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Chapter 5. Statistics

61200663L1-1

OSU 300 User Manual

5-3

Figure 5-2. Current Alarm Count

Figure 5-3. 24-Hour Alarm History

When a > or < symbol appears in the upper corner of the screen, you can
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Содержание 1200218L1

Страница 1: ...er Manual 61200663L1 1B May 2001 1200663L1 Single Mode SC 1200663L2 Multi mode SC 1200663L4 Multi mode ST 1200218L1 HSSI DTE Interface Card 1200219L1 V 35 DTE Interface Card 1200284L1 Quad DSX 1 Inter...

Страница 2: ...rk of Hewlett Packard Company Spectrum is a registered trademark of Cabletron Netview is a registered trademark of IBM 901 Explorer Boulevard P O Box 140000 Huntsville AL 35806 256 963 8000 2001 ADTRA...

Страница 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...

Страница 4: ...nd can radiate radio fre quency energy and if not installed and used in accordance with the instruction man ual may cause harmful interference to radio frequencies Operation of this equipment in a res...

Страница 5: ...y 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 CONSTITUTE...

Страница 6: ...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...

Страница 7: ...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...

Страница 8: ...viii...

Страница 9: ...rd 1 5 Quad DSX 1 Card 1 5 Chapter 2 Installation and Operation Receiving Inspection 2 1 Shipping Contents 2 1 Customer Provides 2 1 Installing the Unit 2 2 Rackmount Installation 2 2 Desktop Installa...

Страница 10: ...2 12 LOS 2 12 DTE Port LEDs 2 13 Chapter 3 Configuration DS3 Network 3 2 DS3 Timing 3 2 Remote Auto Configuration 3 2 XCV Threshold 3 2 Multiplexing Mode 3 3 DTE Ports 3 3 Port Selections 1 4 3 4 Conf...

Страница 11: ...3 17 Save Configuration 3 18 Chapter 4 Status Network State 4 2 Network Alarm 4 2 Remote Status Alarm 4 3 Remote Status Data Link 4 3 DTE Ports 4 4 Interface Type 4 4 Port Status 4 4 Bandwidth 4 4 DTE...

Страница 12: ...ack 6 4 Payload BERT 6 5 DTE Loopback 6 5 Payload and DTE Loopback 6 6 Remote Port Payload Loopback 6 7 Remote Payload Loopback with BERT 6 7 Quad DSX 1 Diagnostic Options 6 7 Data Mode 6 7 x Payload...

Страница 13: ...e Port Full T3 Bandwidth 7 1 Point to Point Multiport Application 7 2 Fractional T3 Carrier Application 7 4 Remote SNMP Management Application 7 6 Voice Application 7 7 Appendix A Pinouts A 1 Appendix...

Страница 14: ...Table of Contents xiv OSU 300 User Manual 61200663L1 1...

Страница 15: ...gure 3 6 Timed Profiles Screen 3 10 Figure 3 7 Example of a Profile Configuration Menu 3 11 Figure 3 8 System Management Configuration Menu 3 12 Figure 3 9 Trap Generation Menu 3 13 Figure 3 10 System...

Страница 16: ...10 T1 Payload Loopback Test 6 8 Figure 6 11 Framer Loopback Test 6 8 Figure 6 12 T1 Local Loopback Test 6 9 Figure 6 13 Line Loopback Test 6 9 Figure 6 14 Payload Loopback Test 6 10 Figure 6 15 DTE L...

Страница 17: ...8 DTE Port Trap Description 3 15 Table 3 9 Quad DSX 1 Port Trap Description 3 15 Table 4 1 LA and LB Leads 4 6 Table 7 1 Single Port Full T3 Bandwidth Application Example 7 2 Table 7 2 Multiport Appli...

Страница 18: ...List of Tables xviii OSU 300 User Manual 61200663L1 1...

Страница 19: ...ata The OSU 300 contains a built in HSSI high speed serial interface port and three expansion slots which accept additional HSSI V 35 or Quad DSX 1 interface cards The HSSI interfaces support rates be...

Страница 20: ...ocal and remote units Simplified configuration through detailed VT 100 terminal menu structure OPTICAL INTERFACE PORT The optical interface of the OSU 300 consists of either a single mode or a multi m...

