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Chapter 5. Loop Back and BERT Testing

November 2001

E1 line local digital loop back

E1 line local digital loop back is performed by connecting the E1

link receive signal to the output of the transmit path, in the DSU.

This loop back test checks the performance of the local

ETU-

01A

, the remote

ETU-01A

and the connections between them,

as shown in Figured 5-2.

Figure 5-2. E1 link local digital loop back

User

DTE

Data

Port

E1 LINE

LOCAL ETU-01A

DSU

CSU

Summary of Contents for ETU-01A

Page 1: ...INSTALLATION and OPERATIONMANUAL Version 2 0...

Page 2: ......

Page 3: ...lation and Operation Manual March 2002 Third Printing This manual supports the following models ETU 01A AC 90 250VAC model ETU 01A DC 18 72VDC model This manual includes the updates for functional fir...

Page 4: ......

Page 5: ...cal Specifications 13 Chapter 2 Installation 19 2 1 General 19 2 2 Site Preparation 19 2 3 Mechanical Assembly 19 2 4 Electrical Installation 19 2 5 DIP Switches and Jumper Settings 24 Chapter 3 Opera...

Page 6: ...111 Appendix A I F Specifications 117 A 1 E1 Line Connectors 117 A 2 X 21 User Data Channel Connector 119 A 3 V 35 User Data Channel Connector 120 A 4 RS 530 User Data Channel Connector 121 A 5 RS 232...

Page 7: ...ed on the front panel via the RS 232 control port connection or via optional SNMP The SNMP option provides Simple Network Management Protocol System functions over a 10BASE T connection which allow th...

Page 8: ...tes at any n56 n64 fractional or unframed E1 speed 2 ETU TTU 530 RS 530 Module Provides one fully compliant EIA RS 530 interface on a female D type 25 pin connector Operates at any n56 n64 fractional...

Page 9: ...function over the WAN when matched to another ET10 module ET10A standalone or a compatible bridge utilizing standard HDLC protocol The interface connection is a straight MDI or crossover MDI X 10BASE...

Page 10: ...at any n56 n64 fractional or unframed E1 speed 9 ETU TTU ET10R Ethernet Router Module Provides an Ethernet IEEE802 3 or IEEE802 3u Router function over the WAN when matched to another ET10R module IP...

Page 11: ...he ETU 01A packs the data channel into user defined E1 link time slots The unused time slots may have IDLE code inserted in frame mode or have the receive side time slots data inserted in cascade mode...

Page 12: ...menu system the unit generates one of fourteen different test patterns according to ITU for direct end to end integrity testing The Error indicator flashes for each bit error detected Multiple clock s...

Page 13: ...ing E1 link transmit timing modes are available Recovery timing The ETU 01A E1 link transmit clock is locked to the recovered receive clock This is usually the timing mode selected for network operati...

Page 14: ...synchronous equipment connected to the data channel Clock mode DTE2 The ETU 01A data channel accepts the user transmit clock from ETC pin and receive clock from ERC pin provided by the DTE equipment c...

Page 15: ...to Point Application Fractional E1 data service is based on the assumption that the user data rate is a fraction of the available E1 bandwidth in multiples of 56K or 64K Figure 1 2 Fractional E1 Casca...

Page 16: ...sary in order for equipment receiving the E1 signal to be able to identify and extract the individual channels PCM 30 CAS transmission system use MFAS framing along with the FAS framing PCM 31 CCS tra...

Page 17: ...coded using the Alternate Mark Inversion AMI or HDB3 rule In the AMI format ones are alternately transmitted as positive and negative pulse whereas zeros are transmitted as a zero voltage level AMI is...

Page 18: ...n 12 November 2001 E1 link line coding The ETU 01A supports two E1 line codes AMI coding HDB3 coding E1 framing formats The ETU 01A supports three frame formats Unframed format FAS CCS PCM 31 format M...

