CN201069873Y - Test unit for built-in asymmetric digital user line - Google Patents
Test unit for built-in asymmetric digital user line Download PDFInfo
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- CN201069873Y CN201069873Y CNU2007200690816U CN200720069081U CN201069873Y CN 201069873 Y CN201069873 Y CN 201069873Y CN U2007200690816 U CNU2007200690816 U CN U2007200690816U CN 200720069081 U CN200720069081 U CN 200720069081U CN 201069873 Y CN201069873 Y CN 201069873Y
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Abstract
The utility model relates to an embedded asymmetric digital user line test unit, which comprises a power pack module, an embedded system module, a programmable logic module, a test access matrix module, a voltage, resistance and capacitance test module, a time domain and frequency domain test module, an ADSL local side simulation or interactive test module, and an ADSL user side simulation or integrated services digital network simulation module. The utility model adopts test units with modularized structure, and facilitates function configuration testing on line nodes with different user capacity, different line type combinations and different types of transmission equipment, so as to more reasonably meet the requirements on ADSL line release and number allocation test and operational maintenance test, thereby effectively improving technical maturity and operational reliability and reducing unnecessary repeated cost.
Description
Technical field
The utility model relates to a kind of embedded Asymmetric Digital Subscriber Loop (ADSL) test cell (EATU), go up enforcement for the landline telephone network operation business in Asymmetric Digital Subscriber Loop (ADSL) (ADSL) and open the business of distributing telephone numbers with operation maintenance, necessary testing tool is provided, belongs to communication technical field.
Background technology
Along with the extensive use in the fixed-line telephone network at home of ADSL technology, user capacity is expanded rapidly, the distribute telephone numbers workload of test and operation maintenance test of line clear sharply increases, and the effective means of testing of needs is to the electric property of subscriber's line with running status is tested and analysis and evaluation.The competition in the market of communication service simultaneously is also in continuous aggravation, and operator not only will improve service quality, and will reduce operating cost.Therefore require testing apparatus multiple functional, reliable, economical and practical, easy for installation.
There is following problem in existing same device: at first various in style, and function singleness, the system integration is difficulty comparatively, and the networking testing efficiency is low.Secondly, resistance capacitance voltage tester basic function repeats to be provided with, and causes the wasting of resources.The 3rd, the composition system is comparatively complicated, and structural volume is huge, and the occupied ground space is bigger, and little office point can't be installed.Therefore, in being applied to the integrated test system solution of ADSL the whole network, existing same device is difficult to promote the use of.
The utility model content
The purpose of this utility model provides a kind of embedded Asymmetric Digital Subscriber Loop (ADSL) test cell EATU, can satisfy the needs that Asymmetric Digital Subscriber Loop (ADSL) ADSL the whole network is realized distributing telephone numbers line clear test and operation maintenance tested.
For realizing above purpose, the technical solution of the utility model provides a kind of embedded Asymmetric Digital Subscriber Loop (ADSL) test cell, it is characterized in that, hold test module, time-domain and frequency-domain test module, the emulation of ADSL local side or interactive testing module, the emulation of ADSL user side or integrated services digital network emulation module and form by power pack module, embedded system module, programmed logical module, test access matrix, pressure drag.Test access matrix module respectively with programmed logical module, pressure drag holds test module, the time-domain and frequency-domain test module, emulation of ADSL local side or interactive testing module, emulation of ADSL user side or integrated services digital network emulation module are connected with test bus, programmed logical module respectively with the embedded system module, pressure drag holds test module, the time-domain and frequency-domain test module, emulation of ADSL local side or interactive testing module connect, the embedded system module respectively with emulation of ADSL user side or integrated services digital network emulation module, network interface is connected with serial ports, the power pack module respectively with the embedded system module, programmed logical module, emulation of ADSL local side or interactive testing module, pressure drag holds test module and is connected with emulation of ADSL user side or integrated services digital network emulation module.