Страница 21: ...unit access and control by a network manager through either the auxiliary AUX control port or the 10BaseT local area network LAN port The OSU 300 supports the MIB II standard RFC 1213 and 1407 and the...

Страница 22: ...he rear of the OSU 300 With optional HSSI cards installed the total 44 2 Mbps bandwidth of the DS3 can be divided among the total number of ports to provide multiple data channels over the DS3 The tot...

Страница 23: ...erface card plugs into the card slots on the rear of the OSU 300 This card allows you to transport up to four DSX 1 lines per card over the DS3 interface of the OSU 300 along with high speed data from...

Страница 24: ...Chapter 1 Introduction 1 6 OSU 300 User Manual 61200663L1 1...

Страница 25: ...his manual Keep the original shipping container to use for future shipment or verification of damage during shipment SHIPPING CONTENTS The OSU 300 shipment includes the following items The OSU 300 uni...

Страница 26: ...sure at one of the three available positions 2 After the flanges have been installed position the OSU 300 at the correct location within the rack and secure the mounting flanges to the mounting rails...

Страница 27: ...o DB 25 female connector and the 8 position modular to 8 position modular cable connect a VT 100 terminal device to the CONTROL interface jack on the front panel of the unit REVIEWING THE REAR PANEL T...

Страница 28: ...able 2 DC Terminal Block Attaches to input power cable for supplying power to the unit 3 DTE Ports 2 4 Interface expansion slots with covers in place 4 DTE Port 1 Integral HSSI interface 5 Alarm Conne...

Страница 29: ...4 Expansion Slots The OSU 300 rear panel contains three expansion slots DTE ports 2 4 for installing optional interface cards Currently available cards include the HSSI card P N 1200218L1 the V 35 ca...

Страница 30: ...the main board of the OSU 300 This relay activates any time the OSU 300 detects an alarm condition on the high speed network interface Table 2 1 describes the alarm connector terminal block Use the A...

Страница 31: ...sceivers are 28dB single mode and 9dB multi mode These budgets are calculated as follows Single Mode Worst case optical transmit power 5dBm Worst case optical receiver sensitivity 34dBm Calculations 3...

Страница 32: ...When powered by the AC mains supply the unit operates normally within specification when supplied with AC voltages from 190 264 VAC at 47 53 Hz The 48 VDC source interfaces to the rear panel of the u...

Страница 33: ...Appendix A gives the pinout VT 100 Terminal Connection To control the OSU 300 using a VT 100 terminal follow this procedure 1 Configure the VT 100 terminal for 9600 19200 38400 or 57600 baud 8 bit ch...

Страница 34: ...sion and allow approximately 20 seconds for initialization 4 Press Enter repeatedly until the password prompt appears 5 Enter the password The factory default password is adtran all lower case The MAI...

Страница 35: ...See the chapter Configuration on page 3 1 for more detailed information Diagnostics Performs loopback and BERT tests See the chapter Diagnostics on page 6 1 for more detailed information If you want t...

Страница 36: ...mote end OSU 300 The LED flashes when the unit is being accessed locally through the front panel CONTROL port Optical Interface LEDs The following LEDs provide information on the optical interface In...

Страница 37: ...terface is performing a BERT test TD This LED indicates the OSU 300 DTE port is transmitting data RD This LED indicates the OSU 300 DTE port is receiving data LED Condition Off No option card is insta...

Страница 38: ...Chapter 2 Installation and Operation 2 14 OSU 300 User Manual 61200663L1 1...

Страница 39: ...local OSU 300 The CONFIGURATION menu consists of the following submenus relating to specific interfaces or functions DS3 NETWORK DTE PORTS SYSTEM MANAGEMENT UTILITIES and SAVE CONFIGURATION Figure 3 1...

Страница 40: ...DS3 NETWORK fields follow the figure Figure 3 2 DS3 Network Configuration Menu DS3 Timing Set the timing to LOOP if the OSU 300 is to derive timing from the network set to LOCAL if the unit is to be t...

Страница 41: ...low full bandwidth rates When the user switches the multiplexing mode the system will reboot causing service interruption Loading default settings does not reset this option DTE PORTS The DTE PORTS me...