Page 19: ...ce 75 ohms 120 ohms Relative Receive Level 0 to 43dB Pulse Amplitude Nominal 2 37V 10 for 75 ohms Nominal 3 00V 10 for 120 ohms Zero Amplitude 0 1V Transmit Frequency Tracking Internal Timing Loopback...

Page 20: ...64K is Codirectional line code Data Rate n 56kbps or n 64kbps where n equal 1 to 31 in CCS and n equal 1 to 30 in CAS Clock Modes RECOVERY Receive and transmit clock recovered to the synchronous DTE I...

Page 21: ...POWER Green Power Sig Loss Red E1 link signal loss SYNC Loss Red E1 link sync loss Alarm Red E1 link alarm include BPV error CRC4 error Frame slip All ones AIS Remote alarm TD Yellow Transmit data da...

Page 22: ...nalog loop back Data port local digital loop back Data port V 54 loop back BERT test pattern 511 2047 2 15 1 2 20 1 QRSS 2 23 1 All ones All zeros ALT Double ALT 11001100 3 in 24 1 in 16 1 in 8 1 in 4...

Page 23: ...1 Power supply Voltage AC Model 90 250 VAC auto detect DC Model 18 to 72 18 to 72VDC Frequency 47 to 63 Hz for AC power Power consumption 15 Watts Fuse 0 5A slow blow Environment Temperature 0 60 C 32...

Page 24: ...Chapter 1 Introduction 18 November 2001 This page left blank intentionally...

Page 25: ...72VDC for DC model unit Allow at least 10 cm 4 inch clearance at the rear of the ETU 01A for signal lines and interface cables 2 3 Mechanical Assembly The ETU 01A is designed for tabletop or bench in...

Page 26: ...emoving or replacing the fuse 2 4 2 Rear panel connectors Please refer to the User Data Channels table on page 10 for a description of the digital interface connectors located on the rear panel of the...

Page 27: ...ive data in ALARM relay contact 7 common 8 NO normally open 15 NC normally closed BNC coax connectors Two BNC coax connectors marked RX and TX Same function as the E1 line DB15 connector Data port sid...

Page 28: ...For applications using an RS 530 interface clock mode is selected DTE2 connect the ERC input clock to pins 20 A and 23 B RS 232 interface connector Appendix A 5 describes the interface connection for...

Page 29: ...ule is a standard MDI shielded RJ 45 A separate electronic manual in PDF format is provided with this module to cover setup and configuration of the router functions Cable and Termination Use a shield...

Page 30: ...nside the equipment is only permitted to authorized and qualified service personnel 2 5 2 Procedure a Turn power OFF Disconnect the power cord from the AC mains b Loosen the screws at the left right o...

Page 31: ...nce set 75 Ohm ALL ON Chassis GND Jumper Set this jumper to CON to connect logic ground to chassis Set to DIS to separate logic and chassis grounds Please refer to the following figure for location of...

Page 32: ...Chapter 2 Installation 26 November 2001 This page left blank intentionally...

Page 33: ...d Indicators All controls push button switches LCD display and LED indicators are located on the ETU 01A front panel The momentary on pushbutton switches are used to activate menu selections and selec...

Page 34: ...rational requirements Diagnostic loops are required The ETU 01A is turned on when its AC power cord is connected to an AC power outlet and the power switch is turned to the ON position The ETU 01A wil...

Page 35: ...is on If the LCD display back light is set to either AUTO or ON it will be lit Verify the ETU 01A is in operation by checking that the front panel LEDs match the following indicator conditions POWER O...

Page 36: ...S Y S T E M P A R A M E T E R Set the Master timing and remote mapping configuration E 1 L I N E P A R A M E T E R Set the Frame type CRC mode idle code Line code and RAI for the E1 link T I M E S L...

Page 37: ...data channel select pattern do error insertion and display error results C O N T R O L P O R T P A R A M E T E R Setup for the terminal console port speed Default is 9600 8bit no parity D A T E T I M...

Page 38: ...peration 32 November 2001 A L A R M B U F F E R D I S P L A Y Display the Alarm Buffer and remote alarm buffer P E R F O R M A N C E D I S P L A Y Displays the CRC 4 BPV bi polar violation E bit and F...

