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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 264

3. Verifythattheversionnumberofthisboardis1401‐00008‐006(RevF)or

later.

4. LocatejumpersJP7andJP8ontheMICAudioBoard.Thesearelocatednear

theleftedge,abouthalfwayback.

5. MovethejumperblocksfromtheNormalposition(towardsthebackofthe

unit))totheMoni

tor1position(towardsthefrontoftheunit).

Enabling PS2 power on the ISDN S interface

EarlyrevXstreamshavetheabilitytoprovidepowerontheISDNSinterface(topowera

telephoneforexample).

Pins7&8oftheISDNSinterfaceontheseunitscansupply‐48VDCtoanexternaldevi

cesuch

asatelephone.Thiscanbedisabled,whichisthedefaultsetting.

w

IMPORTANT TIP!

Leave this power source disabled unless you know how you will be using it.

Under no circumstances should this power be enabled if the "S" interface will be shared with

a Zephyr Classic or ZephyrExpress.

ToenablePS2power(ifpresent):

1. Removethetopcoverasdescribedabove.

2. IfoptioncardsarepresentinInterfaceslotsBandCremovetheISDNcard

(ifnoothercardsareinstalledyoucanchangethejumpersettingswithout

removingtheISDNcard).

3. LocatejumpersJP1&JP3.Thesearelocatedabovethecenterofthe

conne

ctorthatplugsintothemotherboard.

4. Removethejumperblocksfromthetoptwopinsoftheseheadersand

relocateconnectingthelower2pinsofthoseheaders.(NOTE:JP2should

alwaysbeinthedownposition).

5. Replacethetopcoverasdesc

ribedabove.

User installable sub-assemblies

Theadventofsurfacemounttechnologyhashelpedtolowerthecostofelectronicsand

improvetheirreliability.Unfortunately,thistechnologyalsorequiresspecializedtoolsand

knowledgeformostrepairs.High‐speedDSPtechnologyrequiresadvancedtrainingto

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