RAD Data comm RSD-20 operation manual Operation, Controls and Indicators, Front Panel

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3

OPERATION

3.1GENERAL

This chapter details the RSD-20 controls and indicators, their functions, and operating procedures.

The installation procedures given in Chapter 2 must be completed and checked before operation of the RSD-20 is attempted.

NOTE For an explanation of all the possible system installations of the RSD-20, refer to Chapter 4.

3.2CONTROLS AND INDICATORS

RAD RSD-20

 

 

 

 

 

 

 

SUB-CHANNEL DISABLE

 

 

 

 

ACTIVITY

 

1

2

3

4

 

AUTOMATIC

 

POWER DATA

1

2

3

4

1

2

3

4

 

 

 

 

Figure 3.1

Front Panel

Four controls and ten indicators are located on the RSD-20 front panel; two controls are located on the rear panel. Their functions are described in Tables 3.1 and 3.2.

3.1

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Contents RSD-20 DUUDQW\ 6DIHW\DUQLQJV HFODUDWLRQRI&RQIRUPLW\ Table of Contents Introduction GeneralFunctional Description Specifications Ordering IndicatorsPower PhysicalElectrical Installation InstallationPhysical Installation AC PowerInternal Switches and Strap Selection Rear PanelRear 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 Controls and Indicators OperationFront Panel 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