Page 39: ...browse the available parameters Available parameters under Master Timing are RECOVERY Timing is recovered from the main E1 link INT OSC Timing is provided by the internal oscillator of the ETU 01A DT...

Page 40: ...imeslot information to be passed to the remote unit To send mapping press ENTER twice From the SEND MAPPING sub menu press the Right Arrow key to the REMOTE MAPPING screen R E M O T E M A P P I N G C...

Page 41: ...s frame CRC etc Press ENTER on the parameter to select it with the cursors Now use the arrow keys to browse the available settings for that parameter The following is a breakdown of each parameter and...

Page 42: ...NTER to assign the TS use the arrow keys to move to the next or previous TS Designations shown are described as follows F F Framing CCS CAS always on TS 00 S S Signaling CAS always on TS 16 if in CAS...

Page 43: ...r 64K The second line shows the channel s bandwidth used In the above display the data port is using an RS530 interface clock mode set to E1 Recovery 64k multiplier and 256Kbps bandwidth 4 64K timeslo...

Page 44: ...o browse the available settings under the Data Port channel They are Multiplier value N64 or N56 default is N64 CTS ON or follow RTS default is ON Press the ENTER key to move the cursors to the Multip...

Page 45: ...ORT display is as follows D A T A P O R T L O O P B A C K O F F Use the arrow keys to browse the available options for both the E1 Line Loop back and the Data Port Loop back settings The details for b...

Page 46: ...Off or On default Off Use to start BERT Channel E1 or Data Default is E1 Pattern 511 2047 2e15 1 2e20 1 QRSS 2e23 1 All 1 All 0 Alt 0011 3in24 1in16 1in8 or 1in4 Default is 511 Err Ins NONE Single 10...

Page 47: ...screen shows the default settings for the Control Port Only the speed parameter is settable for the Control Port Press ENTER C O N T R O L P O R T S P E E D 9 6 0 0 b p s The arrow keys will browse th...

Page 48: ...define date and time The cursor will be in the year field Use the arrow keys to increment or decrement the year Press ENTER to save and move on to the month field Use the arrow keys again to change t...

Page 49: ...LIGHT and RESET TO DEFAULT While displaying the LCD LIGHT screen press ENTER Use the arrow keys to browse the available options for the LCD back lighting They are AUTO The backlight will automaticall...

Page 50: ...Alarm Buffer A L A R M B U F F E R D I S P L A Y Press ENTER and use the arrow keys to select between DISPLAY ALARM BUFFER DISPLAY REMOTE ALARM BUFFER and CLEAR ALARM BUFFER On the display screen pre...

Page 51: ...olations BPV count Current Error Seconds CURR ES Current Unavailable Seconds CURR UAS Long Term Errored Seconds LONG ES Long Term Unavailable Seconds LONG UAS Current Seconds CURR SEC and Long Seconds...

Page 52: ...R FRAME CCS CAS UNFRAME CRC 4 ON OFF CASCADE ON OFF IDLE CODE 7E 00 FF RAI ENABLE DISABLE LINE CODE HDB3 AMI IMPEDANCE 120 Ohms Display Only TIME SLOT MAPPING F Frame S Signal not assign active DATA P...

Page 53: ...2047 2e15 1 2e20 1 QRSS 2e23 1 ALL 1 ALL 0 ALT 0011 3in24 1in16 1in8 1in4 ERR INS NONE SINGLE ENTER 10e 1 10e 2 10e 3 10e 4 10e 5 10e 6 10e 7 RESULT Display CONTROL PORT PARAMETER SPEED 9600 default 3...

Page 54: ...ion 48 November 2001 ETU 01A Menu System Overview cont ALARM BUFFER DISPLAY DISPLAY ALARM BUFFER DISPLAY REMOTE ALARM BUFFER CLEAR ALARM BUFFER PERFORMANCE DISPLAY BPV CNT ERR SECS UAS LONG ES LONG UA...

