticInterference(EMI)
from such items as electric motors and external switching power supplies. The benefit of these filters can be seen on video products or
audibly by reducing static pops and external signal interference.
UnstableACMainsvoltageisoneofthemainreasonsforequipmentfailure.Theamountofenergythatcanbeinjectedintothepower
systemcanbeimmensewithvoltagesreaching6kVoramperagepeaksof3000A.Thesespikesareveryfastandusuallyonlylastfor
a very short period of time. The AP-S20RT’s circuitry is very fast and can suppress unwanted energy within a nanosecond response
and sustain the suppression up to 2 milliseconds, thus ensuring virtually trouble-free protection. If damage to the suppression circuitry
occurs,theACfaultLEDwillilluminate.
TheAP-S20RTincorporatesEVS(ExtremeVoltageShutdown)toremoveACpowerfromdevicespluggedintotheswitchedoutletsin
theeventofunsafehighorlowvoltageconditions.AconvenientfrontpanelLEDindicatesifshutdownhasoccurred.
The AP-S20RT offers power management control, noise filtering, and over/under voltage and spike/surge protection to make it the most
compact, effective power management protection system on the market today.

AtlasSound.com – 6 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Key Features
 • 9TotalOutlets
 • 6RearPanelSwitchedOutlets
 • 2RearPanelUnswitchedOutlets
 • 1FrontPanelUnswitchedConvenienceOutlet
 • RemoteActivationviaLatchedDryContactClosureorDCVoltage
 • RemoteStatusLEDPowerTerminals
 • RearMountedRemoteActivationBypassSwitch
 • EPD(EmergencyPowerDown)toIncorporateWithFireControlPanels
 • EVS(ExtremeVoltageShutdown)ClampingSpike&SurgeSuppressionCircuitry
 • RFINoiseFilteringtoReduceRadioFrequencyInterference
 • EMIFilteringtoReduceElectromagneticInterference
 • CircuitBreakerProtection@20A
 • FrontMountedUSBCharger/LightPort
 • RearMountedXLRConnectorFor12VDCLEDLamp(AP-GNL18)(LampSoldSeparately)
 • SpikeSuppressionUpTo6000V
 • ACFaultIndicator
 • ACPowerCordRetainerSystem
Applications
TheexibleAP-S20RTwasdesignedwithfeaturestobeusedinavarietyofapplications.TheAP-S20RTcanbeusedsolelyforprotection
against voltage surges or for AC distribution. The AP-S20RT can also be used for power conditioning to eliminate or reduce fuzzy video or
frequency audio static pops. The following are just a few examples of applications where the AP-S20RT can be used:
 • Restaurants
 • HousesofWorship
 • Schools
 • HomeTheaters
 • OfficeBuildings
 • SportsBars

– 7 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Front Panel
1. Unswitched AC Outlet
The120VACoutletisalwayslivewhentheAP-S20RTpowercordispluggedintoanACmainspowersourceandvoltageispresent.
Note: The AC mains power switch does not affect the Unswitched AC Outlet but it is protected with surge protection circuitry.
2. AC Mains Breaker
The 20A rated breaker will open if the combined draw of all AC outlets exceeds 20A. Note: The breaker is designed to exceed its rating
for a short period of time. If the breaker is tripped, you must first remove the load from the AP-S20RT and then push to reset.
3. Power Switch
ToturntheAP-S20RTOnorOff,presstheswitchtotheONorOFFposition.(SeerearpanelRemoteBypassSwitch)
4. USB Port 5VDC 1A
ConvenientUSBportforconnectingUSBracklightingorforchargingexternaldevicebatteries.Note: Will not charge all products. Some
devices require licensed charging circuitry.
5. Power ON Indicator
WillilluminateBluewhentheACMainsPowerSwitchisintheONPosition.
6. AC Fault Indicator
AlthoughtheClampingSuppressioncircuitvirtuallyassuresprotectionfrommosttransientvoltagespikesandsurges.Naturehasa
way of occasionally creating electrical forces that are beyond the capabilities of any device to absorb without some degree of damage.
Intherareinstancethatthisoccursandthecircuithasbeendamaged,theRed“ACFault”LEDindicatorwillilluminateandaninternal
buzzerwillsound.TheAP-S20RTwillshutoffpermanentlyuntiltheunitisrepaired.Beadvisedthatactivationofthisfaultconditionand
the associated repair is not covered under warranty. Note:IftheACFaultLEDisilluminated,itisimportanttohaveallequipmentthat
wasconnectedtothatACMainsLinebeinspectedforproperoperation.
7. EVS Protect Indicator
ThisLEDwillilluminatewhenanextremeoverorundervoltageconditionhasoccurred.Apowerlinevoltagebelow95VACorabove
140VACwilltriggertheEVScircuitry,removingpowerfromtheswitchedoutlets.Thisabnormalvoltageconditionmustbecorrected
before the AP-S20RT can be reset.
1 2 3 45 67

