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Telos Zephyr Xstream Two-Way Radio User Manual

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USER’S MANUAL

Section 13: Deep Tech Information and Troubleshooting 275

13.6.1 Diagnostic Indicators

TheXstreamhasanumberofdiagnosticindicatorstohelpintroubleshootingdifficulties.They

are:

SYNC status LED

WhenISDNisselectedfortheInterface(inthe3

rd

TELmenu),theSYNCLED(abovetheSEND

bargraph)shouldilluminatewheneverpowerisapplied.ItalsoindicatesthattheZephyr

Xstreamhasbasicfunctionality.Ifnot,theXstreamhasnotcompleteditsbootcycle,ormajor

clockproblemsexistwithintheunit.

WhenV.35isselectedfortheInterface(inthe3

rd

TELmenu)theSYNCLEDindicatesthataclock

ispresentatoneoftheV.35/X.21digitalports,anditisatthecorrectfrequencytomatchthe

Bitrate(asselectedinthefirstCODECmenu).Sincethisclockispassedthroughfromthe

CSU/DSU,itisthebestindicationthattheCSU/DSUisconne

ctedandhasatleastbasic

functionality.

Whenin“Ethernet”modeforInterfaceintheCODECmenuthesynclightwillgenerallyflash

periodicallyforabout5minutesafterconnectionisestablished.Thisisduetothefactthatwith

EthernetthereisnomasterclocksourceasthereisinV.35orISDNmode,sooneoftheunits

mustlo

ckitselftotheclockoftheotherunit.Todothiswithoutsideeffectsthechangeismade

verygraduallyanduntiltheprocessiscompletetheSYNCLEDmayflashperiodically.

RECEIVE Lock LEDs

TheLOCKLEDillumi

natestoindicatethatthedecoderisreceivingvaliddata.WhenaReceive

modecapableofindependentoperationusingthetwoBchannels(i.e.L3Dual/MonoorG.722)

isused,theLOCK1LEDindicatesvaliddatafor“Line1”whiletheLOCK2indicatesthis

informationfor“Line2”.WhenaRe

ceivemodeisusedthatrequires112/128kbpsofdataboth

LEDsilluminateoncethecorrectpairofdata‐streamsaredetected.BothLEDswillalso

illuminateifavaliddatastreamisreceivedinV.35Singlemode.

Ifthisisflashing,oroff,thereiseitheranincorrectse

ttingoftheReceivemode,SampleRate,or

BitRate(theseparametersareallsetinthesecondCODECmenu).Or,thereiscorrupteddata

beingreceived.

Ifincomingthedatasuffersfrombiterrors,theaudiowillbebrieflymutedandtheappropriate

LOCKLEDwillextinguishuntilvaliddataisreceivedag

ain.

WhenusingEthernetmodeandreceivingAAC,thelocklightwillflickeroffwhenbaddatais

received,howevererrorconcealmentmaypreventthedisruptionfrombeingaudibleinmany

cases.Ifthisisoccurringfrequentlyyoumaywishtocheckyournetworkand/orincreasethe

buffering.

NT1

U sync LED

ZephyrXstream’sbuilt‐inNT1hasanLEDontheISDNinterfacecardonthebackoftheunit.

ThisLEDis

onlyapplicableifyouareusingtheXstream'sbuiltinNT1;i.e.youareintheUSAor

Canadaandconnecteddirectlytothe2‐wireBRI"U"interface.UsersoutsidetheUSA&Canada

candisregardthisLED.

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