A kind of embedded Asymmetric Digital Subscriber Loop (ADSL) test cell is characterized in that, is made up of narrowband test unit and Broadband Test Unit two parts, and the embedded system module of narrowband test unit is connected with the embedded system module of Broadband Test Unit,
Described narrowband test unit comprises power pack, embedded system, FPGA (Field Programmable Gate Array), the test access matrix, pressure drag holds test, the time-domain and frequency-domain test, interactive testing, eight modules of integrated services digital network emulation are formed, test access matrix module respectively with programmed logical module, pressure drag holds test module, the time-domain and frequency-domain test module, the interactive testing module is connected with the integrated service digital module, programmed logical module respectively with the embedded system module, pressure drag holds test module, the time-domain and frequency-domain test module is connected with the interactive testing module, and test inserts and is connected to PSTN narrowband test bus;
Described Broadband Test Unit comprises power pack, embedded system, FPGA (Field Programmable Gate Array), the test access matrix, pressure drag holds test, the time-domain and frequency-domain test, the emulation of ADSL local side, eight modules of ADSL user side emulation are formed, programmed logical module respectively with the embedded system module, test access matrix module, pressure drag holds test module, the time-domain and frequency-domain test module is connected with ADSL local side emulation module, test access matrix module is held test module with pressure drag respectively, the time-domain and frequency-domain test module, ADSL user side emulation module is connected with ADSL local side emulation module, and test inserts and is connected to ADSL broadband test bus.
The utility model adopts modular construction, wherein, power pack, embedded system, three modules of FPGA (Field Programmable Gate Array) are basic circuit, and test access matrix, pressure drag hold test, time-domain and frequency-domain test, the emulation of ADSL local side or interactive testing, the emulation of ADSL user side or five modules of integrated services digital network emulation test function circuit for matching.The combination of selection of A SL local side emulation module and user side emulation module generally is used for adsl line operation maintenance test.The combination of apolegamy interactive testing module and integrated services digital network emulation module generally is used for adsl line and opens the test of distributing telephone numbers, or common speech line test in the gauze.
Adopt the EATU of modular construction, on the line node of different user capacity, the combination of different circuit types, different type of machines transmission equipment, can carry out the test function configuration easily, more reasonably satisfy the adsl line of various structures and open distribute telephone numbers test and operation maintenance test, effectively improved the testing efficiency of system, improve resource utilization, reduced installing space.Adopt unified test function module, also help the hardware circuit of raising device and the technology maturity of software program, improve system's operational reliability.
The utility model can be configured to Broadband Test Unit and narrowband test unit on the fixed network node of broadband A SL and narrowband voice joint line, configuration quantity is selected according to practical application request.
The utility model is on the far-end DSLAM of middle and small scale module office node, can be configured to DSLAM built-in testing integrated circuit board, comprise that embedded system, FPGA (Field Programmable Gate Array), pressure drag hold test, time-domain and frequency-domain test, five modules of ADSL user side emulation, various working powers are provided by the DSLAM separator frame, directly link the integrated circuit board test bus after line is grabbed in the control of DSLAM separator test matrix, test cell does not dispose the local side emulation module.Test cell is configured to DSLAM built-in testing integrated circuit board, can satisfy the testing requirement of the far-end DSLAM module office high-performance and low-cost of middle and small scale.
The utility model has the advantages that the test cell that adopts modular construction, on the line node of different user capacity, the combination of different circuit types, different type of machines transmission equipment, can carry out the test function configuration easily, more reasonably satisfy adsl line and open distribute telephone numbers test and operation maintenance test, effectively improve technology maturity and operational reliability, reduced unnecessary repetition cost.
Description of drawings
Fig. 1 is an EATU circuit structure block diagram;
Fig. 2 is the power pack modular circuit structured flowchart among the EATU;
Fig. 3 is the embedded system modular circuit structured flowchart among the EATU;
Fig. 4 is the programmed logical module circuit structure block diagram among the EATU;
Fig. 5 is the test access matrix modular circuit structured flowchart among the EATU;
Fig. 6 is that the pressure drag among the EATU holds test module circuit structure block diagram;
Fig. 7 is the time-domain and frequency-domain test module circuit structure block diagram among the EATU;
Fig. 8 is the ADSL local side emulation testing modular circuit structured flowchart among the EATU;
Fig. 9 is the ADSL user side emulation testing modular circuit structured flowchart among the EATU;
Figure 10 is the interactive testing modular circuit structured flowchart among the EATU;
Figure 11 is an integrated services digital network emulation module circuit structure block diagram among the EATU;
Figure 12 is applied to the configuration schematic diagram of broadband and arrowband joint line testing equipment for EATU;
Figure 13 is applied to the configuration schematic diagram of DSLAM built-in testing integrated circuit board for EATU;
Embodiment
Below to adopting embedded Asymmetric Digital Subscriber Loop (ADSL) test cell of the present utility model to describe in further detail; but present embodiment is not limited to the utility model; every employing analog structure of the present utility model, similarity method and similar variation thereof all should be listed protection range of the present utility model in.