Страница 42: ...mples Descriptions of the individual fields follow the illustration The descriptions are listed in tables based on the DTE port interface type HSSI V 35 or Quad DSX 1 Table 3 1 on page 3 5 lists the m...

Страница 43: ...handshaking signals For the HSSI interface the terminal equipment available TA signal must be asserted by the DTE For V 35 DTR is required if the TR field in this menu is set to IDLE WHEN OFF otherwi...

Страница 44: ...ces These selections are listed in Table 3 2 Table 3 2 Additional V 35 Interface Port Configuration Selections SELECTION DESCRIPTION CS Selects the control mode for the clear to send CS lead FORCED ON...

Страница 45: ...tion from the network TRANSMIT CLOCK See the following section for a description of this item Table 3 2 Additional V 35 Interface Port Configuration Selections Continued SELECTION DESCRIPTION SELECT I...

Страница 46: ...t must be configured for the same framing type Table 3 3 DSX 1 Interface Port Configuration Selections SELECTION DESCRIPTION INTERFACE TYPE This read only status field displays QUAD DSX 1 indicating t...

Страница 47: ...ource of timing The available timing sources are described below DS3 The timing for both the near end and far end Quad DSX 1 cards is derived from the DS3 interface All DTE devices connected to the DS...

Страница 48: ...d 2 The PROFILE CONFIGURATION menus allow you to change the PORT STATUS and NX75K BLOCKS options for HSSI and V 35 ports See page 3 5 for descriptions of these options This screen also allows you to e...

Страница 49: ...t or 2 the profile is disabled manually through the ACTIVE PROFILE selection Active Profile Use this field to either manually force a profile to become active regardless of the time of day or to disab...

Страница 50: ...or Gateway IP Address Enter the gateway IP address of the OSU 300 This address is necessary only if the OSU 300 and the network manager are connected through a gateway node If an IP packet is to be se...

Страница 51: ...ment Match the OSU 300 to the SNMP manager for trap privileges Trap IP Addresses Enter up to five SNMP manager IP addresses to which the OSU 300 sends traps Trap Generation This field determines which...

Страница 52: ...when the unit receives indication from the far end unit through the FEAC channel that the far end unit has lost frame synchronization with the network Yellow Alarm RAI when the unit receives indicatio...

Страница 53: ...ad or write community names Table 3 7 Network Test Trap Descriptions TRAP TYPE IF ENABLED THIS TRAP IS SENT Network Test In when the unit goes into a DS3 network test either commanded locally or remot...

Страница 54: ...he IP Security option If enabled the unit accepts management commands and Telnet sessions from the IP addresses entered into the IP HOSTS fields IP Hosts Enter up to sixteen management station IP addr...

Страница 55: ...is connected to an audible alarm If enabled the alarm circuit is activated when a network alarm occurs UTILITIES The UTILITIES menu allows you to view OSU 300 system information including self test r...

Страница 56: ...on when powered down IF THE SELF TEST RESULTS ARE THEN PASS the self test was successful and the unit is ready to use BAD RAM DATA BAD RAM ADDRESS BAD CHECKSUM BAD BOOT SECTOR DS3F LOOPBACK FAILURE AR...

Страница 57: ...User Manual 4 1 Chapter 4 Status View port status information by selecting 1 STATUS from the MAIN menu Information for the network port and the DTE ports is provided Figure 4 1 shows the STATUS menu F...

Страница 58: ...tion See the ALARM STATE field in this menu to determine the alarm type In Test The unit is currently in test mode The DIAGNOSTICS menu provides information on test type Condition Description Normal N...

Страница 59: ...to zero LOS Red Alarm The unit has lost the Rx signal OOF The unit detects an out of frame condition from the network Idle The unit detects an idle sequence from the network Service is immediately ava...

Страница 60: ...fer according to the interface type This field does not apply to Condition Description Inactive The port is installed but idle Activate a port through the PORT STATE field of the DTE PORT CONFIGURATIO...

Страница 61: ...Red The DSX 1 port detects a loss of signal and is in red alarm OOF The DSX 1 port detects an out of frame condition from the network Yel The DSX 1 port detects a yellow alarm condition Blue The DSX...

