DSU 5600 User Manual
Contents
1. Test Status Error Yellow Red Select and Test Rear Panel a er Chapter 2 Installation sen nn neuen Customer Warranty and Customer Service i E Powering eusnesussenesenensennessnanknsun ensnunnuoshuunnenenusanunn nen en DTE Rate and Scrambler SW 1 SW 2 SW 3 Loop SW A nn ann Ruine dan Clear To Send CS SW Carrier Detect CD SW S 10 Data Set Ready SR kasa 10 Remote Digital Loopback RIL WE a 10 Network Connections ssvesicntsseiescussesvseveseeesaaesesteseenendsxseyencutcransebeusseinsevecantatinsteseesesteees 11 DIE Connecti Ons Rh den 12 Chapter 3 Test Modes Gab Los pe re 13 Near End Test eed sis an anata 14 DIE Scat cae ide 14 DTE With Test Pattern TP y ra u tases 16 DTE and Loop TIL 18 Loop Only Test ier eah Ret near 20 565 21 Remote Digital Loopback RDL Ian een 21 61200 078L1 1 DSU 5600 User Manual Table of Contents RDL With Test Pattern CIR2. aan 21 Test Pattern PTR a 22 Remote TestfSuqu gamu uqanma ama 23 Chapter 4 Specifications Summary Features 25 saan aysana aasma 25 Line Requirements 25 25 Receiver Sensitivity nee pissen 25 DTE Interfaces 25 DIE Data Rates een ame 25 DIE Operating Modes riese eein EE RE RS RE E a TEREE 25 Diagnose isise een E 26 OW erosa iba ias aasan E 26 Environment 26 Index R E E 27 List of Tables Table 2 A Switch Settings for DTE Asyne Rate u a 9 Table 2 B Network sser eresie e a aei iiaeia 11 Table 2 Pin Assignments for Primary EIA 232 Connector 12 List of Figures Figure 1 1 DSU 5600 Front Paneles aap sen usa 4 Figure 1 2 DSU 5600 Rear Panel 5 Fig re 1 DTE Only lest ns 15 Figure 3 2 DTE with Test Pattern Test Diasram u 17 Figure 3 3 and Loop Test Diagram nennen 19 Figure 3 4 Loop Only Test 20 ii DSU 5600 User Manual 61200 07811 1 Chapter 1 Introduction GENERAL DESCRIPTION 61200 078L1 1 The ADTRAN DSU 5600 is a technologically advanced high performance D
3. When the RDL with TP test is initiated at the local DSU 5600 it commands the remote DSU into loopback with the industry standard V 54 loopback pattern The loopback point and the signal paths for the remote DSU are the same as the Loop Only test for a local DSU Figure 3 4 This loopback test is performed with data from the internal test pattern generator and error detector To initiate the RDL with TP test perform the following steps 1 Press Select six times to turn On both the RDL and PTRN test indicators 2 Press Test while these test indicators are On The RDL and PTRN LEDs Flash during initialization of the test and turn On solid once the test is in progress To terminate this test press Test DSU 5600 User Manual 21 Chapter 3 Test Modes Test Pattern PTRN 22 When the PTRN test is initiated the local DSU 5600 uses the integral test pattern generator to transmit a standard 2047 test pattern to the DSU On the far end of the circuit The local 250 5600 then examines the received data for the standard 2047 pattern Once this pattern is detected 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 the transmit data stream by pressing the Select push button initiate the PTRN test use the following steps 1 Press the Select switch seven times to turn On the PTRN test indicator 2 Press the
4. 15 DTE Status 2 DTE with Test Pattern 13 Diagram 17 Environment 26 Error Indicator 3 13 16 Inject 16 F Far End Test 21 Indicator ALM 2 13 CD 2 10 CS 2 9 DTE 2 13 16 Error 3 16 LED 8 Loop Test 3 PTRN 3 21 22 PTRN test 16 RD 2 RDL 3 10 DSU 5600 User Manual 27 Index Remote Digital Loopback 21 RS 2 13 SR 10 TD 2 Inject Error 16 L LED Indicator 8 Test Pattern 13 Line Requirements 25 Loop Interface 25 Loop Interface Test 3 Loop Only Test 20 Loop Rate 25 Network Status Indicator 2 Options 4 P Parameters 4 Pattern 2047 16 Generator 3 Power 8 26 Cord 5 8 Primary EIA232 12 Prom Checksum Failure 13 PTRN Test Indicator 3 13 16 21 22 R RD Indicator 2 RDL Indicator 3 10 21 Rear Panel 4 Receive Data 2 28 DSU 5600 User Manual Receiver Sensitivity 25 Remote Digital Loopback Test 3 Request To Send 2 RS Indicator 2 13 5 Select Switch 22 Self Test 8 SR Indicator 10 Options 4 Select 22 Test 3 21 T TD Indicator 2 Test DTE Interface 2 Far 21 Loop Interface 3 Loop Only 20 Pattern Detector 16 Pattern Generator 16 Remote Digital Loopback 3 Self 8 Status 2 Switch 3 21 22 Transmit Data 2 61200 078L1 1 Product Support Information Presales Inquiries and Applications Support Please contact your local distributor ADTRAN Applications Engineering or ADTRAN Sales Applications Engineering 800 615 1176 Sales 800 827 0807