Embodiment 1:
As shown in Figure 1, be embedded Asymmetric Digital Subscriber Loop (ADSL) test cell circuit structured flowchart, described embedded Asymmetric Digital Subscriber Loop (ADSL) test cell is held test module, time-domain and frequency-domain test module, the emulation of ADSL local side or interactive testing module, the emulation of ADSL user side or integrated services digital network emulation module and is formed by power pack module, embedded system module, programmed logical module, test access matrix module, pressure drag.Test access matrix module respectively with programmed logical module, pressure drag holds test module, the time-domain and frequency-domain test module, emulation of ADSL local side or interactive testing module, emulation of ADSL user side or integrated services digital network emulation module are connected with test bus, programmed logical module respectively with the embedded system module, pressure drag holds test module, the time-domain and frequency-domain test module, emulation of ADSL local side or interactive testing module connect, the embedded system module respectively with emulation of ADSL user side or integrated services digital network emulation module, network interface is connected with serial ports, the power pack module respectively with the embedded system module, programmed logical module, emulation of ADSL local side or interactive testing module, pressure drag holds test module and is connected with emulation of ADSL user side or integrated services digital network emulation module.The combination of selection of A SL local side emulation module and ADSL user side emulation module generally is used for adsl line operation maintenance test.The combination of apolegamy interactive testing module and integrated services digital network emulation module generally is used for adsl line and opens the test of distributing telephone numbers, or common speech line test in the gauze.
Adopt the EATU of modular construction, on the line node of different user capacity, the combination of different circuit types, different type of machines transmission equipment, can carry out the test function configuration easily, more reasonably satisfy the adsl line of various structures and open distribute telephone numbers test and operation maintenance test, effectively improved the testing efficiency of system, improve resource utilization, reduced installing space.Adopt unified test function module, also help the hardware circuit of raising device and the technology maturity of software program, improve system's operational reliability.
Described power pack modular circuit structure as shown in Figure 2, comprising main power source, rectifying tube, low-tension supply, analog power, reference power supply, high voltage source.Main power source adopts the NFC25-48T05-12J-25W switching power circuit, input-48V, and output+5V and ± 12V ,+5V is used for the digital circuit main power source, and ± 12V is used for the power supply of conventional simulation circuit.Rectifying tube adopts 1N5401, input+5V, output pact+4V is used for the relay control coil power supply, when rectifying tube can disconnecting relay moves the overshoot of generation right+influence of 5V power supply.Low-tension supply adopts AMS1084CM-3.3, AMS1084CM-1.5 and TPS767D325, input+5V, and three kinds of voltages of output 3.3V/2.5V/1.5V are respectively applied for to embedded system, FPGA (Field Programmable Gate Array) core power and peripheral interface power supply are provided.Analog power adopts the CXA10-48D05-10W switching power circuit, input-48V, and output ± 5V is used for the power supply of the analog circuit of low-voltage.Reference power supply adopts the ZXDG12S4848-12W switching power circuit, input-48V, and output+48V is used for the voltage reference that resistance capacitance is tested.High voltage source adopts the HKS030Z96-10W switching power circuit, input-48V, and output high pressure-96V is used for the S mouth drive power supply on the integrated services digital network emulation module.
