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          您现在的位置:国产精品视频二区不卡,中文字幕无线在线视频观看,亚洲av久播在线观看,手机看片av永久免费 > 交换传输电信数据测试 > PCM信道/PCM音频/PC复用 > PCM-4 pcm-5 电信一致性分析仪TCA8200 PCM通道分析仪
           

           PCM-4 PCM通道分析仪  电信一致性分析仪TCA-8200  话路分析仪    (全新/二手)现货提供,维修,出租! 

              PCM-4 资料-普真仪器.pdf




            
            
                  PCM-4是基准测量仪,是电信一致性分析仪,它可用来确定模拟级和数字级之间的特性(&ldquo;半性道”测量),而且速度和精度很高。仪表含有内置的自检和样准例行程序,以便处理传输和交换中使用的数字系统对测试和测量设备提出的需。 

          *形成自动测试序列的设置链接

          *A-A,A-D,D-A,D-D测量(“半信道”和“全信道”测量)

          *进行数字信号处理,以提高读和精度

          *针对特定应用的容差模块的图形显示

          *可达18KHZ的带外测量 

                “半信道测量PCM-4可以在PCM复用设备和数字交换模块的模拟级和数字级间进行各种各样的测量,由于仪表也可进行D-D测量,所以还能测试复用转换器。为了测量单个模块。例如编解码器,所有需要的测试能力都可通过64Kbit/s接口来获得。

                 操作简便并直接分析结果   这些仪表,不管是通过IEC 625/IEEE 488直接遥控的,还是人工操作的都很容易使用。内置屏幕通过菜单设置测量并用来显示结果。结果可按表格、图形或直方图形式显示。测量方式和参数用触摸键来选择。为一些通常应用进行预设置有助于加快仪表操作的速度。可以将最多40种设置链接在一起,以组成一个测试序列。使用者可建立自动测试过程,以便用此方式满足自己的特定要求。

                PCM-4作为自动测量系统  利用PCM-4时无需手动进行例行测量;当仪器用作系统控制器(SC)时,便直接对所需求的测量顺序进行程控。

          -—通过简单地将多达40种设置链接在一起,对测量序列进行用户专有的编程。

          -—可确定每种设置的信道测量项目,如每个信道的频响测量。

          -—全自动测量系列,无需外部控制器。PCM-4对MU-30测试点扫描器进行控制,并在适合的打印机上记录测量结果。利用LabWindows® 驱动程序很容易将PCM-5和MU-30组成LabWindows软件开发平台。LabWindows特适合于研究开发工作、生产测试和校准。简单按一下鼠标器,便足以用配备的仪器驱动程序设定PCM-4。一旦命令被复制,测量序列便组合到应用程序中。

                  仪器尺寸重量: 477*244*425mm 25kg 
           

          The PCM-4 PCM Channel Measuring Set can handle practically all PCM multiplexer measurements, and also measurements on the constituent subassemblies of digital exchanges. Transmultiplexer measurements are also possible because investigations between digital 

