American Telecom AM64/128A manual 5 64k Mode, Power Level, Menu Lock

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Configuration Menu	AM64/128A User Manual

5.7.5 64k Mode

This mode is designed to be used in association with the X.50 framing patterns. When the mode is selected the master BBM is set to 64k and the slave is (usually) set to 48k X.50. This allows the master BBM to become transparent to the X.50 framing structure, allowing it to be processed by the master DTE.

The mode is normally OFF, displayed as:

C > 64K Mode Off

Pressing SELECT gives:

5.7.6 Power Level

C > 64K Mode On

This items selects the output power level of the transmission circuitry. There are two options:

C > Power 10dBm

C > Power 0dBm

High power

Low power

Normally 10dBm is selected, the 0dBm option is intended for short lines, and to reduce interference to other equipment.

5.7.7 Menu Lock

This item is to enable the user to restrict access to menus once the BBM has been correctly configured.

The normal mode is displayed:

C > Menu Unlocked

When the menu is locked the display changes to:

C > Menu Locked

When locked, the SELECT key is disabled and no items in any menu can be altered. The only available option is to unlock the menu. To prevent accidental locking/unlocking, the SELECT key does not function normally for this feature. The lock is activated by selecting the STATUS MENU and then pressing three keys simultaneously.

These keys are (1) left menu key

(2)SELECT key

(3)TX NRDY key

The keys should be pressed in the order listed, in order to prevent activation of the TX NRDY feature.

When these keys are pressed the display will show:

>> Menu Locked

This message will be displayed for about 3 seconds before reverting back to the status display. The menu is now locked and if the configuration menu is examined it will display the locked message.

Pressing the same three keys again will unlock the menu:

>> Menu Unlocked

The operation is a toggle action (i.e. lock - unlock - lock), just like the normal SELECT key operation.

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Contents ATL Part No /203/002/610 Issue 4 September Base Band ModemInformation Contained This Document is Confidential to Contents Appendix B Introduction International ModelsConstructional Details Baseband ModemsInterface Modules System Overview System Overview Installation TestingBBM to BBM Link Self Test PassLTU Ready No Alarm LTU Not Ready Link ModeNetwork Mode BBM to Line Card LinkFront Panel Features Menu OperationLoop back Off Loop back OnStatus Menu Over all StatusLoop Active Alarm Status No Alarm No Signal Receiving AIS No AlignmentLOS/CD Fail CD FailUser Rate Line RateInterface Status Operating Mode Link Mode Network ModeTest Menu Local loopLocal loop from menu Top level display shows Loc Loop Off Loc Loop OnLoopback Local loop from DTELoopback is applied by selecting the display Loopback Off Loopback OnRemote Loop Remote Loop from menuRem Loop Off Rem Loop OnBinary Patterns Remote loop from DTEBin Keys Off Sending Bin Error Count Bit Error Rate BER = User Data Rate x Time Data TestOverview OperationErrors nnnnnn Errors s000001Errors Data TestInjection Mode Transparent ModeInjecting 0s Injecting 1sService Test Svc TestComms Evp Rx Evp Tx Time If the count is stopped the display is StopLamp Test Self TestCommunication Channel Loopback Comm Loop OffRate Menu Rate 4.8KMaster 64K BT Slave 4.8K Option Menu 2 X.21bisAsynchronous Mode Signalling Rate3 G.703 Character Length Char LenConfiguration Menu Master SlaveLine Rate 3 X.21 Loop Control ModemSynchronisation Type for software versions below Synchronisation Type for software version V1.3 and above Ext Byte ClkExt Bit Clk Internal Clk5 64k Mode Power LevelMenu Lock Glossary of Terms Band circuits General Specifications Way D type X.21 bis V.24 / V.28* Connector pin allocation Way D-type X.21 V.11 Connector pin allocationAppendix a Interface Pin Connections Mrac Connector Pin allocation Way D-type V.36 Connector pin allocationWay D-type RS-530 Connector pin allocation Line ConnectorAppendix B Internal Link Settings Page Interface Modules Interface ModuleRS530 Interface Module 21bis Interface ModuleService Test Facilities Frame StructureAppendix C In Service Test LVD Safety Statements TTE Network and Safety statementsAppendix E 21 bit timing cable 15 way to 15 way D type plugs21 byte timing cable 15 way to 15 way D type plugs 24 / V.28 bit timing cable 25 way to 25 way D type plugs35 bit timing cable 34 way to 34 way Mrac plugs 21 bis V.36 bit timing cable 37 way to 37 way D type plugs RS530 bit timing cable 25 way to 25 way D type plugsAppendix F Troubleshooting Slave Mode 64K Rate Power 10dBmMaster Mode C 64K Rate Rate 64K