5. Test switch while this test indicator is On The LED Flashes during initialization of the test and turns On solid once the test is in progress To terminate this test press the Test switch DSU 5600 User Manual 61200 078L1 1 REMOTE TESTS 61200 078L1 1 Chapter 3 Test Modes The DSU 5600 responds to three remote activated tests e Remote Digital Loopback RDL CSU Loopback LL DSU Loopback The RDL test is initiated by a remote DSU and causes the local DSU 5600 to loopback The loopback point is the same as the Loop Only point shown in Figure 3 4 This test is run to test the end to end performance of the circuit Both the CSU Loopback and the DSU Loopback tests are acti vated from the telephone company diagnostic test equipment and are used to isolate trouble on a circuit The CSU Loopback commonly called the LL test has the same loopback points as the DTE and Loop test It is used by the telephone company to test the integrity of the local loop The DSU Loopback commonly called the RT test has the same loopback point as the Loop Only test and is used by the tele phone company to test the operation of both the local loop and DTE interface sections DSU 5600 User Manual 23 Chapter 3 Test Modes 24 DSU 5600 User Manual 61200 078L1 1 Chapter 4 Specifications Summary SPECIFICATIONS AND FEATURES 61200 078L1 1 This section describes the standard specifications and features incorp
6. rear of the DSU 5600 The pin assignments for all pins used on this connector are shown in Table 2 C Table 2 C Pin Assignments for Primary ELA 232 Connector Signal Direction Receive Data RD Signal Ground SG Transmit Clock 5 0 BEE GE BC aa __ I S A shielded ETA 232 cable is required to prevent possible radio fre quency interference emissions DSU 5600 User Manual 61200 078L1 1 Chapter 3 Test Modes SELF TEST 61200 078L1 1 In addition to a self test mode other DSU 5600 test modes allow the user to isolate problems to specific components of the communications circuit These various test modes for the DSU 5600 are initiated and terminated from the front panel using Select and Test When the DSU 5600 is powered on all LEDs on the front panel turn On simultaneously for approximately two seconds then turn Off briefly The LEDs then cycle On in pairs with a fan out pattern away from the ALM indicator Next the LEDs cycle Off in pairs with a fan in pattern back towards the ALM indicator These patterns are repeated four times to determine that all LEDs are functioning properly At completion of the LED test patterns the PTRN LED is On indicating the DTE with TP test is being performed This test is successful if the Error indicator does not turn On If the DTE with TP test fails the RS ALM DTE PTRN and Error indica tors all Flash If an EPROM CHECKSUM failure is detected during sel
7. time Data Set Ready SR SW 7 When this switch is in the down On position Data Set Ready SR is forced On all the time For the up normal position SR is turned Off when the network is out of service or a test is in progress Remote Digital Loopback RDL SW 8 When this switch is in the down enable position the DSU 5600 accepts the industry standard V 54 Remote Digital Loopback RDL command from the far end of the circuit When this switch is in the up disable position the DSU 5600 does not respond to a V 54 loopback command from the far end of the circuit 10 DSU 5600 User Manual 61200 078L1 1 Chapter 2 Installation NETWORK CONNECTIONS 61200 078L1 1 This interface consists of four leads paired to provide separate transmit and receive circuits The four leads are provided on the eight position modular jack RJ 48S labeled TELCO on the rear panel of the DSU 5600 The pin assignments for this connector are shown in Table 2 B Table 2 B Network Connections 1 Transmit Data R Customer to Network Interface 2 Data T From Customer to Network Interface N ot Used Receive Data T 1 From Network Interface to Customer Receive Data R 1 N etwork Interface to Customer DSU 5600 User Manual 11 Chapter 2 Installation DTE CONNECTIONS yi CAUTION 12 The Data Terminal Equipment is attached to the connector labeled PRIMARY EIA 232 at the