Described embedded system modular circuit structure is made up of central processing unit, dynamic random access memory, flash memory, expansion interface, network interface and serial line interface as shown in Figure 3.Central processing unit connects serial line interface, connects dynamic random access memory, flash memory, expansion interface and network interface by the data address control bus.Be linked to the testing server in the integrated test system on the network interface of embedded system, expansion interface goes to be connected to programmed logical module, and serial line interface is as the alternate channel of debugging interface and instruction and transfer of data.The central processing unit of embedded system adopts 16/32 risc microcontroller ARM7 family chip S3C44B0X, dynamic random access memory adopts the dram chip HY57V561620CT-H of 4 * 4M-Word capacity, flash memory adopts the chip E28F128J3C150 of 128M-Word capacity, expansion interface adopts chip SN74LVTH16245A, adopt 2 10MHz/100MHz Ethernet control and treatment chip DM9000E to form the binary channels network interface, serial line interface adopts chip MAX202.
Described programmed logical module circuit module structure is made up of programmable logic chip, series arrangement memory, crystal oscillator, static memory, latch and relay driver as shown in Figure 4.Programmable logic chip is connected with series arrangement memory, crystal oscillator, static memory, latch respectively, and latch connects relay driver again.Programmable logic chip is expanded every function in order to control logic, timer counter, the interface of realizing EATU, its 33 programmable pins are used to connect the expansion interface of embedded system module, and 75 programmable pins are used to connect the input/output signal of each test module.The output of relay driver can drive 56 relays simultaneously.The series arrangement memory is used for the power down storage and the configuration logic firmware program that powers on, and static memory is used for the buffer memory of high-speed data acquisition, and the crystal oscillator chip is used to provide the benchmark of test frequency.Programmable logic chip adopts PPGA chip EP1C6Q240, series arrangement memory chip employing capacity is the EPCS1 of 1M-Bits, the crystal oscillator chip adopts 35.328MHz-3V3, static memory employing capacity is the IS61LV6416A of 64K-Word, latch adopts 7 74HC273, and driver adopts 8 MC1413.
Described test access matrix modular circuit structure as shown in Figure 5, form by 10 relay R L111, RL112, RL121, RL122, RL131, RL132, RL211, RL212, RL221, RL231 and 1 low pass filter, be used for the EATU test and grab line traffic control, finish test jointing, circuit bypass, circuit bridging, circuit articulating and internal and external line business and renew every function.Test access matrix module is 6 inputs, 2 outputs, input port connects the interior and exterior lines test of exchange transmission equipment A, B, C respectively and grabs the line input, output port Internal Line Test output is connected to pressure drag and holds test, the emulation of ADSL user side, interactive testing, integrated services digital network emulation module, and the output of output port Loop test is connected to pressure drag and holds test, time-domain and frequency-domain test, the emulation of ADSL local side, interactive testing, integrated services digital network emulation module.Relay adopts AGQ200O03, and low pass filter is made of 3 inductance VT-1069T series connection.
Described pressure drag holds the test module circuit structure as shown in Figure 6, switch by test function, capacity measurement charging sampling, the resistance voltage test signals samples, analog to digital conversion circuit is formed, the resistance that is used for the EATU measurement circuit, electric capacity and voltage parameter, test function is switched, capacity measurement charging sampling, the resistance voltage test signals samples, analog-to-digital conversion four partial circuits are connected with programmed logical module respectively, the test function commutation circuit is connected with resistance voltage test signals samples circuit with capacity measurement charging sampling respectively, resistance voltage test signals samples circuit is connected with the analog-to-digital conversion test circuit, the function commutation circuit is made up of 8 relay AGQ200O03, capacity measurement charging sample circuit is made up of constant current tube DH903C and voltage comparator LM393, resistance voltage test signals samples circuit is by 4 relay AGQ200O03 and 5 sampling resistor 100 Ω, 1K Ω, 10K Ω, 100K Ω, 200K Ω forms, and analog to digital conversion circuit is made up of operational amplifier INA118P and analog to digital converter AD1674.