Страница 62: ...condition reflected by this lead is dependent upon the LA lead See Table 4 1 LC loopback circuit C Asserted by the unit to request a loopback from the DTE TM test mode Asserted by the OSU 300 when eit...

Страница 63: ...Interface Leads RS Request to send CS Clear to send CD Carrier detect TR Data terminal ready SR Data set ready LL Local DTE port loopback RL Remote port payload loopback TM Test mode Asserted by the O...

Страница 64: ...Chapter 4 Status 4 8 OSU 300 User Manual 61200663L1 1...

Страница 65: ...the MAIN menu Alarm information and performance parameters are available for both the near and far ends of the network see Figure 5 1 If a Quad DSX 1 card is installed the menu item OTHER STATISTICS a...

Страница 66: ...hese fields is for the given time period if any since the last reset The cumulative alarm count continues indefinitely until CLEAR ALL DS3 ALARM COUNTS is selected See Figures 5 2 through 5 4 for exam...

Страница 67: ...al 5 3 Figure 5 2 Current Alarm Count Figure 5 3 24 Hour Alarm History When a or symbol appears in the upper corner of the screen you can use the arrow keys on your keyboard to scroll right or left to...

Страница 68: ...e Parameters View performance parameter information in one of the three time period selections Information in these fields is for the given time period since the last reset When viewing the 24 hour hi...

Страница 69: ...0 User Manual 5 5 of the performance parameter screens Descriptions of each field on these screens follow the illustrations Figure 5 6 Network Statistics Menu for Current 15 Minute Interval Figure 5 7...

Страница 70: ...port is unavailable for data delivery This means that the T3 link is down or in test or that the signaling state is down Severely Errored Framing Seconds SEFS Number of seconds with one or more out o...

Страница 71: ...CES Number of seconds with one or more CCVs one or more out of frame defects or a detected incoming AIS This count is not incremented when UASs are counted C Bit Severely Errored Seconds CSES Number...

Страница 72: ...Chapter 5 Statistics 5 8 OSU 300 User Manual 61200663L1 1...

Страница 73: ...esponding number and press Enter The individual port menus provide loopback and BERT selections BERT configuration options and results are given in the right column of the main DIAGNOSTICS menu Diagno...

Страница 74: ...1 Figure 6 1 Diagnostics Main Menu DS3 When you access the DS3 s diagnostic options by selecting 1 from the main DIAGNOSTICS menu the screen shown in Figure 6 2 displays Figure 6 2 DS3 Diagnostics Men...

Страница 75: ...yload bandwidth Only one BERT test may be performed at a time Remote DS3 Loopback This selection initiates a DS3 loopback test for the remote unit Remote DS3 Loopback with BERT This selection initiate...

Страница 76: ...s of the menus follow the figure Figure 6 4 HSSI or V 35 Port Diagnostics Menu Data Mode Ends a test already in progress Payload Loopback This selection initiates a PAYLOAD LOOPBACK test for all data...

Страница 77: ...ime This test is normally performed from the remote and local ends simultaneously to determine whether the errors are coming from the transmit or the receive direction see Figure 6 6 Figure 6 6 Payloa...

Страница 78: ...k Test Payload and DTE Loopback Select this test to perform payload and DTE loopbacks simultaneously The individual tests are described on page 6 3 and page 6 5 respectively Figure 6 8 shows a block d...

Страница 79: ...fy the integrity of the link between the selected port of the local OSU 300 and the corresponding remote OSU 300 port During this test the remote unit loops back all data for the selected port while t...

Страница 80: ...test Figure 6 10 T1 Payload Loopback Test x Framer Loopback During this test all information from the network side DS3 for the selected DSX 1 interface is looped back towards the network See Figure 6...

Страница 81: ...trates the circuitry deeper into the Quad DSX 1 interface card See Figure 6 12 for an illustration of this test Figure 6 12 T1 Local Loopback Test x Line Loopback During this test all information on t...

Страница 82: ...back All other ports are unaffected See Figure 6 14 for an illustration of this test Figure 6 14 Payload Loopback Test DTE Loopback During this test the combined information from the four DSX 1 inter...

Страница 83: ...t is a combination of a payload loopback and a DTE loopback All of the near end and far end DSX 1 interfaces on the selected Quad DSX 1 interface card are looped back See Figure 6 16 for an illustrati...