8. ADRAN DSU 5600 Data Service Unit USER MANUAL 61200 078L1 1D May 1997 ADRAN 901 Explorer Boulevard P O Box 140000 Huntsville AL 35814 4000 Phone 205 963 8000 1997 ADTRAN Inc All rights reserved Printed in USA FCC regulations require that the following information provided in this manual 1 This equipment complies with Part 68 of the FCC rules the bottom of the equipment housing is a label that shows the FCC registration number and Ringer Equivalence Number REN for this equipment If requested provide this information to the telephone company If this equipment causes harm to the telephone network the telephone company may temporarily discontinue service If possible advance notification 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 The telephone company may make changes in its facilities equipment operations or procedures that could affect the proper operation of this equipment advance notification and the opportunity to maintain uninterrupted service is given If experiencing difficulty with this equipment please contact ADTRAN for repair and warranty information The telephone company may require this equipment to be disconnected from the network until the problem is corrected or it is certain the equipment is not malfunctioning This unit contains no user serv
9. Manual 61200 078L1 1 Chapter 2 Installation Table 2 A Switch Settings for DTE Rate ___ swi 5 Scrambler Enabled up up up Loop Rate SW 4 When SW4 switch is in the down 56 kbps position the network interface of the DSU 5600 is configured for operation at 56 kbps and when this switch is in the up 64 kbps position the network interface is configured for 64 kbps operation For 64 kbps clear channel operation there is a possibility that the DTE data sequences might mimic network loop maintenance functions and erroneously cause other network elements to activate loopbacks To prevent this a data scrambler is enabled when the 64 kbps option is selected Clear To Send CS SW 5 61200 078L1 1 When this switch is in the down normal position Clear To Send CS follows the Request To Send RS lead with 250 u 125 u of delay The only exceptions to this occur when network or test conditions prevent data from being transferred over the DTE interface During these conditions CS is turned Off For the up On position CS is forced On all the time DSU 5600 User Manual 9 Chapter 2 Installation Carrier Detect CD SW 6 When this switch is in the down normal position Carrier Detect CD is On any time customer data is being received and Off when the receive circuit is idle not carrying customer data When this switch is in the up On position CD is forced On all the
10. POWERING NOTE For information regarding warranty and customer service see the inside cover of this manual The DSU 5600 is equipped with a captive six foot power cord that is terminated with a three prong plug for connecting to a grounded power receptacle that a grounded 115 VAC 60 Hz receptacle is used for power ing the DSLI 5600 When the DSU 5600 is plugged into an AC power source it performs a SELF TEST that tests all LED indicators plus various circuit blocks within the unit Proper operation plus failures are indicated via the LED indicators CONFIGURATION The DSU 5600 has eight options for controlling the operation of both the network and DTE interfaces These options are selected by setting individual switches on the eight position DIP switch that is accessible from the rear panel A label of the switch settings and their respective options is attached to the bottom of the unit for convenience DTE Rate and Scrambler SW 1 SW 2 SW 3 NOTE These three switches select the data rate for the DTE interface and enable or disable the scrambler As shown in Table 2 A combinations of up and down settings for these switches select specific data rates and enable or disable the scrambler When operating at 64 kbps synchronously in Frame Relay networks the scrambler must be disabled When operating synchronously on a 64 kbps DDS loop not supporting Frame Relay the scrambler should be enabled DSU 5600 User
