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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 35

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HOT TIP!

The signal fed to these inputs should normally be a mix-minus or those monitoring from the far

end will hear a delayed version of their own audio coming back to them (i.e. an echo).

See Section 10.3 for details on dealing with delay and mix-minus.

Adigitalgainadjustmentcanbeusedtoalterthesignallevelsintothecodersection.Levelscan

beincreasedbyupto12dBordecreasedbyupto12dBtoallowforequipmentvariationor

differingheadroomrequirementsatthefarend.ThisistheGainTrimselectionoftheAU

DIO

menu.Notethatbyadjustingthesignalatthispoint,youwilldecreasesystemdynamicrange

byacorrespondingamount.

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CURIOSITY NOTE!

The Telos Zephyr Xstream uses the more common pin-outs for three pin XLR inputs & outputs.

You can easily remember the correct signals when wiring connectors using the phrase

“George Washington Bridge.” Pin 1 = G = Ground, Pin 2 = W = “+” = White (typical color

in mic cable, if there is no white there will be a red conductor), and Pin 3 = B = “-” = Black.

Outputs(ReceivefromNetwork)

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

• LineLeveloutput.AmenuselectionLevelOutintheAUDIOmenuallows

adjustmentforConsumer(‐11dBu)orProfessional(+4dBu)levels.

• Clippoint:18dBabovenominallevel

• Impedance:<35Ohmx2

Ifasingl

e‐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.

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