AtlasSound.com – 8 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Rear Panel Features
1. AC Mains Input
Connectthe14Gauge9'(3m)powercordtoa20A120VACoutlettoprovidepowertotheAP-S20RT.
2. AC Power Outlets
These six outlets are “Live” when the front panel power switch is activated. The two Unswitched Outlets are always live if the power
cordisconnectedto120VAC.
3. XLR Light Socket
A12VDCXLRlightsocketprovidespowerfortheoptionalAL-GNL18light.
4. Light Socket Power Switch
Two-positionswitchtopowerOn/OfftheXLRlightsocket.
5. Remote Activation
There are two methods to remotely activate the AP-S20RT:
A. External Switch-TheExtSWterminalsareconnectedtoalatchingtypedrycontactclosuretoactivatethe  
AP-S20RT. Note:TheRemoteBypassswitchmustbeshortedforRemoteActivation.Thisfeaturecanbeusedfor 
 EmergencyPowerDown(EPD),whentiedintoanormallyclosedlatchingcontactclosure(e.g.FirePanel).
B. DC Voltage-Whenyouapply5V-24VDCtotheExtSWterminalstheunitwillactivate.See“RemoteActivation 
Drawings” for details.
Theterminalsmarked“+12V”and“GND”canbeconnectedtoaremotepanelLED(notincluded)toindicatefunctionwhenremotely
activated.
12345

– 9 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Installation
Beforeinstalling,itisrecommendedtoreadtheentiremanualtoensureproperoperationandthatallfeaturesarebeingutilized.The
AP-S20RT can be placed on a shelf or rack mounted in a standard 19" width rack. When rack mounted, placement within the rack is
exiblehowevertheAP-S20RTshouldbewithin6'ofadedicated20AACoutlet.Whenrackmounting,useRackRailtypescrewsof
10⁄32"x1".Alwaysmakesurethe20AoutletisproperlyinspectedbyacertiedelectricianpriortoconnectingtheAP-S20RT.Makesureto
inspect the equipment that will be connected to the AP-S20RT to ensure it does not exceed 20A total amperage draw.
Remote Activation Connections Diagram
Remote Activation via Hard Contact Switch
UseExternalKeyorPanelSwitch,HardContact
ToRemotePanelLED,Usethe+12andGNDTerminals.
Note: Use a 2K ohm 1⁄8WResistorInSerieswith+12VDCandLED
RemoteVoltageActivation
Apply+5V–24VDCandConnectaGroundtotheGNDTerminal
to Activate the Unit.
Note: It is OK to Have Two Wires In the Same Terminal.
ToRemotePanelLED,Usethe+12andGNDTerminals.
Note: Use a 2K ohm 1⁄8WResistorInSerieswith+12VDCandLED

AtlasSound.com – 10 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
AC Power Cord Retainer System
5. Feed the end of the zip tie through the retainer and pull tightly
to secure. Note: Some adjustment of the retainer may be
needed in order to properly align it as shown in Figure 6.
6. Cut the excess zip tie off as shown in Figure 7.
YourAtlasPowerproductcomeswithanACMainsPowerCordRetainerSystem.Thissystempreventsthepowercordfrombeing
removed without the use of a screwdriver. Follow these steps for installation.
Note: Installation of this product must be done by a certified electrician.
1. Locate the 6/32 screw, retainer clip, and zip tie.
2. Locate the AC wall outlet that will be used to power the
Atlas Power product. Remove the center screw securing the
cover plate to the AC outlet.
3. Place the screw through the retainer clip and insert into the
cover plate making sure to securely tighten. Inset the zip tie
through the retainer clip slots as shown in Figure 3.
4. Wrap the zip tie around the power cord as shown in Figure 4.
Figure 1
Figure 5 Figure 6
Figure 7
Figure 4
Figure 2 Figure 3