11. Post Sale Support Please contact your local distributor first If your local distribu tor cannot help please contact ADTRAN Technical Support and have the unit serial number available Technical Support 888 4ADTRAN Repair and Return If ADTRAN Technical Support determines that a repair is needed Technical Support will coordinate with the Return Material Authorization RMA department to issue an RMA number For information regarding equipment currently in house or possible fees associated with repair contact RMA directly at the following number RMA Department 205 963 8722 Identify the RMA number clearly on the package below ad dress and return to the following address ADTRAN Inc RMA Department 901 Explorer Boulevard Huntsville Alabama 35806 RMA
12. RANSMIT INTERFACE DTE RECEIVE DTE ONLY INTERFACE DSU 5600 User Manual NETWORK INTERFACE LOOP TRANSMIT INTERFACE Shy LOOP TX LOOP INTERFACE Figure 3 1 DTE Test Diagram 15 Chapter 3 Test Modes DTE with Test Pattern TP The DTE with Test Pattern TP test is similar to the DTE Only test described previously The DTE with TP test is initiated at the local DSU 5600 and is used to independently test the opera tion of the DSU 5600 initiate the with TP test perform the following steps 1 Press Select twice to turn On both the DTE and PTRN test indicators 2 Press Test while these test indicators are On terminate this test press Test Instead of using data from the terminal or test equipment this test utilizes an internal test pattern generator and detector built into the DSU 5600 The loopback point and the data paths for this test are illustrated in Figure 3 2 The internal test pattern generator and detector of the DSU 5600 operate with a 2047 data pattern When this test is initiated the test pattern detector examines the receive data stream until synchronization to the 2047 pattern is achieved Once synchro nized the detector continues to check the receive data and reports any bit errors detected by turning On the Error LED Once a test is initialized with the internal test pattern generator and detector
13. ata Service Channel Service Unit DSU CSU that provides the interface between telco provided Digital Data Service DDS and the customer s Data Terminal Equipment DTE The DSU 5600 supports both 56 kbps and 64 kbps loop service rates and provides either synchronous or asynchronous modes of operation for the DTE interface When the DTE interface is configured for synchronous operation the DSU 5600 matches the selected loop rate When the DTE interface is configured for asynchronous operation it supports asynchronous data commu nications over either a 56 kbps or 64 kbps DDS service In asynchronous mode the DTE can be configured to operate at any of the standard asynchronous communication rates from 1 2 kbps to 57 6 kbps All setup or configuration is accomplished with a single eight position DIP switch that is accessible from the back panel of the unit The DSU 5600 has an industry standard EIA 232 interface provided on a 25 pin connector DSU 5600 User Manual 1 Chapter 1 Introduction PHYSICAL DESCRIPTION Front Panel The DSU 5600 is a stand alone unit designed to be used either on a desktop or mounted on a wall The physical measurements of the DSU 5600 are Length 8 32 inches Width 6 50 inches Height 1 56 inches Weight 1 50 pounds As shown in Figure 1 1 the front panel of the DSU 5600 contains eleven LED indicators that display DTE interface network and test status These indicators are defined in the fo
14. errors can be injected into 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 test is automatically performed during the self test sequence for the DSU 5600 16 DSU 5600 User Manual 61200 07811 1 TEST EQUIPMENT INTERFACE TD RD 61200 078L1 1 Chapter 3 Test Modes DTE TRANSMIT INTERFACE DTE RECEIVE INTERFACE TEST PATTERN GENERATOR NETWORK INTERFACE LOOP TRANSMIT INTERFACE LOOP TX DTE WITH TEST PATTERN V TEST PATTERN DETECTOR LOOP RX RECEIVE INTERFACE DSU 5600 User Manual Figure 3 2 DTE with Test Pattern Test Diagram 17 Chapter 3 Test Modes DTE and Loop Test LL The DTE and Loop test is initiated at the local DSU 5600 and allows independent testing of the separate sections of the DSU 5600 First it allows the local DTE interface to be tested with data from the terminal or test equipment Second it allows the loop interface section of the local DSU 5600 to be tested from the remote site over the actual communications circuit Testing from the remote end of the circuit is done with test data generated by the remote DSU or terminal type test equipment The DTE and Loop test splits the DSU 5600 into separate DTE and Loop interface sections and then loops the transmit data