Page 55: ...emale cable The ETU 01A acts as a DCE to the PC s DTE communications port A convenient application provided with the Microsoft Windows NT 9X operating systems is HyperTerminal Set the properties to ma...

Page 56: ...Chapter 4 Control Port Operation 50 November 2001 Figure 4 1 Example of terminal display...

Page 57: ...is the first screen seen after connecting Note that the first two items Display and Define deal with all the system settings The Display item will browse settings for viewing only while under Define...

Page 58: ...esult 8 Performance 9 SNMP Agent Information A ETU 01A Information Enter 1 A or Press ESC to previous menu Enter 1 to display the Timing Parameters Display Timing Parameter Master Timing RECOVERY Pres...

Page 59: ...CRC setting Cascade Mode Idle code RAI setting Line Code and E1 interface impedance for the E1 line Press ESC to return to the Display System Status menu and press 3 to display the Time Slot status D...

Page 60: ...isplay System Status menu and press 4 to display the Data Port parameter settings for the channel I F module Display Data Port Parameter TYPE RS530 MULTIPLIER N64 CTC ON V 54 Mode OFF SPEED 256Kbps Pr...

Page 61: ...uffer E1 Line SYNC Loss ON 00 08 24 16 40 57 E1 Line MRAI ON 00 08 24 16 40 58 E1 Line SYNC Loss OFF 00 08 24 16 41 06 E1 Line MRAI OFF 00 08 24 16 41 06 ETU 01A Power turn OFF 00 08 24 18 33 27 Press...

Page 62: ...0 Press ESC to previous menu or SPACE to review ENTER to clear Press ESC to return to the Display System Status menu and press 8 to display the Performance screen Display E1 Line Performance Bipolar v...

Page 63: ...ceiver IP Address 0 0 0 0 Severity Status Information Hardware Address 00 02 AB 01 56 57 Press ESC to previous menu ESC back to Display System Status and enter A to display the ETU 01A Information scr...

Page 64: ...ter 3 Test Function Parameter 4 Password 5 Reset Data to Default 6 EXIT DATE 2000 08 24 TIME 15 57 51 Enter 1 6 to select function Now we will look at defining the system parameters To do this enter 2...

Page 65: ...to previous menu The current master timing is shown as Recovery This means that the timing source is derived from the received E1 signal Press the appropriate number key to change the timing The chan...

Page 66: ...g is CCS To change it enter 1 3 Press ESC to exit and leave the setting unchanged Press ESC Press 2 to change the CRC 4 setting Define E1 Line CRC 4 Parameter CRC 4 OFF 1 OFF 2 ON Enter 1 2 or Press E...

Page 67: ...ine Idle Code Idle Code 7E Enter Code 00 FF Enter the new Idle code with the hex value 00 FF or to exit press ESC Press ESC and enter 5 to enable or disable RAI Remote Alarm Indication for the E1 line...

Page 68: ...Press ESC again to return to the top of the Define System menu Define System Parameter 1 Timing 2 E1 Line 3 Time Slot 4 Data Port 5 Date Time Enter 1 5 or Press ESC to previous menu To enter the Times...

Page 69: ...press 2 to assign the timeslot to the data port Press ENTER to move on to the next timeslot or ESC to exit the mapping function If we press the ENTER key now the second timeslot will be displayed Def...

Page 70: ...ine Time Slot Mapping 2 Send Time Slot to Far End Enter 1 2 or Press ESC to previous menu WAIT OK The message WAIT will be displayed while the data is being transferred OK will display following succe...

Page 71: ...256Kbps 1 Multiplier 2 CTS Enter 1 2 or Press ESC to previous menu Press the appropriate number 1 2 corresponding to the Data Port parameter to be defined Press 1 to define the multiplier for the dat...

Page 72: ...parameter for CTS Define Data Port CTS Parameter 1 ON 2 RTS Enter 1 2 or Press ESC to previous menu Enter the appropriate setting for CTS On always or follow RTS or press ESC to exit without changing...