Described time-domain and frequency-domain test module circuit structure as shown in Figure 7, form by test function switching, impedance matching, amplification filtering, pumping signal driving, analog to digital conversion circuit, be used for EATU test noise power, frequency response, longitudinal balance, Time Domain Reflectometry parameters.Test function is switched, impedance matching, amplification filtering, pumping signal drives, analog-to-digital conversion five partial circuits are connected with programmed logical module respectively, the test function commutation circuit is connected with the pumping signal drive circuit with impedance matching circuit respectively, impedance matching circuit is connected with the analog-to-digital conversion test circuit by the amplification filtering circuit, the function commutation circuit adopts 4 relay AGQ200O03 to form, impedance matching circuit adopts 3 relay AGQ200O03, build-out resistor 100 Ω and 1.47K Ω, 1 isolating transformer B2031 forms, the amplification filtering circuit adopts high input impedance operational amplifier AD8056, the differential operational amplifier AD8139 of stackable biasing, 2 variable gain operational amplifier A D8370, filter LT6600-2.5 is composed in series successively, the pumping signal drive circuit adopts adsl line special driving chip AD8016, and analog to digital conversion circuit adopts differential operational amplifier AD8130 and analog to digital converter ADS805 to form.
Described ADSL local side emulation testing modular circuit structure as shown in Figure 8, form by CO AFE (analog front end), RS memory, low-tension supply, digital signal processor, program storage, data storage, CO analog front circuit RS memory respectively is connected with digital signal processor, and digital signal processor is connected with programmed logical module, low-tension supply, program storage and data storage respectively.By realizing being connected with the modulator-demodulator of user side, the current Line Attenuation of emulation testing down going channel, current noise redundancy, gross output, maximum feasible speed, channel capacity utilization rate, DMT subcarrier are counted parameters than bit loading in EATU.The CO analog front circuit adopts GS3800-808-001, low-tension supply adopts low pressure voltage stabilizing chip AMS184CM1.5 and power supply time schedule controller SMT4214G-273, digital signal processor adopts GS7566-812-002U, program storage employing capacity is the flash memory chip SST39VF40 of 4M-Byte, and RS memory and data storage all employing capacity are 512K-Byte static storage chip CY7C1049CV33.
Described ADSL user side emulation testing modular circuit structure as shown in Figure 9, by the ADSL transceiver, low-tension supply, program storage, data storage, network interface is formed, the ADSL transceiver respectively with low-tension supply, program storage, data storage is connected with network interface, network interface is connected with programmed logical module, in EATU by existing being connected the maximum feasible speed of emulation testing data feedback channel with DSLAM user is firm and hard, channel rate, the channel capacity utilization rate, noise redundancy, power output, the DMT subcarrier is than bit loading number, the circuit error rate, the PING success rate, PPPoE success rate parameters.The ADSL transceiver adopts ADSL-MODEM special chip BCM6338KFB, low-tension supply adopts low pressure voltage stabilizing chip SE8117T33, program storage employing capacity is the flash memory chip MBM29LV160CBTC-70 of 2M-Byte, data storage all employing capacity is 4 * 1M-Word dynamic random storage chip M12L64164A, and network interface circuit adopts TM1702M.
Described interactive testing modular circuit structure as shown in figure 10, form by test function switching, phone feed, ringing current generator, audio generator, DTMF transceiver, microcontroller, microcontroller connects phone feed, ringing current generator, audio generator, DTMF transceiver and test function commutation circuit respectively, and the test function commutation circuit connects phone feed, ringing current generator, audio generator and DTMF transceiver respectively.In EATU, realize ring, phone state, converse, collect the digits, howler tone, the every interactive testing function of howl ring sound.The test function commutation circuit is made up of 6 relay AGQ200O03 and relay driver MC1413, the phone feed circuit adopts constant-current source DH317, ringing current generator adopts PCR06, the audio generator circuit is made up of multiway analog switch MC4051 and 2 operational amplifier LF353, the DTMF transceiver circuit adopts transmitting-receiving chip MT8888C, and microcontroller adopts P89V51RD2.
Described integrated services digital network emulation module as shown in figure 11, interconnected and formed by ISDN-U mouth, power switch, control logic able to programme, microcontroller four partial circuits, whether the user side that is used for isdn line in EATU connects NT, the activation of U mouth, the survey of U choma, the activation of S mouth, the survey of S choma, the every test of transmission error rates.The ISDN-U mouth adopts chip PEB2091V5.2, and power switch adopts chip PEB2026, and control logic able to programme adopts CPLD chip EPM7064, and microcontroller adopts P89V51RD2.
