American Telecom AM64/128A manual General Specifications

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AM64/128A User Manual	Specifications

GENERAL SPECIFICATIONS

Transmission system uses DSP techniques involving echo cancellation and adaptive decision feedback equalisation. The system is intended for use on 2-wire unconditioned copper wire (BT EPS-9 type circuits).

Power output selectable 0dBm or 10dBm.

Line code is AMI with embedded synch pattern for timing control. Line rates 71.1kbit/s (high) or 142.2kbit/s (double).

Line attenuation range up to 50dB at 10dBm output level and high line rate. This is equivalent to a noise free range of 5km on 0.4mm diameter copper wire.

Line attenuation range up to 40dB at 10dBm output level and double line rate. This is equivalent to a noise free range of 4km on 0.4mm diameter copper wire.

High line rate user data rates: 2400, 4800, 9600, 16000, 19200, 32000, 48000, 56000, 64000 bit/s.

Double line rate user data rates: 128000 bit/s.

Synchronous working at all user rates, asynchronous working at 2400,4800,9600 and 19200 bit/s.

Byte timing is available at 64kbit/s with the X.21 interface.

X50 divisions 2 and 3 are supported at 48kbit/s.

User interfaces:	X.21 V.11
	X.21 bis V.24 / V.28
	X.21 bis V.35
	X.21 bis V.36
	X.21 bis RS-530
	G.703 (120ž, 64kbps) Codirectional.
Test facilities:	local loop, loopback, remote loop, comms channel loop,
	transmit binary 0, transmit binary 1, transmit CNR,
	self test, lamp test, data channel error test, in service error test.
Enviromental:	Temperature range	-10 to + 60 deg C
	Humidity range	5 % to 85 %
	Air pressure range	70 to 106 kPa
Power supply:	The unit has a user accessible changeover switch for operation at either:
	240V ac +6% to -10%, 50/60Hz or 110V ac +6% to -10%, 50/60Hz.
Supply requirements:	5W Max
Dimensions:	274mm(L) x 251mm(W) x 55mm(H)
Weight:	2.45kg (excluding leads)

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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 IntroductionConstructional Details Baseband ModemsInterface Modules System Overview System Overview Self Test Pass InstallationTesting BBM to BBM LinkLink Mode LTU Ready No Alarm LTU Not ReadyBBM to Line Card Link Network ModeMenu Operation Front Panel FeaturesLoop back On Loop back OffStatus Menu Over all StatusLoop Active CD Fail Alarm StatusNo Alarm No Signal Receiving AIS No Alignment LOS/CD FailUser Rate Line RateInterface Status Link Mode Network Mode Operating ModeLoc Loop On Test MenuLocal loop Local loop from menu Top level display shows Loc Loop OffLoopback On LoopbackLocal loop from DTE Loopback is applied by selecting the display Loopback OffRem Loop On Remote LoopRemote Loop from menu Rem Loop OffBinary Patterns Remote loop from DTEBin Keys Off Sending Bin Operation Error Count Bit Error Rate BER = User Data Rate x TimeData Test OverviewData Test Errors nnnnnnErrors s000001 ErrorsInjecting 1s Injection ModeTransparent Mode Injecting 0sTime If the count is stopped the display is Stop Service TestSvc Test Comms Evp Rx Evp TxSelf Test Lamp TestComm Loop Off Communication Channel LoopbackRate 4.8K Rate MenuMaster 64K BT Slave 4.8K 2 X.21bis Option MenuAsynchronous Mode Signalling Rate3 G.703 Char Len Character LengthConfiguration Menu Master SlaveLine Rate 3 X.21 Loop Control ModemSynchronisation Type for software versions below Internal Clk Synchronisation Type for software version V1.3 and aboveExt Byte Clk Ext Bit 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 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 E21 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 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 Rate 64K Slave Mode 64K RatePower 10dBm Master Mode C 64K Rate