Page 73: ...the Date press 1 Enter the 4 digit year followed by the 2 digit month single digit months must have a leading zero and complete with the 2 digit day single digit days must have a leading zero Define D...

Page 74: ...ne Date Time 1 DATE 2 TIME DATE 2000 08 24 TIME 16 27 05 Enter 1 2 or Press ESC to previous menu To return to the Define System Parameter menu and start the clock press ESC Define System Parameter 1 T...

Page 75: ...remote control the connected remote unit can change the mapping info of this unit Press ESC to reach the Define System Parameter menu and press 7 to setup the SNMP agent SNMP Agent Setup Menu 1 Set th...

Page 76: ...to the SNMP agent setup menu If we press 1 the screen will display Set the Agent Information 1 Local IP Address 192 168 0 10 2 Subnet Mask 255 255 255 0 3 Gateway IP Address 192 168 0 254 Enter 1 2 o...

Page 77: ...0 2 Input Access Permission Read Only Enter 1 2 or Press ESC to previous menu Enter 1 to set the input agent IP address address of the management workstation 2 to set access permission for the manage...

Page 78: ...s ESC to previous menu Press 4 to set the community string SNMP Agent Setup Menu 1 Set the Agent Information 2 Set Access Control Table 3 Set Trap Receivers Table 4 Set Community String Public 5 Save...

Page 79: ...vious menu Up until now none of the changes made have been saved to the SNMP card Press 5 to save the settings The display will show Wait Config SNMP Card Following completion the screen will revert t...

Page 80: ...lt 6 EXIT DATE 2000 08 24 TIME 17 14 42 Enter 1 6 to select function Now we will move on to setting the Test Function parameters press 3 Define Test Mode Function 1 LoopBack Test 2 Bert Test Enter 1 2...

Page 81: ...cal Payload 5 Remote Analog 6 Remote Payload Enter 1 6 or Press ESC to previous menu The choices presented are to turn OFF loop back or turn ON Local Analog Local Digital Local Payload Remote Analog o...

Page 82: ...ack Test Port E1 Line Loopback LOCAL ANALOG Data Port LoopBack LOOPBACK OFF 1 E1 Line 2 Data Port Enter 1 2 or Press ESC to previous menu Now we will select the E1 Line again Press 1 and turn OFF loop...

Page 83: ...Press ESC to previous menu Press ESC to back out to the Define Test Mode menu Press 2 to select BERT test Bert Test Parameter Function OFF Channel E1 Pattern 511 Error Insert NONE 1 Function 2 Channe...

Page 84: ...essing 2 and 1 repeatedly toggles the function on and off Press ESC Bert Test Parameter Function OFF Channel E1 Pattern 511 Error Insert NONE 1 Function 2 Channel 3 Pattern 4 Error Insert 5 Result Ent...

Page 85: ...or Press ESC to previous menu Enter 2 to select Data Port for testing Bert Test Channel Channel DATA 1 E1 Line 2 Data Port Enter 1 2 or Press ESC to previous menu Press ESC The Bert Test screen will s...

Page 86: ...11 B 3in24 C 1in16 D 1in8 E 1in4 Enter 1 E or Press ESC to previous menu In this example we will enter 9 to select the ALT 0101 pattern then press ESC Note the results screen below The function is ON...

Page 87: ...est Error Insert Error Insert NONE 1 NONE 2 SINGLE 3 10e 1 4 10e 2 5 10e 3 6 10e 4 7 10e 5 8 10e 6 9 10e 7 Enter 1 9 or Press ESC to previous menu Press 2 to insert single errors on command Bert Test...

Page 88: ...erted bit errors The error rate is about 1 in 10 million bits After viewing the BERT results press ESC Bert Test Parameter Function ON Channel DATA Pattern ALT Error Insert SINGLE 1 Function 2 Channel...

