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Telos Zephyr Xstream Two-Way Radio User Manual

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USER’S MANUAL

Section 3: GUIDED TOUR of the HARDWARE 56

LocalMonitorMix2canbesetuptomonitorSnd(send)Audio,Rcv(receive)Audioora

combinationofboth.Theaudiotobemonitorediscontrolledbythebuttonadjacenttothe

headphone4knobonthefrontpanel.Theratioofsendtoreceiveaudioandotherparameters

aresetupintheseventhAUDIOmenu

.Headphones2–4haveindividualfrontpanelvolume

controls.TheAandBlineoutputsareat+4dBunominallevel.

Thesearestandard¼”stereojacks.Theyaredesignedtohandleheadphoneswithimpedances

downto10ohms.Theoutputlevelisapprox3wa

ttsinto20ohmsandwillvarydependingon

theheadphoneimpedance.

XLR Monitor Mix Outputs

BydefaulttheseXLRoutputsarefedfromLocalMonitorMix2.OnunitswithrevForlaterMIC

AudioBoards(part#1401‐00008‐006orlater)theunitcanbeconfiguredtobefe

dfromLocal

MonitorMix1.TheseareXLRmalesocketswiththefollowingpinouts.

PIN FUNCTION

1 Ground

2 Audio +

3 Audio -

Theanalogaudiooutputshavethefollowingcharacteristics:

• Activedifferential

• Outputlevel;LineLeveloutputat+4dBunominal.TheLevelOutoptionin

theeighthAUDIOmenuallowsselectionforConsumer(‐10dBu)or

Professional(+4dBu)outputlevelsfortheseoutputs.18dBheadroomis

provided(+2

2dBumaximumoutputlevel).

• Impedance:<33ohmx2

Ifasingle‐ended(unbalanced)outputisrequired,connectbetweengroundandeitherofthe

outputpins.Donotgroundtheunusedpin.Usethesamepinonbothoutputstomaintain

phase.

AC (Mains) power

TheACreceptacleconnectsmainspowertotheunitwithastandardIEC

(InternationalElectrotechnicalCommission)powercordandprovidesanon/off

switch.Thepowersupplyhasa“universal”ACinput,acceptingarangefrom

100to240VAC,50‐60Hz.Afuseislocatedinsideonthepowersupplycirc

uit

board.

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