American Telecom AM64/128A manual Loop back Off, Loop back On

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AM64/128A User Manual	Front Panel Operation

5.2 Front Panel Operation

The LCD will display one of five menus at any one time, these menus are:

1.	STATUS	(Prompt is S>)
2.	TEST	(Prompt is T>)
3.	RATE	(Prompt is R>)
4.	OPTION	(Prompt is O>)
5.	CONFIG	(Prompt is C>)

In normal circumstances, the front panel LCD will display a Status message relating to the overall state of the data link e.g. READY. Additional status information may be displayed by scrolling down through the menu. The Status menu is read - only. To select the next menu in the list the 'RIGHT MENU' button must be pressed. To go back to a previous menu the 'LEFT MENU' button must be pressed. A prompt on the left hand side of the display will indicate which menu has been selected. On entering a menu its title will be displayed in full before the display reverts to the first menu item and the relevant prompt. If left in the Status menu but not on the top line, the display will automatically time out and revert to the top line of the status menu after 5 mins.

The sequencing through the menus is as follows:

* STATUS MENU *

TEST MENU

RATE MENU

* OPTION MENU *

* CONFIG MENU *

When scrolling through a menu, items will appear in the order detailed in the individual menu descriptions. Each menu item display should indicate the current state of that item. For example if the loop back feature was currently inactive then the display should read:

T > Loop back Off

To change a menu setting press the 'SELECT’ button. The display will change to reflect the modified status.

T > Loop back On

If a menu item is not appropriate for a given situation, it will not appear in the menu. For example, it is not possible to have a loop back on and binary keys active at the same time. The first one selected will therefore prevent the other from appearing in the menu. Any item selected in the Rate, Option, or Configuration menus is automatically stored in non- volatile EEPROM memory. These features will thus be restored when the BBM is next powered up. Items in the Test Menu are not stored and are lost on power off.

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Contents Base Band Modem ATL Part No /203/002/610 Issue 4 SeptemberInformation Contained This Document is Confidential to Contents Appendix B International Models IntroductionBaseband Modems Constructional DetailsInterface Modules System Overview System Overview Testing InstallationBBM to BBM Link Self Test PassLink Mode LTU Ready No Alarm LTU Not ReadyBBM to Line Card Link Network ModeMenu Operation Front Panel FeaturesLoop back On Loop back OffOver all Status Status MenuLoop Active No Alarm No Signal Receiving AIS No Alignment Alarm StatusLOS/CD Fail CD FailLine Rate User RateInterface Status Link Mode Network Mode Operating ModeLocal loop Test MenuLocal loop from menu Top level display shows Loc Loop Off Loc Loop OnLocal loop from DTE LoopbackLoopback is applied by selecting the display Loopback Off Loopback OnRemote Loop from menu Remote LoopRem Loop Off Rem Loop OnRemote loop from DTE Binary PatternsBin Keys Off Sending Bin Data Test Error Count Bit Error Rate BER = User Data Rate x TimeOverview OperationErrors s000001 Errors nnnnnnErrors Data TestTransparent Mode Injection ModeInjecting 0s Injecting 1sSvc Test Service TestComms Evp Rx Evp Tx Time If the count is stopped the display is StopSelf Test Lamp TestComm Loop Off Communication Channel LoopbackRate 4.8K Rate MenuMaster 64K BT Slave 4.8K 2 X.21bis Option MenuSignalling Rate Asynchronous Mode3 G.703 Char Len Character LengthMaster Slave Configuration MenuLine Rate Modem 3 X.21 Loop ControlSynchronisation Type for software versions below Ext Byte Clk Synchronisation Type for software version V1.3 and aboveExt Bit Clk Internal ClkPower Level 5 64k ModeMenu Lock Glossary of Terms Band circuits General Specifications Way D-type X.21 V.11 Connector pin allocation Way D type X.21 bis V.24 / V.28* Connector pin allocationAppendix a Interface Pin Connections Way D-type V.36 Connector pin allocation Mrac Connector Pin allocationLine Connector Way D-type RS-530 Connector pin allocationAppendix B Internal Link Settings Page Interface Module Interface Modules21bis Interface Module RS530 Interface ModuleFrame Structure Service Test FacilitiesAppendix C In Service Test TTE Network and Safety statements LVD Safety Statements21 bit timing cable 15 way to 15 way D type plugs Appendix E24 / V.28 bit timing cable 25 way to 25 way D type plugs 21 byte timing cable 15 way to 15 way D type plugs35 bit timing cable 34 way to 34 way Mrac plugs RS530 bit timing cable 25 way to 25 way D type plugs 21 bis V.36 bit timing cable 37 way to 37 way D type plugsAppendix F Troubleshooting Power 10dBm Slave Mode 64K RateMaster Mode C 64K Rate Rate 64K