Page 89: ...t Test Parameter page Then press ESC again to exit to the Define Test Mode screen followed by ESC again to the top menu page CTC UNION TECHNOLOGIES CO LTD ETU 01A SNMP TERMINAL MODE SETUP MENU Ver 1 1...

Page 90: ...A Press 4 Password 1 Set Password 2 Clear Password Enter 1 2 or Press ESC to previous menu Enter 1 to set the password Enter Password Enter Password 4 Number Enter 1234 Password entry successful Press...

Page 91: ...234 Password is DISABLED Press ESC to previous menu Press ESC twice to return to the main menu CTC UNION TECHNOLOGIES CO LTD ETU 01A SNMP TERMINAL MODE SETUP MENU Ver 1 16 1 Display System Status 2 De...

Page 92: ...ress ENTER to confirm ESC to previous menu Press ENTER to reset to factory defaults To exit without resetting press ESC Press ENTER CTC UNION TECHNOLOGIES CO LTD ETU 01A SNMP TERMINAL MODE SETUP MENU...

Page 93: ...ctory defaults The clock has also been reset to March 1 1999 To exit the terminal mode press 6 The terminal connection will be dropped and the following will be displayed ETU 01A TERMINAL MODE IS DISC...

Page 94: ...Chapter 4 Control Port Operation 88 November 2001 This page left blank intentionally...

Page 95: ...he console terminal menu or via SNMP when option is installed The ETU 01A offers bit error rate testing on both the synchronous data channel and the E1 line using a locally generated pseudo random seq...

Page 96: ...TD Yello w ON when SPACE is being transmitted Flashing when data is transmitted Error Red ON when BERT function is activated and detects bit errors Test Red ON when the ETU 01A is in any loop back mod...

Page 97: ...s of E1 link frame sync Check cable connections to the E1 line connector Check other equipment providing the same frame link to the ETU 01A Replace the ETU 01A ON OFF E1 LINK BPV Bipolar violations in...

Page 98: ...op back E1 line remote digital loop back Data Port local analog loop back Data Port local digital loop back Data Port V 54 remote loop back The user activated loop back functions are accessed from the...

Page 99: ...l of the Data port to the receive path of the Data port The Data Port must receive its own transmission This loop back fully tests the local ETU 01A operation and the connections to the local DTE Duri...

Page 100: ...rmed by connecting the E1 link receive signal to the output of the transmit path in the DSU This loop back test checks the performance of the local ETU 01A the remote ETU 01A and the connections betwe...

Page 101: ...cting the E1 link receive signal to the output of the transmit path before the Digital Service Unit DSU This loop back test checks the performance of the local ETU 01A the remote ETU 01A and the conne...

Page 102: ...U 01A the remote ETU 01A and the connections between them as shown in Figured 5 4 Figure 5 4 E1 link remote analog loop back note The remote loop back codes also referred to as data link messages for...

Page 103: ...unit The remote unit then connects its E1 link receive signal to the output of the transmit path before the Digital Service Unit DSU This loop back test checks the performance of the local ETU 01A th...

Page 104: ...ocal analog loop back is performed by connecting the data channel transmit data TD to the input of the receive path RD before the CSU as shown in Figure 5 6 The test signal is provided by the local DT...

Page 105: ...al digital loop back is performed by connecting the local data channel receive data RD to the data channel transmit input TD as shown in Figure 5 7 The test signal is then provided by the remote user...

Page 106: ...ions between them as shown in Figured 5 8 Figure 5 8 Data Port V 54 remote loop back Integrated Bit Error Rate Test BERT During Data Port BERT testing the local DTE is disconnected and the DSR line is...

Page 107: ...ive output is connected to a pattern tester The tester compares the received and transmitted patterns and detects errors BERT local loop back For a local test use the E1 Line local analog loop back or...

Page 108: ...hown in Figure 5 10 Additionally you may use the local site s E1 link remote analog remote payload or Data Port V 54 loop back to return the data back to the local DTE Figure 5 10 BERT used for system...