          If nothing to hte contrary is stated,the values given below are vaiid for all operating conditions and device settings within the rated rated ranges of use for a.c.livevoltage,a.c.line frequency and ambient temperature
          Analog generator
          Generator output
          BN984/01;984/51 balanced,floating,3-pin CF connector
          BN984/02;984/52 balanced,fem.connector compatible with WECO310
          BN984/05;984/55 balanced,fem.connectorcompatible with 1212 APS
          Output impedance,switch-selectalbe 600,850,900Ω and complex
          Permissible d.c.voltage to earth ≤60V
          Send signals
          Sinusoidal signals
          Frequency range 20Hz to 72kHz
          Group-delay measuring signal(PCM-4 only)
          Similar to the measuring signal described in ITU-URec.O.81 and IEEE Standards
          Measuring frequencies 292,500,604,1000,1792,2604,2792 and 3396Hz
          Modulation frequency selectable 41.66 or 83.33Hz
          4-tone signal Four equal level tones at 857,862,1373 and 1388Hz
          Send levels
          Display of power levels (dBm0),can be switched over to voltage levels(dB0)
          Relative level
          Level entry in steps of 0.001dB from -19.9 to +9.9dBr
          Displayed on screen in steps of 0.1dB
          Levels relative to 1mW at a point of 0 rel.level
          Level entry in steps of 0.01dB
          Level range in the preferred range
          for relative level -17 to +3dBr,at 600Ω
          for noise(.50 to 550Hz),at least -60.0 to +2.0 dBm
          for sine signals(f≧200Hz),at least -60.0 to +10.0 dBm
          for all other signals,at least -30.0 to +2.0 dBm
          Analog receiver
          Receiver input see"analog generator output"
          Additional input impedance ≧30kΩ
          Two-wire input and output
          The tow-wire connector can be terminated with a complex impedancefor transhybrid loss measurements
          Receive levels
          Calibratin. see "analog generator"
          Relative levels, see"analog generator"
          Levels relative to 1mW at a pontof 0 rel.level
          Level range in the preferred range of the relative level-9.9to +9.9dBr and at 600Ω
          signal level measurements,at least -60.0 to +10.0 dBm
          noise and crosstalk measurements,at lease -80.0 to 0 dBm
          Receive filters
          Wideband filters passband range Narrow-band filters passband at :
          200Hz to 4kHz
          20Hz to 4kHz
          330Hz to 3100Hz
          20Hz to 72kHz
          4.6kHz to 128kHz(PCM-4only)
          301Hz
          813Hz
          1014Hz
          3343Hz
          350bis 550Hz
          Filters for weighted nose measurements
          Psophometer filter(ITU-T Rec.P.53/O.41)
          C-message weighting filter to North American standsrds 3kHz flat filter to North Amarican standards
          Psophometer filter with 2kHz notch-filter
          C-message weighting filter with 2kHz notch-filtr
          Bandpass 300 to 3350Hz,with 2kHz notch-filter
          Digital signal generator
          PCM frame structure
          BN 984/01 and BN 984/51
          32 channel PCM frames containing:
          30 telephone channels to ITU-T Rec.G.704 Para.3.3
          or 31 telephone channels time slots 1 to 31
          or 32 telephone channels all time slots
          BN984/02,BN 984/52,BN 984/05 and BN 984/55
          Selectable between T1"norm"12FRM/MFRM to ITU-T G.704
          Para.3.1and T1"extd."24 FRM/MFRM to ITU-T G.704 Para.3.1
          Telephone channels per frame 24
          Channel sequences D3/D4,D2 or D1D
          Signalling
          μ-law CCIS or CAS(75/6)
          A-law CCIS
          Generator outputs
          BN 984/01 and BN 984/51
          Interface characteristics comply with ITU-TRec.G703
          Line codes NRZ,AMIand HDB3
          Coaxial output Versacon9 Universal Connector
          System,adaptable to all common connectors
          Output impedance 75Ω
          Balanced output 3ploe,CF connector
          Output impedance 120Ω
          BN984/02,BN 984/52,BN 984/05 and BN 984/55
          Interface characteristics comply withITU-T Rec.G703 and North American standards
          Line codes AMI and B8ZS
          Output pulse characteristic to AT&T
          Technical Advisory No.34
          W-bit insertion ON or OFF
