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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 55

• Bridging≥10Kohmimpedance



Theinputsaredesignedtobesourcedfrombalanced,signals.Olderequipment(orsome

microphones)withatransformeroutputstagemayneedaterminatingresistor(usually600

ohms)acrosspins2and3,consultthemanualforyourequipmentforhowtouseitwithhi

gh

impedanceinputs.

Unbalancedsourcesmaybeusedbyconnectingpins3tothesourceground,whilethesignal

highisconnectedtopin2.Werecommendleavingpin1(ground)unconnected,asthis

arrangementwillpreventthepossibilityofgroundloops.

h

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.

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CURIOSITY NOTE!

The Telos Zephyr Xstream 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.

Local Monitor Mix 1 Outputs

SeetheSection3.3forinformationonthisheadphoneleveloutput,locatedonthefrontpanel.

OnunitswithrevFaudioboardsthismixcanbeoutputontheXLRsinsteadofLocalMonitor

Mix2.

Local Monitor Mix 2 Outputs

MONITOR MIX

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