15. f test CS ALM PTRN and Error indicators Flash at the end of the self test DSU 5600 User Manual 13 Chapter 3 TestMode NEAR END TEST DTE Only Test 14 5 The local 050 5600 is capable of performing following near end tests DTE Only e DTE with Test Pattern e DTE and Loop LL Loop Only RT The DTE Only test provides a method for testing both the DTE interface of the local DSU 5600 plus its loop transmitter and receiver For this test the loop transmit data is connected to the loop receive data at a point close to the physical network inter face A block diagram illustrating the loopback point and the signal paths for this test is shown in Figure 3 1 To initiate the DTE Only test perform the following steps 1 Press Select once to turn On the DTE test indicator 2 Press Test while the test indicator is On To terminate this test press Test Test data from the terminal or test equipment is routed through the DTE section of the DSU 5600 and then to the output of the loop transmitter section where the signal is encoded for trans mission The output of the loop transmitter is coupled back to the loop receiver input This receive test signal is then decoded and returned to the terminal or test equipment where it is checked for bit errors DSU 5600 User Manual 61200 078L1 1 OR TEST EQUIPMENT INTERFACE a RD lt __ 61200 078L1 1 Chapter 3 Test Modes DTE T
16. he rear panel This switch is labeled OPTIONS and reference is made to the options chart on the bottom of the unit The indi vidual options are explained in detail in the section Powering A power cord is also shown on the rear panel of the DSU 5600 The captive power cord on the back panel provides connection to the AC DC power supply DSU 5600 User Manual 61200 078L1 1 Chapter 1 Introduction TELCO OPTIONS LISTED ON BOTTOM Figure 1 2 DSU 5600 Rear Panel 61200 078L1 1 DSU 5600 User Manual 5 Chapter 1 Introduction 6 DSU 5600 User Manual 61200 078L1 1 Chapter 2 Installation UNPACKING After unpacking the DSU 5600 carefully inspect it for shipping damages If damage is suspected file a claim immediately with the carrier and then contact ADTRAN Technical Support If possible keep the original shipping container for use in return ing the unit to ADTRAN for repair or verification of shipping damage ADTRAN Shipments Include The following items are included in ADTRAN shipments of the DSU 5600 The DSU 5600 unit e Network interface cable an 8 position modular to 8 position modular The user manual Customer Provides The customer must provide an EIA 232 interface cable with standard 25 pin male D type connectors Cannon or Cinch DB 19604 432 61200 078L1 1 DSU 5600 User Manual 7 Chapter2 Installation WARRANTY AND CUSTOMER SERVICE
17. iceable parts An FCC compliant telephone cord with a modular plug is provided with this equipment In addition an FCC compliant cable appropriate for the dial backup option ordered is provided with this equipment This equipment is designed to be connected to the telephone network or premises wiring using an FCC compatible modular jack which is Part 68 compliant The following information may be required when applying to the local telephone company for leased line facilities Service Digital Facility Service Order Network Type Interface Code Code Jacks 56 kbps Digital Interface 04DU5 56 6 0F 485 FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device Pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercialenvironment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio frequencies Operation of this equipment residential area is likely to cause harmful interference in 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 Change or modifica