Embodiment 2:
Figure 12 is applied to the configuration schematic diagram of broadband and arrowband joint line testing equipment for EATU, and testing equipment is made up of narrowband test unit and Broadband Test Unit two parts.The narrowband test unit is used for the test of the common voice lines of fixed network and the Pre-Evaluation test that broadband line is distributed telephone numbers preceding.Broadband Test Unit is used for the test of the broadband A SL digital circuit and the ADSL Load Line of fixed network.
Described narrowband test unit comprises power pack, embedded system, FPGA (Field Programmable Gate Array), the test access matrix, pressure drag holds test, the time-domain and frequency-domain test, interactive testing, eight modules of integrated services digital network emulation are formed, test access matrix module respectively with programmed logical module, pressure drag holds test module, the time-domain and frequency-domain test module, the interactive testing module is connected with the integrated service digital module, programmed logical module respectively with the embedded system module, pressure drag holds test module, the time-domain and frequency-domain test module is connected with the interactive testing module, and test inserts and is connected to PSTN narrowband test bus.
Described Broadband Test Unit comprises power pack, embedded system, FPGA (Field Programmable Gate Array), the test access matrix, pressure drag holds test, the time-domain and frequency-domain test, the emulation of ADSL local side, eight modules of ADSL user side emulation are formed, programmed logical module respectively with the embedded system module, test access matrix module, pressure drag holds test module, the time-domain and frequency-domain test module is connected with ADSL local side emulation module, test access matrix module is held test module with pressure drag respectively, the time-domain and frequency-domain test module, ADSL user side emulation module is connected with ADSL local side emulation module, and test inserts and is connected to ADSL broadband test bus.
Testing server is connected to the external network port of narrowband test unit, and testing server is transmitted the external serial ports that is connected to Broadband Test Unit through external serial ports to the control of Broadband Test Unit through the embedded system of narrowband test unit.The configuration quantity of narrowband test unit and Broadband Test Unit can be selected according to practical application request in the testing equipment, when test cell configuration quantity is more, can increase a Multi-netmouth test data forwarding module between testing server and test cell.
Can also dispose the bridge module in the test cell, between fixed network operator's private local area network and Ethernet, realize connecting networking cheaply, make full use of ready-made private network resource, reduce taking common network resource as far as possible.
Embodiment 3:
Figure 13 is applied to the configuration schematic diagram of DSLAM built-in testing integrated circuit board for EATU, and EATU is installed in separator frame with the form of integrated circuit board, be integrated among the transmission equipment DSLAM, the transfer of data of test control by the network first line of a couplet in the DSLAM band to testing server.
Testing equipment is by embedded system, FPGA (Field Programmable Gate Array), pressure drag holds test, the time-domain and frequency-domain test, five modules of ADSL user side emulation are formed, embedded system module and programmed logical module are held test module with pressure drag respectively, the time-domain and frequency-domain test module, network interface 1, network interface 2 is connected with the separator board power supply, the integrated circuit board test interface respectively with ADSL user side emulation module, pressure drag holds test module and is connected with the separator board test matrix with the time-domain and frequency-domain test module, ADSL user side emulation module is connected with network interface 2, network interface 1 is connected with the separator board hub, working power is provided by separator frame, is directly connected to the integrated circuit board test bus after line is grabbed in the control of separator test matrix.Why DSLAM built-in testing integrated circuit board does not have configure ADSL local side emulation module, mainly is in order to reduce cost.The emulation testing of relevant ADSL local side can be analyzed by the link data that DSLAM transmission nest plate is provided, and obtains corresponding test data.
EATU is configured to DSLAM built-in testing integrated circuit board, can satisfy the testing requirement of the high-performance and low-cost of far-end DSLAM module office on a small scale.