          Balanced output fem.connectro compatible with WECO310(BN 984/02 and984/52)1214APS(BN 984/05and 984/555)
          Output impedance 100Ω
          Operation and clock supply
          Loop-through operation
          A test pattern is injected into onetime slot of a PCM frame which has been looped through the PCM-4
          BN984/01 and BN 984/51
          Generator operation
          from internal clock 2048kHz±25*10-6
          or external clock 2048kHz±100*10-6
          or external 8 kHz sync-signal 8kHz ±100*10-6 or clock derived from receiver signal
          Digital loops
          2Mbit/s loop: all time slots are switched through
          2Mbit/s loop: selected time slots can be switched through (independent selection of the receive and send channel is possible)
          64 kbit/s loop: at relevant interfaces(Option)
          BN984/02,BN 984/52,BN 984/05 and BN 984/55
          Generator operation
          from internal operation 1544±25*10-6
          orexternal clock 1544±100*10-6
          orexternal 8kHz sync.signal 8kHz±100*10-6 or clock derived from receiver signal
          Digital loops
          1.5Mbit/s loop: all timeslots are switched through
          1.5Mbit/s loop: selected time slots can be swithced through (inedependent selection of the receive and send channel is possible)
          64kbit/sloop: at relevant interfaces(Option)
          Digital words for telephone channels
          BN 984/01 and BN 984/51
          Injection of a digital signal in one of the telphone channels 1 to 30(or 31,32)or in all telephone channels,or in all telphone channels except the selected channel.
          Encodinglaw,selectable A-law ro μ-law
          BN984/02,BN 984/52,BN 984/05 and BN 984/55
          Injection of a digital signal in one of the telephone channels 1 to 24,or in all telephone channels,or in all telephone channels except the selected channel.
          Encoding law,selectable A-law or μ-law
          Send signals
          Sine signals
          Frequency range 20Hzto 3.99kHz
          Send level rage(in stepsof 0.1dB) -60.0 to +7.5 dBm
          Noise signals
          Pseudorandom noise signal
          350Hzto 550Hz complies with 300 to 3400Hz
          Send level range(0.1dB steps) -65.0 to 0.0 dBm
          Wideband noise signal for telephone channels
          Noise band 300 to 3400Hz
          Send level range -65.0 to 0.0 dBm
          Conventional telephone signal complies with ITU-T Rec.G.227
          Send level range -30.0 to 0.0 dBm
          Echo return loss and singing return loss signals to North American standards
          Noiseband of ERL-signal 560 to 1965Hz
          Noiseband of SRL-signal 260 to 500Hz
          Noiseband of SRLH-signal 2200 to 3400Hz
          Send level range -30.0 to 0.0 dBm
          Group delay measuring signal
          See: "Analog generator signals"
          Send level range -30.0 to 0.0 dBm
          4-tone signal
          See: "Analog generator signals"
          Send level range -30.0 to 0.0 dBm
          Idle channel signals
          Anyfixed word can be selected.It is also possible to select words which vary randomlyor periodically between two neighbouing values
          Bit patterns
          The following are available for bit error measurements:
          Pseudorandom sequence complying
          with ITU-TRec.V.52 29-1 bits long
          Pseudorandom sequence complying
          with ITU-T Rec.0.152 211-1 bits long
          User-programmable 8 bit word
          External analog signal(via VAR.MODE)
          An external analog signal can be input via an internal PCM coder and injicted in one telephone channel oroutput via 64kbit/s interface
          Test facilities and error insertion
          BN 984/01 and BN 984/81
          AIS transmission (continuous sequence of "1"s)
          Frame alignment bit error ratio 10-3 or 10-4
          Frame alignment word errors 2 or 3 in 4
          Multiframe alignment errors of 1 or 2 in 2
          CRC-4 error ate settable in steps of 0.1%
          inthe range 0.1 to 99.9% based on 1s(1000 CRC-4 words)
          BN984/02,984/52,984/005 and BN 984/55
          ALL ONES transmission
          Bit 2 alarm transmission
          Bit 2 is set to "0" in each channel
          S-bit alarm (T1"norm") transmission
          S-bit in frame 12 is set to "1" m bit alarm (T1"extd") transmission
