RAD Data comm Synchronization on RSD-20 Internal Clock, Synchronization on Internal Clock

Page 14

INSTALLATION

RSD-20 OPERATOR'S MANUAL

2.5.1.2 Synchronization on RSD-20 Internal Clock

a)RSD-20 baud rate should be strapped to the required speed.

b)DCEs attached to sub-channels should be strapped to external clock.

c)DCE attached to main channel should be strapped to external clock.

 

EXT. CLK

RSD-20

 

 

 

 

 

 

DCE

 

SUB DTE

EXT. CLK

DCE

 

 

EXT. CK

 

 

EXT. CK

 

 

 

 

TX. CLK

MAIN

 

 

 

 

 

 

 

 

DTE

 

 

 

 

SUB-CHANNEL

 

 

 

 

SUB DCE

TX. CLK

DTE

DTE

TX. CLK

 

MAIN

 

 

EXT. CK

 

DTE

 

 

Figure 2.5

Synchronization on Internal Clock

2.6

Image 14
Contents RSD-20 DUUDQW\ 6DIHW\DUQLQJV HFODUDWLRQRI&RQIRUPLW\ Table of Contents Functional Description IntroductionGeneral Specifications Ordering IndicatorsPower PhysicalElectrical Installation InstallationPhysical Installation AC PowerRear Panel Internal Switches and Strap SelectionRear Panel Installation Installation Synchronization on Main Channel Modem Clock System Synchronization and Clock DistributionRSD-20/V.35 Synchronization on Main Channel Modem’s ClockSynchronization on RSD-20 Internal Clock Synchronization on Internal ClockRSD-20 Synchronization on Sub-channelMain channel is DTE attached to a modem RSD-20/X.21External Clock for more than one Sub-channel Main and all sub-channels are DCE attached to DTEsMain channel is DCE and sub-channels are mixed DTE and DCE Front Panel Controls and IndicatorsOperation Power Turn Off Operating ProcedurePower Turn On OperationOperational Field Strapping Changes Fault Isolation ProcedurePower Supply RSD MalfunctionTheory of Operation and Applications ContentionSUB-CHANNEL Disable IntroductionSub-channel Control Signals Control SignalsMain Channel Control Signals RSD-20/V.35RSD-20/X.21 Theory of Operation and Applications RSD-20 Operators Manual Theory of Operation and Applications Applications RSD-20 Operating ModesTable A.1 X21 Interface Signal Description Appendix aTable B.1 Interface Signal Description Appendix B