– 11 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Specifications
Type PowerConditioner&Suppressor
Load Rating 20A
SafetyListings ETL(UL60065Standard)
Front Panel
Outlets 1 Unswitched
USBPort 1USBCharge/LightPort(5VDC,1A)
Activation Switch Rocker
CircuitBreaker 20AResettable
Indicators ACPowerOn,ACFault,EVSProtect
Rear Panel
AC Outlets 8 Outlets Total
LEDLightSocket XLRSockettoProvide12VDCforOptionalAL-GNL18GooseneckLamp
LEDLightSwitch Twoposition(On/Off)
RemoteActivation LatchingTypeDryContactClosureor5V-24VDC
Remote Activation Connector 4 Position 3.5mm Phoenix Type Connection
ACMainsPowerCord 9'(2.74m),12Gauge,20AMaleACPlug
Technical Data
Current Rating 20 Amps
OperatingVoltage 102VAC-132VAC
Power Consumption 8 Watts
Min.SpikeClampingVoltage 460VRMS@3,000A
Max.SpikeClampingVoltage 6000V
Max.SpikeClampingResp.Time 1Nanosecond
SpikeClampingVoltage@100A 1250Vpfor20µs
MaximumSurgeCurrent 6,500A
EnergyRating@2ms 600Joules
NoiseAttenuationRFI 10dB@10kHz/40dB@100kHz/100dB@10MHz
EVSLimits 95VACLow,140VACHigh,AutoReset
TemperatureRange 5°–35°C
Humidity Range 5% to 95% Relative Humidity
Mechanical
ChassisFinish Black
Mounting RackMount,1RU
Height 1.75" (1RU, 44.5mm)
Width 19" (482.6mm)
Depth 8" (203mm)
Weight 5.5 lbs (2.49kg)

AtlasSound.com – 12 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20RT
AC Distribution & Suppressor Unit
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Limited Warranty
All products manufactured by Atlas Sound are warranted to the original dealer/installer, industrial or commercial purchaser to be free
from defects in material and workmanship and to be in compliance with our published specifications, if any. This warranty shall extend
fromthedateofpurchaseforaperiodofthreeyearsonallAtlasSoundproducts,includingSOUNDOLIERbrand,andATLASSOUND
brand products except as follows: one year on electronics and control systems; one year on replacement parts; and one year on
MusicianSeriesstandsandrelatedaccessories.Additionally,fusesandlampscarrynowarranty.AtlasSoundwillsolelyatitsdiscretion,
replace at no charge or repair free of charge defective parts or products when the product has been applied and used in accordance
with our published operation and installation instructions. We will not be responsible for defects caused by improper storage, misuse
(including failure to provide reasonable and necessary maintenance), accident, abnormal atmospheres, water immersion, lightning
discharge, or malfunctions when products have been modified or operated in excess of rated power, altered, serviced or installed
in other than a workman like manner. The original sales invoice should be retained as evidence of purchase under the terms of this
warranty. All warranty returns must comply with our returns policy set forth below. When products returned to Atlas Sound do not
qualify for repair or replacement under our warranty, repairs may be performed at prevailing costs for material and labor unless there is
included with the returned product(s) a written request for an estimate of repair costs before any nonwarranty work is performed. In the
event of replacement or upon completion of repairs, return shipment will be made with the transportation charges collect.
EXCEPTTOTHEEXTENTTHATAPPLICABLELAWPREVENTSTHELIMITATIONOFCONSEQUENTIALDAMAGESFORPERSONAL
INJURY,ATLASSOUNDSHALLNOTBELIABLEINTORTORCONTRACTFORANYDIRECT,CONSEQUENTIALORINCIDENTALLOSS
ORDAMAGEARISINGOUTOFTHEINSTALLATION,USEORINABILITYTOUSETHEPRODUCTS.THEABOVEWARRANTYISIN
LIEUOFALLOTHERWARRANTIESINCLUDINGBUTNOTLIMITEDTOWARRANTIESOFMERCHANTABILITYANDFITNESSFORA
PARTICULARPURPOSE.
Atlas Sound does not assume, or does it authorize any other person to assume or extend on its behalf, any other warranty, obligation,
or liability. This warranty gives you specific legal rights and you may have other rights which vary from state to state.
Service
Should your AP-S20RT require service, please contact the Atlas Sound warranty department at
1-877-689-8055, ext. 277 to obtain an RA number.
Atlas Sound Tech Support can be reached at 1-800-876-3333.
Visitourwebsiteatwww.AtlasSound.comtoseeotherAtlasproducts.
©2011 Atlas Sound L.P. All rights reserved. Atlas Sound is a trademark of Atlas Sound L.P.
All other trademarks are the property of their respective owners. ATS004051 RevB 12/11