          Eight"0"-bit salternating with eight"1"-bits
          FAS errors 1in 6 bits or 2 in 4 bits
          S-bit/MFAS errors 1 or 2 in 6bits
          CRC-6 error rate settalbe in steps of 0.3%
          inthe range 0.3 to 99.7% based on 999 ms(333 multiframes)
          Signalling facilities
          BN 984/01 and BN 984/51
          Static signalling bits
          Transmission of signalling bits a b c d in time slot 16 for selected and unoccupied telphone channels
          Signalling byt value settable via menu
          Dynamic signalling bits
          Signalling bit value for selected telephone channel set externally via aus.parallel input
          BN984/02,BN 9848/52,BN 984/05 and BN 984/55
          Static signalling bits
          Transmission of signalling bits A, B/A,B,D,D for selected and unoccupied telephone channels
          Singanlling bit value settable via menu
          Dynamic signalling bits
          Signaling bit value for selected telephon channel set exgernally via aux.parallel input for CAS(75/6)only,orS/m bit value set externally via contradirectional 4 kbit/s input
          Digital signal receiver
          PCM frame struture see "digital signal generator"
          Receiver inputs
          BN 984/01 and BN 984/51
          Interface characteristis comply with ITU-TRec.G.703
          Line code NRZ,AMIand HDB3
          Coaxial input 75Ω or>3kΩ
          Balanced input 12Ωor >3kΩ
          Input signal monitoring via LEDs: NO SIGNAL,AIS ,NO FRAME,NO MULTIRRAME
          BN984/02,BN 984/52,BN 984/05 and BN 984/55
          Interface characteristics comply with ITU-T Rec.G.703 and North American standards.
          Linecodes AMI and B8ZS
          Balancedinput fem.connector compatible with WECO 310(BN 984/02,984/52);1214APS(BN684/05,984/55)
          Input impedance 100Ωor >3kΩ
          Input signal monitoring via LEDs: NO SIGNAL,ALL ONES,NO SYNC,REMOTE ALARM
          Evalution of digital word in telephone channels
          BN 984/01 and BN 984/51
          Selectinga telphone channel
          A code word from one telephone channel 1 to 30(or 31,32)canbe evaluated.
          Code word measurements
          Encoding law,selectable A-law or μ-law
          Receive level range,at least -80 to +6 dBm
          BN984/02,BN 84/52,BN 984/05 and BN 984/55
          Selecting a telephone channel
          Acode word from one telephone channel 1 to 24 can be evaluated
          Code word measurements
          Encoding law, selectable A-law or μ-law
          Receive level range ,at least -80 to +6 dBm
          Receive filters see"Analog receive "
          Bit error measurements
          on telephone channels(64 kbit/s).Shown as a histogram with the X axis representing measuring perides or channels.
          Bit pattern: see"digital signal generagor send signals"
          Error conutson FAS/MFAS and CRC-signals
          Signalling distortion measurements(option;PCM-4 only)
          Method:
          Measure the duty cycle deviation of a rectangular signal
          Generator
          Frequency setting 10Hz or 20Hz
          Duty cycle settable in step
          Analog output(back panel)
          Output impedance,mark <30Ω
          space >20kΩ
          Max.switching voltage 200mA
          Max.switching voltage 70V
          Signalling receiver Measuring range ±10ms
          Resolution 0.1ms
          Analog input(back panel)Input impedance (connected internally to -15V) 750Ω
          Shor-circuit current 10mA
          Evaluation and monitoring of words and bits
          BN 984/01 and BN 984/51
          Monitor ing via8 LEDs(bits 1 to 8)
          Codewords of selected channel,FAS,NOT RAS,MFAS NOT MFAS Signalling bits a b c d (TX and RX)
          Evalution on screen (MODEB91)
          Codewords of selected channel,FAS,NOT FAS,MFAS,NOT MFAS,Signalling bits a b c d(RX)
          BN984/02,BN 984/52,BN 984/05 and BN 984/55
          Monitoring via 8 LEDs(bits 1 to 8)
          Codewords of selected channel,FAS or MFAS,S bits,
          Signalling bits ,B/A,B,C,D
          Auxiliary outputs (back panel)
          Activation signal for crosstalk measurements
          Analog decoder output for decoded signal of selected telephone channel
          Signalling output
          Error and alarm outputs
          Video signal output

