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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 48

PIN FUNCTION

1* DCD (Xstream to Computer)

2 RD (Xstream to Computer)

3 TD (Computer to Xstream)

5 Ground

6* DSR (Xstream to Computer)

8* CTS (Xstream to Computer)

* These handshake signals are present (i.e.

permanently asserted) on motherboard versions

"E" and later

Using a 9 pin female D-Sub connector, this is an RS-232 serial port using the standard PC-

style format, configured as if it were a modem. Zephyr Xstream ignores any incoming

handshake signals.

Acomputerpluggedintothisportcancontrolthesystem,andcanaccessanumberofspecial

diagnosticmodes,asdescribedinSection12(SystemFunctions&RemoteControl).Itisalso

possibletoconnecttotheZephyrXstream’scommandlineusingTCP/IP(seebelow).

Whenusedforlocalcontrolthisfunctionisalwaysavailable.Formoreontheloc

alcommand

setseeSection12.

Thisportcanalsobeplacedina“transparentmode”toallowcommunicationwithanother

Zephyr(Layer‐3only)orZephyrXstream(Layer‐3&AAConly).Notesingle‐direction

communicationispossibleifthecorrectcodingmodeisonlyuse

dinonedirection.

ThefollowingtablesshowtherecommendedcableconfigurationforconnectingtheTelos

ZephyrXstreamto9‐pinand25‐pinDTE(computer)serialports.

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