Страница 84: ...Loopback Test BERT Configuration The following options apply to any of the tests involving BERT testing Pattern Select the desired test pattern for the BERT test see Figure 6 18 on page 6 13 The inte...

Страница 85: ...the unit to be compatible with test equipment which generates inverted BERT patterns BERT Information Fields The following five fields provide information about the most recently issued BERT test Thes...

Страница 86: ...set Current Err Sec Displays the number of BERT errors received by the unit in the last second Insert Error Inserts one error into the data stream Clear Errors Clears the error counts given in the BER...

Страница 87: ...hese examples may need modification based on your network configuration SINGLE PORT FULL T3 BANDWIDTH In applications requiring full T3 bandwidth the OSU 300 operates with other vendor products that s...

Страница 88: ...ration example of this application using a Quad DSX 1 card is on page 7 7 This application shown in Figure 7 2 on page 7 3 supports two subnet connections via two different routers a video conferencin...

Страница 89: ...Conferencing Video Conferencing Main Frame Main Frame Private Fiber Network V 35 6 Mbps V 35 1 5 Mbps V 35 1 5 Mbps V 35 6 Mbps Table 7 2 Multiport Application Configuration Example Local OSU 300 Remo...

Страница 90: ...e carrier s internet POP point of presence and a high speed V 35 connection at the customer s router The carrier manages both the local and remote OSU 300s via SNMP Table 7 3 on page 7 5 gives an exam...

Страница 91: ...Line Length Short DS3 Timing Loop DS3 Timing Loop Data Link Enabled Data Link Enabled DTE 1 Port State Disabled Port State Disabled DTE 2 Port State Enabled Port State Enabled HSSI Local Nx75k blocks...

Страница 92: ...l unit has the remote unit s IP address in its REMOTE IP ADDRESS field That same IP address is entered into the remote unit s LOCAL IP ADDRESS field Table 7 4 gives an example configuration for this a...

Страница 93: ...n Figure 7 5 Voice Application Private Fiber Network Main Frame Video Conferencing Video Conferencing Main Frame V 35 6 Mbps V 35 6 Mbps V 35 1 5 Mbps HSSI 18 Mbps HSSI 18 Mbps V 35 1 5 Mbps PBX Route...

Страница 94: ...g Source DS3 DSX 1 Port 1 Port State Enabled Framing ESF Line Coding B8ZS Line Length 0 to 133 feet DSX 1 Port 2 Port State Enabled Framing ESF Line Coding B8ZS Line Length 0 to 133 feet DSX 1 Timing...

Страница 95: ...nts for the connectors located on the OSU 300 For more information on these connectors see the chapter Installation and Operation on page 2 1 Table A 1 Control Port Pin Assignments RJ Pin Function Dir...

Страница 96: ...lable CA 4 29 O Receive Data RD 5 30 O Loopback Circuit C LC 6 31 O Send Timing ST 7 32 Signal Ground SG 8 33 I DTE Available TA 9 34 I Terminal Timing TT 10 35 I Loopback Circuit A LA 11 36 I Send Da...

Страница 97: ...RD The positive signal for the RD differential pair This signal contains the serial input data stream received from the network 4 5 N A not used 6 RD The negative signal for the RD differential pair...

Страница 98: ...al Element Timing SCT A AA 114 Transmitter Signal Element Timing SCT B U 113 External TX Signal Element SCX A W 113 External TX Signal Element SCX B NN Test Indicator TI Table A 5 Quad DSX 1 Interface...

Страница 99: ...ST style connectors for single mode and multi mode fiber DTE Interface s Integrated HSSI port Three option slots accept any combination of interface cards HSSI ports are SCSI II 50 pin female V 35 por...

Страница 100: ...Integrated 10BaseT Ethernet and SLIP PPP async port MIB II RFC 1213 and 1407 compliant ADTRAN Enterprise MIB for extended monitoring and control configuration Agency Approvals FCC Part 15 Class A UL a...

Страница 101: ...CA communications equipment available CCITT Consultive Committee for International Telephony and Telegraphy CD carrier detect CO central office CPE customer premise equipment CRC cyclic redundancy ch...

