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61200062L1-1

DSU 56/64 User Manual

B-1

Appendix B

Specifications

SPECIFICATIONS AND FEATURES

The DSU 56/64 is a single stand-alone unit designed to be used
either on a desktop or mounted on a wall.

This section describes the standard specifications and features
incorporated in the DSU 56/64.

Loop Interface

•

4-wire, full duplex

Line Requirements

•

Local loop specifications per AT&T Pub 62310

Loop Rates

•

56 kbps or 64 kbps

Receiver Sensitivity

•

-45 dB

DTE Interfaces

•

V.35 synchronous

DTE Operating Modes

•

Full or half duplex

DTE Data Rates

•

56 kbps or 64 kbps synchronous

Summary of Contents for DSU 56/64

Page 1: ...DSU 56 64 Data Service Unit User Manual Part Number 1200062L1 61200062L1 1E May 2001...

Page 3: ...less type during an electrical storm There is a remote risk of shock from lightning 3 Do not use the telephone to report a gas leak in the vicinity of the leak 4 Use only the power cord power supply a...

Page 4: ...transmitted on the network The affidavit shall affirm that either no encoded analog content or billing informa tion is being transmitted or that the output of the device meets Part 68 encoded analog c...

Page 5: ...ion information continuously complies with Part 68 of the FCC rules and Regulations The digital CPE does not transmit digital signals containing encoded analog con tent or billing information which is...

Page 6: ...___________ telco s name with proper documentation to demonstrate compliance with the information in the preceding paragraph if so requested _____________________ Signature _____________________ Title...

Page 7: ...ification is given otherwise notification is given as soon as possible The telephone company will advise the customer of the right to file a complaint with the FCC 5 The telephone company may make cha...

Page 8: ...n which case the user will be required to correct the interference at his own expense Shielded cables must be used with this unit to ensure compliance with Class A FCC limits Canadian Emissions Requir...

Page 9: ...ns Repairs to certified equipment should be made by an authorized Canadian mainte nance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment m...

Page 10: ...ty becomes null and void if Customer modifies or alters the equipment in any way other than as specifically authorized by ADTRAN EXCEPT FOR THE LIMITED WARRANTY DESCRIBED ABOVE THE FOREGOING CONSTITUT...

Page 11: ...distributor first If your local distributor cannot help please contact ADTRAN Technical Support and have the unit serial number available The Custom Extended Services ACES program offers multiple type...

Page 12: ...most popular products These courses include overviews on product features and func tions while covering applications of ADTRAN s product lines ADTRAN provides a va riety of training options including...

Page 13: ...twork Status Red 1 2 Test Status Error Yellow Red 1 3 Test Switches 1 3 Rear Panel 1 4 Chapter 2 Installation Unpack Inspect Power Up 2 1 Contents of Shipping Package 2 1 Customer Provides 2 1 Power U...

Page 14: ...7 2 4 Down 56 Kbps 2 4 Up 64 kbps 2 4 Scrambler SW 8 2 4 Down On 2 4 Up Off 2 4 Network Connections 2 5 DTE Connections 2 5 Chapter 3 Test Modes Self Test 3 1 Near End Tests 3 2 DTE Only Test 3 2 DTE...

Page 15: ...List of Figures Figure 1 1 DSU 56 64 Unit 1 2 Figure 1 2 DSU 56 64 Rear Panel 1 4 Figure 3 1 DTE Only Test Diagram 3 2 Figure 3 2 DTE with TP Test Diagram 3 4 Figure 3 3 DTE and LoopTest Diagram 3 5...

Page 16: ...List of Figures xvi DSU 56 64 User Manual 61200062L1 1...

Page 17: ...61200062L1 1 DSU 56 64 User Manual xvii List of Tables Table 2 1 Default Option Switch Settings 2 5 Table A 1 Pinouts for RJ 48S Network Connections A 1 Table A 2 V 35 DTE Pinouts A 2...

Page 18: ...List of Tables xviii DSU 56 64 User Manual 61200062L1 1...

Page 19: ...the interface between telco provided Digital Data Service DDS and the customer s Data Terminal Equipment DTE The DSU 56 64 supports both 56 kbps and 64 kbps loop service rates with the DTE interface...

Page 20: ...t LED Identification DTE Status Green Network Status Red SELECT ERROR PTRN RDL TEST LOOP DTE TEST DSU 56 64 CD RD TD CS RS ALM Indicator Definition Source RS CS TD RD CD Request To Send Clear To Send...

Page 21: ...oop interface test CSU or DSU Loopback has been initiated by telco RDL ON SOLID indicates remote digital loopback test has been initiated from the local DSU FLASHING indicates remote digital loopback...

