American Telecom AM64/128A manual Rate Menu, Rate 4.8K

Page 28

Menu Operation - Rate Menu

AM64/128A User Manual

 

 

5.5Rate Menu

The rate menu is only accessible in master mode. In slave mode the user rate is dictated by the master BBM. The rate can then only be viewed in the status menu. This menu consists of a number of data rates from which one can be selected, except for 128k line rate, where 128k data rate is automatically selected. The actual rates available depend on the modem interface type. On entering the rate menu the initial display is that of the current rate. The display shows the word ‘Rate’ next to the prompt to indicate this. All other available rates are indicated by the number alone. To view the selection of rates use the SCROLL keys. The rates increase scrolling down through the list.

For example:

If the rate 4.8k is currently selected then the display is

R > Rate - 4.8K

Scrolling down one position gives the display

R > 9.6K

 

 

To change rates, locate the required rate and press SELECT. The display should change to indicate that the new rate has been selected. The full list of available rates follows (all shown as though selected);

R > Rate - 2.4K

 

 

 

 

 

R > Rate - 4.8K

 

 

 

 

 

R > Rate - 9.6K

 

 

 

 

 

R > Rate - 16K

Unstructured rate (i.e. no status line).

 

 

 

 

R > Rate - 19.2K

 

 

 

 

 

R > Rate - 32K

Unstructured rate.

 

 

 

 

R > Rate - 48K 10

Normal 48k mode.

 

 

 

 

R > Rate - 48K d2

X.21 only, X.22/X.50 division 2 with frame pulse.

 

 

 

 

R > Rate - 48K d3

X.21 only, X.22/X.50 division 3 with frame pulse.

 

 

 

 

R > Rate - 56K

 

 

 

 

 

R > Rate - 64K

Unstructured rate.

 

 

 

 

R > Rate - 64K BT

X.21 only, unstructured rate with byte timing pulse.

 

 

 

 

R > Rate - 128K

Automatically selected for 128k Line Rate.

 

 

28

Image 28
Contents ATL Part No /203/002/610 Issue 4 September Base Band ModemInformation Contained This Document is Confidential to Contents Appendix B Introduction International ModelsBaseband Modems Constructional DetailsInterface 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 OnOver all Status Status MenuLoop Active Alarm Status No Alarm No Signal Receiving AIS No AlignmentLOS/CD Fail CD FailLine Rate User 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 OnRemote loop from DTE Binary PatternsBin 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.21bisSignalling Rate Asynchronous Mode3 G.703 Character Length Char LenMaster Slave Configuration MenuLine Rate Modem 3 X.21 Loop ControlSynchronisation Type for software versions below Synchronisation Type for software version V1.3 and above Ext Byte ClkExt 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 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 plugs24 / 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 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