Page 109: ...nal firmware for older versions of the ETU01 A as the older firmware does not support the SNMP card functions 6 1 1 Required tools and supplies 1 No 2 Philips head screwdriver 2 thread lock compound s...

Page 110: ...eating and that no pins were inadvertently bent during insertion 5 Install the SNMP pc board by aligning the pins of the SNMP card with the 20pin connector and seat the card Ensure that no pins are be...

Page 111: ...Chapter 6 SNMP Option 105 November 2001 Figure 6 1 Firmware Chip Location Figure 6 2 SNMP Installation Exploded View IC reference mark...

Page 112: ...ion over standard 10BASE T Ethernet The SNMP agent is compliant with the SNMPv1 standard SNMP communication uses the User Datagram Protocol UDP UDP is a connectionless transport protocol part of the I...

Page 113: ...ponse message setRequest Command for manipulating the value of an instance within the managed node The managed node responds with a getResponse message trap Management message carrying unsolicited inf...

Page 114: ...Read write Instances of an object can be read or set Write only Instances of an object can be set but cannot be read Not accessible Instances of an object cannot be read nor set 6 2 4 MIB Structure T...

Page 115: ...e enterprise specific branch of MIB s each enterprise manufacturer can be assigned a number which is its enterprise number The assigned number designates the top of an enterprise specific sub tree of...

Page 116: ...of the communities which are authorized to communicate with it and the access rights associated with each community this is the SNMP community name table of the entity In general SNMP agents support t...

Page 117: ...0 OFF 2 casCADE 1 ON 3 idleCode 00 FF 0 Disable 3 rAI 1 Enable 0 HDB3 4 lineCode 1 AMI 0 120 ohm 1 e1LineEntry 5 impedance 1 75 ohm 0 NC 2 timeSlotEntry tS0 tS1 31 1 CH 1 0 N64 0 multiplier 1 N56 0 Al...

Page 118: ...0 OFF 0 function 1 ON 0 CH 1 1 CH 2 2 CH 3 4 CH 4 5 SL ML 1 channel 6 SL SL 0 511 1 2047 2 2e15 1 3 2e20 1 4 QRSS 5 2e23 1 6 ALL 1 7 ALL 0 8 0011 9 3 in 24 10 1 in 16 11 1 in 8 2 pattern 12 1 in 4 0 N...

Page 119: ...C 56 112 168 224 280 336 392 448 504 560 616 672 728 784 840 896 N64 NC 64 128 192 256 320 384 448 512 576 640 704 768 832 896 960 1024 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 N56 952 1008 106...

Page 120: ...10 Sub Link Signal Loss 1 On 2 Off 11 Sub Link SYNC Loss 1 On 2 Off 12 Sub Link AIS 1 On 2 Off 13 Sub Link RAI 1 On 2 Off 14 Sub Link MRAI 1 On 2 Off 15 Sub Link BPV 0 None 16 Sub Link Frame Slip 0 N...

Page 121: ...message Error status On Off 0 Alarm Buffer Empty 0 None 1 Power Turn 1 On 2 Off 2 Main Link Signal Loss 1 On 2 Off 3 Main Link SYNC Loss 1 On 2 Off 4 Main Link AIS 1 On 2 Off 5 Main Link RAI 1 On 2 O...

Page 122: ...Chapter 6 SNMP Option 116 November 2001...

Page 123: ...pe connector Pin Designation Direction Function 1 TTIP From ETU 01A Transmit data 2 FG Frame ground 3 RTIP To ETU 01A Receive data 4 FG Frame ground 5 6 7 Alarm relay common Alarm Relay 8 Alarm relay...

Page 124: ...2001 A 1 2 BNC connector Conn Pin Designation Direction Function Center TTIP From ETU 01A Transmit data TX Sleeve TRING Signal return Center RTIP To ETU 01A Receive data RX Sleeve RRING Signal return...

Page 125: ...T B To ETU 01A Serial digital data from DTE Received Data 4 11 R A R B Fm ETU 01A Serial digital data at the output of the ETU 01A receiver Request to Sent 3 10 C A C B To ETU 01A A ON signal to the E...