Page 22: ...ts on page A 2 Figure 1 2 DSU 56 64 Rear Panel All setup or configuration parameters for the DSU 56 64 are selected with an eight position DIP switch This switch labeled OPTIONS is accessible from the...

Page 23: ...ADTRAN Customer and Product Service CAPS If possible keep the original shipping container for use in returning the unit for repair or for verification of damage during shipment Contents of Shipping P...

Page 24: ...is accessible from the rear panel A chart showing the options and switch settings is attached to the bottom of the unit Clear To Send CS SW 1 Down Normal In the down position CS follows the RS lead wi...

Page 25: ...ated every second while RS is active When the antistream time out expires the DSU 56 64 stops transmitting DTE data into the network It does however continue to accept data CS is maintained in the act...

Page 26: ...s Up 64 kbps The network interface is configured for 64 kbps operation Scrambler SW 8 For 64 kbps clear channel operation there is a possibility that the DTE data sequenced might mimic network loop ma...

Page 27: ...TIONS The Data Terminal Equipment DTE is attached to the connector labeled PRIMARY V 35 at the rear of the DSU 56 64 The pinout for the V 35 DTE connector is shown in Table A 2 on page A 2 Table 2 1 D...

Page 28: ...Chapter 2 Installation 2 6 DSU 56 64 User Manual 61200062L1 1...

Page 29: ...the front panel turn on simultaneously for approximately two seconds 2 After two seconds all the LEDs turn off briefly 3 The LEDs then cycle on in pairs with a fan out pattern away from the ALM indic...

Page 30: ...EST The DTE ONLY test can test both the DTE interface of the local DSU 56 64 plus its loop transmitter and receiver For this test the loop transmit data is connected to the loop receive data at a poin...

Page 31: ...coded and returned to the terminal or test equipment where it is checked for any bit errors DTE WITH TEST PATTERN TP The DTE WITH TP test is similar to the DTE ONLY TEST described in Figure 3 1 on pag...

Page 32: ...o the transmit data stream by pressing SELECT and observed by watching the ERROR LED turn on for a brief period of time As previously mentioned the DTE WITH TP is automatically performed during the se...

Page 33: ...Figure 3 3 illustrates the loopback points and the signal paths for this test The DTE AND LOOP LEDs flash during initialization of the test and turn on solid once the test is in progress Figure 3 3 DT...

Page 34: ...interface is ignored for this test The LOOP LED flashes during initialization of the test and turns on solid once the test is in progress Figure 3 4 illustrates the loopback point and the signal path...

Page 35: ...indicator 2 Press TEST while this test indicator is on 3 To terminate this test press TEST RDL with Test Pattern TP When the RDL WITH TP test is initiated at the local DSU 56 64 the local DSU command...

Page 36: ...synchronization is achieved the ERROR indicator is turned off The ERROR indicator turns on when errors in the receive data pattern are detected While this test is active errors can be injected into th...

Page 37: ...the end to end performance of the circuit Both the CSU LOOPBACK and the DSU LOOPBACK tests are activated from the telephone company diagnostic test equipment and are used to isolate trouble on a circu...

Page 38: ...Chapter 3 Test Modes 3 10 DSU 56 64 User Manual 61200062L1 1...

Page 39: ...Network Connections Pin Number Function Signal Direction 1 Transmit Data R From Customer to Network Interface 2 Transmit Data T From Customer to Network Interface 3 6 Not Used N A 7 Receive Data T 1 F...

Page 40: ...SR F 109 Receive Line Signal Detector CD R 104 Received Data RD A T 104 Received Data RD B V 115 Receiver Signal element Timing SCR A X 115 Receiver Signal Element Timing SCR B P 103 Transmitted Data...

Page 41: ...unted on a wall This section describes the standard specifications and features incorporated in the DSU 56 64 Loop Interface 4 wire full duplex Line Requirements Local loop specifications perAT T Pub...

Page 42: ...f test Local loopback V 54 activated remote loopback with 2047 test pattern DTE data data from external test set Power 115 VAC 4 Watts maximum Environment Operating Temperature 0o C to 50o C 32o F to...

Page 43: ...t 3 4 DTE connections 2 5 DTE status LED identification 1 2 DTE with TP test 3 3 DTE only test 3 2 E environmental specifications B 2 F Far End Tests 3 7 FCC radio frequency interference viii FCC regu...

Page 44: ...ing damage what to do 2 1 shipping package contents of 2 1 specifications B 1 T technical support how to contact xi test modes 3 1 DTE and Loop Test 3 4 DTE with Test pattern test 3 3 DTE only test 3...

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