          订货信息

           

          PCM Channel Measuring Set PCM-4
          2048 kbit/s version,menu in English BN 984/01
          1544k bit/s version,menu in English,WECO connectors BN 984/02

          2048 kbit/s version,menu in German

          BN 984/03
          1544 kbit/s version,menu in English,1214 APS connectors BN 984/05
          2048 kbit/s version,menu in Spanish BN 984/06
          PCM Channel Measuring Set PCM-5
          2048 kbit/s version,menuin English BN 984/51
          1544 kbit/s version,menu in English,WECO connectors BN 984/52
          2048 kbit/s version,menu in German BN 984/53
          1544 kbit/s version,menu in English,1214 APS connectors BN 984/55
          Options Interfaces:
          Codirectional 64 kbit/s input BN 984/00.01
          Codirectional 64 kbit/s output
          Electrical characteristics to ITU-T G.703
          BN 984/00.02
          Contradirectional 64kbit/s input BN 984/00.03
          Contradirektionaler64 kbit/s output
          Electrical characteristics to ITU-T G.703
          BN 984/00.04
          Serial 64 kbit/s TTLinput BN 984/00.05
          Serial 64 kbit/sTTL output
          Co-or contra directional,depending on mode
          BN 984/00.06
          Parallel 64 kbit/s TTLinput BN 984/00.07
          Parallel 64kbit/s TTL output
          Parallel 8 bit input/output with 8kHz clock signal
          BN 984/00.08
          64 kbit/s V.11 interface
          for measurement of signalling distortion and interference from signalling
          BN 984/00.09
          IEEE 488/IEC 625 Interface
          with IEEE488 connector and K420 connecting calbe
          BN 984/00.09
          Analog signalling interface for measurement of signalling distortion and interference from signlling BN 984/00.19
          IEEE488/IEC 625 Interface with IEEE 488 connector and K 420 connecting calbe BN 958/24
          Bridges:
          Reurn Loss and Longitudinal Conversion
          Transfer Loss Bridge
          600Ω/900Ω/CPLX (PCM-4 only) BN 984/00.0
          600Ω/900Ω/CPLX (PCM-4 only) BN 984/00.11
          Impedance modification (replaces 850Ω or 900Ω and CPLX) BN 984/00.32
          Bridge impedance addition:
          Up to 4 additional customer specific CPLX impedances canbe added to the bridge;selection lnly via IEC/IEEE interface
          BN 984/00.16
          12 kHz low pass filter (for out-of-band noise suppressin) BN 984/00.14
          Software retrofitted to the latest status for  
          PCM-4BN 984/01 BN 984/00.41
          PCM-4BN 984/02 and BN 984/05 BN 984/00.42
          PCM-4BN 984/03 BN 984/00.43
          Specify actual software version and serial no.when ordering
          User specified modifications
          A detailed specification sheet is available for enteringthe values required
          Analog generator/receiverimpedance modifications
          (replacces 850Ω/900Ω and CPLX)
          BN 984/00.31
          Analong generator output impedance modified to Zou≈0Ω
          in place of complex impedance
          BN 984/00.34
          Impedance modification (replaces 850Ω or 900Ω and CPLX) BN 984/00.32
          1wire terminaltion modification(replaces 910Ω||39nF)
          (selected with PARAM 914,D-Dmode)
          BN 984/00.33
          Tolerance masks programmed to user specifications BN 984/00.35
          Instruments are equipped with ITU-T tolerance masks as standard
          Forms for entering toperance mask changes are included in Appendix D of the operating manual
          Accessories
          LabWindow®Driver (for PCM-4/5 and MU-30)
          for integrationin automatic test systems for development,production and service/calibration
          BN 984/95.99
          TestPoint Scanner MU-30 (with Interface Card)
          Balanced through 0 switching of 10,24 or 30 VF channel in TX and RX directions
          BN 823/11
          WG PenBERT mini PCM monitor(E1)
          (see WG PenBERT data sheet for details)
          BN 4555/11
          D.C.Loop Holding Circuit GH-1 (with capacitor-coupled output) BN 984/00.12
          1.5m connecting calbe: CF(male) to 1214 APS(male) K348
          1.0m connecting cable: CF(male) to 1214 APS (male) K438
          D.C.Decouplingfor analog inputs and outputs,PCMZ-4 for use with BN 984/01,BN 984/51,BN 984/03and BN 984/53 only.
          (Not required if (GH-1 is used)
          BN 984/00.13
          IEEE488 Adapter(m-m) for Interface card S832
          Front and Back Panel Covers SD-5(1 set) BN 700/00.25
          19" conversion kty BN 700/00.05 


           

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