18. llowing section LED Identification LED Identification NOTE DTE Status Green INDICATOR DEAINMON SOURCE RS Request To Send DTE 5 Clear Send DSU TD Transmit Data DTE RD Receive Data DSU CD Carrier Detect DSU The state for the status indicators RS CS and CD is On the On state for the data indicators TD and RD represents a SPACE condition Network Status Red ALM On indicates a problem on the local loop or within the DDS network Off indicates a normal loop and network conditions DSU 5600 User Manual 61200 078L1 1 Select and Test Buttons 61200 078L1 1 Chapter 1 Introduction Test Status Error Yellow Red DTE Loop RDL PTRN Error On indicates DTE interface test in progress Flashing indicates loop interface test CSU Loopback has been initiated by the telco On solid indicates loop interface test has been initiated from local DSU Flashing indicates loop interface test CSU or DSU Loopback has been initiated by the telco On solid indicates remote digital loopback test has been initiated from the local DSU Flashing indicates remote digital loopback test has been initiated from the remote DSU On indicates integral pattern generator is being utilized for testing On solid indicates remote digital loopback test has been initiated from the local DSU Flashing indicates remote digital loopback test has been initiated from the remote DSU For more information
19. mpliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecom munications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connec tions of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Caution Users should not attempt to make such connections themselves but should contact the appropriate electric inspection authority or an electrician as appropriate The Load Number LN assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device to prevent overloading The termination on a loop may consist of any combina tion of devices subject only to the requirement that the total of the Load Num bers of all devices does not exceed 100 Table of Contents Chapter 1 Introduction General Description anne ae Physical DOsepiplton a u u a Front u S SSS SQ m aS unu a LED Identification een ne DTE Status Green uuesistaeintar aan aan Network Status
20. of each interface back to its respective receive data A block dia gram illustrating the loopback points and the signal paths for this test is shown in Figure 3 3 To initiate the DTE and Loop test perform the following steps 1 Press Select three times to turn On both the DTE and Loop test indicators 2 Press Test while these test indicators are On The DTE and Loop LEDs Flash during initialization of the test and turn On solid once the test is in progress To terminate this test press Test 18 DSU 5600 User Manual 61200 078L1 1 OR TEST EQUIPMENTI INTERFACE T gt Rp lt Chapter 3 Test M odes DTE TRANSMIT INTERFACE DTE RECEIVE INTERFACE 61200 078L1 1 DSU 5600 User Manual NETWORK INTERFACE LOOP TRANSMIT INTERFACE LOOP TX ead LOOP RX RECEIVE INTERFACE Figure 3 3 DTE and Loop Test Diagram 19 Chapter 3 Test Modes Loop Only Test The Loop Only test allows the loop interface and a major portion of the DTE interface of the local DSU 5600 to be tested from a remote site over the actual digital data circuit During the Loop Only test the network receive data is looped to the network transmit data inside the DTE interface section of the DSU 5600 The physical DTE interface is ignored for this test block diagram illustrating the loopback point and the signal paths for this test is shown in Figure 3 4 To initia
21. on the tests indicated by the indicators described previously see the chapter Test Modes The front panel also contains two push button switches for selecting and controlling the various test modes for the DSU 5600 Select Test Each time this switch is pressed the current test mode is displayed by turning On one or more LEDs to indicate the specific test Once the desired test mode is displayed on the test status indicators the test is initiated by activating this switch This switch is also activated to termi nate any test in progress DSU 5600 User Manual 3 Chapter 1 Introduction ADRAN DSU 5600 TEST DTE LOOP RDL ERROR 1 SELECT TEST Rear Panel 1 2 3 4 5 1 DTE Status LEDs 2 Network Status Indicator Test Status Error Indicators 4 Select Push Button Switch 5 Test Start Stop Push Button Switch Alternate Action Figure 1 1 DSU 5600 Front Panel A drawing of the rear panel of the DSU 5600 is shown in Figure 1 2 The 25 pin connector labeled PRIMARY EIA 232 provides the synchronous asynchronous DTE interface Connection to the DDS network is made using the 8 pin modular jack 485 labeled TELCO The pin assignments for these connectors are listed in the sections Network Connections and DTE Connections All setup or configuration parameters for the DSU 5600 are selected with an eight position DIP switch that is accessible from t