Страница 102: ...ntrol FEBE far end block error HSSI high speed serial interface IP internet protocol KA keep alive LAN local area network LCV line coding violation LED light emitting diode LES line errored seconds LL...

Страница 103: ...loopback RL remote loopback RMA return material authorization RS request to send RTS request to send Rx receive SEFS severely errored framing seconds SES severely errored seconds SLIP serial line inte...

Страница 104: ...Appendix C Acronyms Abbreviations C 4 OSU 300 User Manual 61200663L1 1...

Страница 105: ...bipolar line coding format in T1 transmission sys tems whereby successive ones are alternately inverted ANSI American National Standards Institute A non profit organization that coordi nates voluntar...

Страница 106: ...a computer can process bit error The receipt of an encoded bit that differs from what was sent by the transmitter bit rate The speed at which bits are transmitted usually expressed in bits per second...

Страница 107: ...t in the DS3 string not used for framing parity or alarm indica tion CCITT Consultive Committee for International Telephony and Telegraphy A standards organization that devises and proposes recommenda...

Страница 108: ...te branch exchanges PBXs data terminals and customer owned coin operated tele phones CSU channel service unit A device used to connect a digital phone line coming in from the phone company to either a...

Страница 109: ...g equipment DDS is offered on an inter LATA basis by AT T and on an intra LATA basis by the Bell operating companies delay The amount of time by which a signal is delayed A round trip transmission del...

Страница 110: ...es telecommunications services ES errored seconds A second with one or more coding violations CVs Ethernet Transmission protocol for packet switching LANs facilities The equipment used by carriers to...

Страница 111: ...on processing equipment in a limited geo graphic area local loopback LL A type of test used to verify the operation of the local terminal equipment the CSU and the connection between the two The signa...

Страница 112: ...int circuit A single communications circuit that has more than two terminations NC normally closed Relay switch contacts that remain closed when inactive near end The unit on site NI network interface...

Страница 113: ...rs to the world wide voice tele phone network available for public use red alarm Unframed all ones signal keep alive signal A red alarm is declared on detec tion of LOS or OOF not caused by an alarm i...

Страница 114: ...ternet protocol SR data set ready A signal on the DTE interface that indicates if a connection exists and if the devices are ready to start handshaking control signals so communica tions can begin ST...

Страница 115: ...e signaling of data over telecommunications channels V 35 A standard for trunk interface between a network access device and a packet network that defines signaling for data rates greater than 19 2 kb...

Страница 116: ...Appendix D Glossary D 12 OSU 300 User Manual 61200663L1 1...

Страница 117: ...ngs 3 6 auth failure traps 3 15 auxiliary port 1 3 B bad boot sector 3 18 bad checksum 3 18 bad RAM address 3 18 bad RAM data 3 18 bandwidth profiles 3 10 BERT 2 11 3 7 6 1 6 12 6 13 pattern 6 12 test...

Страница 118: ...ck 6 4 remote payload loopback with BERT test 6 7 remote port payload loopback test 6 7 Quad DSX 1 6 1 6 4 6 7 DS3 6 1 diagnostics 6 2 interface 2 7 network 3 1 3 2 payload loopback 6 3 payload loopba...

Страница 119: ...1 5 interface type 3 5 4 4 invert pattern 6 13 IP 3 12 IP address trap 3 13 IP hosts 3 16 IP security 3 16 L LA 4 6 LAN 1 3 2 4 2 6 pin assignments A 3 LB 4 6 LC 4 6 LCV 5 6 leads 4 4 LEDs alarm 2 12...

Страница 120: ...oint multiport application 7 2 POP 7 4 port bandwidth 3 5 port state 3 5 port status 4 4 power up AC version 2 8 DC version 2 8 PPP 1 1 1 2 3 1 3 11 3 12 B 2 product service vi product warranty v prof...

Страница 121: ...2 13 TDM 1 1 technical support vi TELNET 1 1 1 2 1 4 2 6 2 12 3 11 3 16 B 2 terminal interface 3 1 terminal timeout 3 16 test patterns 6 12 testing 2 11 time setting 3 17 timed profiles 3 3 3 10 TM 4...

Страница 122: ...Index Index 6 OSU 300 User Manual 61200663L1 1...

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