Page 126: ...ETU 01A Constantly ON except during test loops Data Terminal Ready H DTR To ETU 01A Not used Data Carrier Detect F DCD From ETU 01A Constantly ON except when a loss of the received carrier signal is d...

Page 127: ...22 CC A CC B From ETU 01A Constantly ON Except during test loops Data Terminal Ready 20 23 CD A CD B To ETU 01A DTR not used used for a received serial data rate clock input from the DTE Data Carrier...

Page 128: ...et Ready 6 CC Fm ETU 01A Constantly ON Except during test loops Data Terminal Ready 20 CD To ETU 01A DTR not used used for a received serial data rate clock input from the DTE Data Carrier Detect 8 CF...

Page 129: ...sired Clear to Sent 5 13 9 27 CS A CS B Constantly ON Data Set Ready 6 22 11 29 DM A DM B Constantly ON Except during test loops Data Terminal Ready 20 23 12 30 TR A TR B DTR not used used for a recei...

Page 130: ...wired in accordance with Table A 8 SIGNAL FUNCTION PIN DIRECTION DESCRIPTION Protective Ground 4 10 Chassis ground May be isolated from Signal Ground Signal Ground 8 Common signal ground Transmitte d...

Page 131: ...0 1 5V 0 3V Speed 2048K Max SIGNAL FUNCTION DIRECTION DESCRIPTION Received Data Fm ETU 01A Serial NRZ data at the output of the ETU 01A receiver Received Timing Fm ETU 01A Serial NRZ timing at the out...

Page 132: ...tension The physical interface for ET10 is a RJ 45 connector with the pin assignment as follows Normal Crossover 1 Tx 1 Rx 2 Tx 2 Rx 3 Rx 3 Tx 6 Rx 6 Tx DIP Switch Settings DIP STATE FUNCTION 1 ON 2 O...

Page 133: ...bled is used it is possible to monitor the end to end data transmission performance The error detection information is derive from the data payload by performing a cyclic redundancy check CRC The resu...

Page 134: ...ent second are collected in the current CRC error events register The register is updated every second Note Register contents can be displayed at any time from the LCD a connected console or via SNMP...

Page 135: ...rent 15 minute interval Current unavailable seconds UAS An unavailable second is any second in which a failed signal state exists The data is collected for the current 15 minute interval Long term err...

Page 136: ...urrent 15 minute interval The display is updated every second 0 900 CURR UAS Number of UAS measured during the current 15 minute interval The display is updated every second 0 900 LONG ES Number of ES...

Page 137: ...in tandem full space In either situation one standard rack unit space is required Each rack mount kit provides all the necessary hardware for a complete installation Figure C 1 Rack Mount Installatio...

Page 138: ...ease refer to the following drawing examples for this application Figure C 2 Tandem Units Mounting Exploded Figure C 3 Tandem Units Mounting Detail The tandem kit includes two 2 rack mount adapters on...

Page 139: ...NOTES 133 November 2001...

Page 140: ...NOTES 134 November 2001...

Page 141: ...gies Inc Attn Technical Support Division From Company Name Tel Fax MODEL ETU 01A AC ETU 01A DC ACTIVITY As attached in DIP switch setting table SYS CONFIGURATION Question Fax 886 2 27991355 Tel 886 2...

Page 142: ...setting Suggested System Parameter Master Timing RECOVERY INT OSC DTE1 DTE2 DTE3 E1 Line Frame UNFRAMED CCS CAS CRC 4 OFF ON CASCADE OFF ON IDLE CODE 7E 00 FF RAI DISABLE ENABLE LINE CODE HDB3 AMI IM...

Page 143: ......

Page 144: ...Technologies Co Ltd Far Eastern Vienna Technology Center Neihu HI TEC Park 8F No 60 Zhouzi St Neihu 114 Taipei Taiwan Phone 886 2 2659 1021 Rep Fax 886 2 2799 1355 E mail mailto info ctcu com http www...

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