22. orated in the DSU 5600 Loop Interface 4 wire full duplex Line Requirements Local loop specifications per AT amp T Pub 62310 Loop Rates 56 kbps or 64 kbps Receiver Sensitivity 45 dB DTE Interfaces EIA 232 synchronous or asynchronous DTE Data Rates 1 2 kbps 2 4 kbps 4 8 kbps 9 6 kbps 19 2 kbps 38 4 kbps 57 6 kbps asynchronous 56 kbps 64 kbps synchronous DTE Operating Modes Full or half duplex DSU 5600 User Manual 25 Chapter 4 Specifications Summary 26 Diagnostics Network test center activated CSU loopback on sealing current reversal in local loop DSU loopback User activated Self test Local loopback 54 activated remote loopback with 2047 test pattern DTE data data from external test set Power 115 VAC 4 Watts maximum Environment Temperature Operating 0 C to 50 C 32 F to 122 F Storage 20 C to 70 C 4 F to 158 F e Relative Humidity up to 95 non condensing DSU 5600 User Manual 61200 078L1 1 Index Symbols 2047 Test Pattern 16 A ALM Indicator 2 13 B Back Panel 5 Detect 2 10 Indicator 2 10 Clear Send 2 CS Indicator 2 Customer Service 8 D Data SetReady 10 Diagnostics 26 Digital Loopback Test 21 with Test Pattern 21 DTE Operating Modes 25 DTE and Loop Test Diagram 19 DTE Data Rates 25 DTE Indicator 2 13 16 61200 078L1 1 DTE Interface 1 2 8 25 DTE Only Test Diagram
23. te the Loop Only test perform the following steps 1 Press Select four times to turn On the loop test indicator 2 Press Test while this test indicator is On The Loop LED Flashes during initialization of the test and turns On solid once the test is in progress To terminate this test press Test DTEOR NETWORK TEST INTERFACE EQUIPMENT DTE LOOP INTERFACE TRANSMIT TRANSMIT INTERFACE INTERFACE d reed Den LOOP TX LOOP ONLY RD lt a SENE lt LOOP DTE RECEIVE RECEIVE INTERFACE INTERFACE Figure 3 4 Loop Only Test Diagram 20 DSU 5600 User Manual 61200 078L1 1 FAR END TESTS Chapter 3 TestModes Remote Digital Loopback RDL When the remote digital loopback RDL test is initiated at the local DSU 5600 it commands the remote DSU into loopback with the industry standard V 54 loopback pattern The loopback point and the signal paths for the remote DSU are the same as the Loop Only test for a local DSU Figure 3 4 This loopback test is performed with data from the terminal or test equipment To initiate the RDL test perform the following steps 1 Press the Select switch five times to turn On the RDL test indicator 2 Press Test while the test indicator is On The RDL LED Flashes during initialization of the test and turns On solid once the test is in progress To terminate this test press Test RDL with Test Pattern TP 61200 078L1 1
24. tions to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment CANADIAN EMISSIONS REQUIREMENTS This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the interference causing equipment standard entitled Digital Apparatus ICES 003 of the Department of Communications Cet appareil nuerique respecte les limites de bruits radioelectriques applicables aux appareils numeriques de Class A prescrites dans la norme sur le materiel brouilleur Appareils Numeriques NMB 003 edictee par le ministre des Communications CANADIAN EQUIPMENT LIMITATIONS Notice The Canadian Industry and Science Canada label identifies certified equipment This certification means that the equipment meets certain telecom munications network protective operational and safety requirements The Department does not guarantee the equipment will operate to the user s satisfac tion Before installing this equipment users should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equip ment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord The customer should be aware that co
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