Claims (3)
1. embedded Asymmetric Digital Subscriber Loop (ADSL) test cell, it is characterized in that, by the power pack module, the embedded system module, programmed logical module, the test access matrix, pressure drag holds test module, the time-domain and frequency-domain test module, emulation of ADSL local side or interactive testing module, emulation of ADSL user side or integrated services digital network emulation module are formed, test access matrix module respectively with programmed logical module, pressure drag holds test module, the time-domain and frequency-domain test module, emulation of ADSL local side or interactive testing module, emulation of ADSL user side or integrated services digital network emulation module are connected with test bus, programmed logical module respectively with the embedded system module, pressure drag holds test module, the time-domain and frequency-domain test module, emulation of ADSL local side or interactive testing module connect, the embedded system module respectively with emulation of ADSL user side or integrated services digital network emulation module, network interface is connected with serial ports, the power pack module respectively with the embedded system module, programmed logical module, emulation of ADSL local side or interactive testing module, pressure drag holds test module and is connected with emulation of ADSL user side or integrated services digital network emulation module.
2. an embedded Asymmetric Digital Subscriber Loop (ADSL) test cell is characterized in that, is made up of narrowband test unit and Broadband Test Unit two parts, and the embedded system module of narrowband test unit is connected with the embedded system module of Broadband Test Unit,
Described narrowband test unit comprises power pack, embedded system, FPGA (Field Programmable Gate Array), the test access matrix, pressure drag holds test, the time-domain and frequency-domain test, interactive testing, eight modules of integrated services digital network emulation are formed, test access matrix module respectively with programmed logical module, pressure drag holds test module, the time-domain and frequency-domain test module, the interactive testing module is connected with the integrated service digital module, programmed logical module respectively with the embedded system module, pressure drag holds test module, the time-domain and frequency-domain test module is connected with the interactive testing module, and test inserts and is connected to PSTN narrowband test bus;
Described Broadband Test Unit comprises power pack, embedded system, FPGA (Field Programmable Gate Array), the test access matrix, pressure drag holds test, the time-domain and frequency-domain test, the emulation of ADSL local side, eight modules of ADSL user side emulation are formed, programmed logical module respectively with the embedded system module, test access matrix module, pressure drag holds test module, the time-domain and frequency-domain test module is connected with ADSL local side emulation module, test access matrix module is held test module with pressure drag respectively, the time-domain and frequency-domain test module, ADSL user side emulation module is connected with ADSL local side emulation module, and test inserts and is connected to ADSL broadband test bus.
3. embedded Asymmetric Digital Subscriber Loop (ADSL) test cell, it is characterized in that, by embedded system, FPGA (Field Programmable Gate Array), pressure drag holds test, the time-domain and frequency-domain test, five modules of ADSL user side emulation are formed, embedded system module and programmed logical module are held test module with pressure drag respectively, the time-domain and frequency-domain test module, network interface (1), network interface (2) is connected with the separator board power supply, the integrated circuit board test interface respectively with ADSL user side emulation module, pressure drag holds test module and is connected with the separator board test matrix with the time-domain and frequency-domain test module, ADSL user side emulation module is connected with network interface (2), and network interface (1) is connected with the separator board hub.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200690816U CN201069873Y (en) | 2007-04-19 | 2007-04-19 | Test unit for built-in asymmetric digital user line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950265A (en) * | 2010-09-19 | 2011-01-19 | 南京南瑞继保电气有限公司 | Method for CPU board card program downloading and hardware online detection and plug-in connector |
| CN109948306A (en) * | 2019-05-05 | 2019-06-28 | 无锡矽杰微电子有限公司 | Integrated analogue system |
-
2007
- 2007-04-19 CN CNU2007200690816U patent/CN201069873Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950265A (en) * | 2010-09-19 | 2011-01-19 | 南京南瑞继保电气有限公司 | Method for CPU board card program downloading and hardware online detection and plug-in connector |
| CN101950265B (en) * | 2010-09-19 | 2012-11-07 | 广州供电局有限公司 | Method for CPU board card program downloading and hardware online detection and plug-in connector |
| CN109948306A (en) * | 2019-05-05 | 2019-06-28 | 无锡矽杰微电子有限公司 | Integrated analogue system |
| CN109948306B (en) * | 2019-05-05 | 2024-02-02 | 无锡矽杰微电子有限公司 | Integrated simulation system |
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