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Telos Zephyr Xstream Two-Way Radio User Manual

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USER’S MANUAL

Section 10: APPLICATIONS GUIDE 178

h

HOT TIP!

The Sample Rate and Bit Rate must be matched for the auto mode to detect the incoming bit

stream.

Certainconventionsareusedwhichitwillhelptounderstand:

64‐ThisisaZephyrXstreamTransmitmodethatrequiresonlyasingleBchanneltooperate.

Theactualbitrateofthatchannelcouldbeeither56or64kbps.

128‐ThisisaZephyrXstreamTransmitmodethatr

equirestwoBchannelstooperate.The

actualbitrateofthosechannelscouldbeeither56kbps(foratotalof112kbps)or64kbps(for

atotalof128kbps)

Dual/Mono‐ThisissimplyaspecialcaseofMono64.IntheDual/MonocasetheAaudiosource

issentover"Line1"whil

etheBaudiosourceissentover"Line2".

J‐Stereo‐Thisis"JointStereo"andisthepreferredstereomodeinmostcases.Thebiggest

exceptioniswhenstereomaterialwilllaterbetransmittedoverasurroundsoundtransmission

system(i.e.forVideoorFi

lmproduction)inwhichcasetheStereomodeshouldbeused.All

stereomodesrequire2Bchannels(2calls)unlessotherwisestated.

J‐Stereo64‐Thismode,uniquetoAAC,istheonlystereotransmissionmodethatdoesnot

require2Bchannels.

L2Half64‐Thisisaspe

cialLayer‐2modethatoperatesat24kHzsamplerate.Theaudiowillbe

transmittedat24kHzsamplerateregardlessoftheactualsamplerateselectedintheCODEC

menu.

ThefollowingpagesshowthecorrectXstream“receive”settingsforvariouscodecs:

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