首页 > 商机 > 通讯产品 > 传输、交换设备 > 交换机 快速发布求购信息【免注册】 | 免费发布商机〖新增产品报价〗
【二手供应】二手PCM信道分析仪 PCM-4 PCM分析仪
- 会员类型：
普通会员
PCM信道分析仪 PCM-
4PCM Channel Measuring Set厂
家：Wandel&Goltermann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，以提高速度和精度针对特定应用的
容差摸板的图形显示可达128kHz的带外
测量PCM-4是基准测量仪，这些仪表可用来确定
模拟级和数字级之间的特性（“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要。
“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...
信息类型 → 二手供应
- 行业类别：
- 通讯产品/传输、交换设备/交换机
- 供应数量：
- 包装说明：
- 价格说明：
- 产品规格：
信息内容
PCM信道分析仪 PCM-
4
PCM Channel Measuring Set
厂 家：Wandel&Goltermann
- 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，以提高速度和精度
- 针对特定应用的 容差摸板的图形显示
- 可达128kHz的带外 测量
PCM-4是基准测量仪，这些仪表可用来确定
模拟级和数字级之间的特性（“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要。
“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。
不同测试情况的理想解决方案
对不同的应用，要求不同的测量方式。
PCM-4可提供所有的方式；PCM-5是基本型仪表，可
选的方式太少。
PCM-4在交 换设备研制开发阶段的运用 《数字交换设备传输 指标测试点滴》 摘 自网络
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
| Ifonthing to hte contrary is stated,the values given below are vaiid for all operatingconditions and device settings within the rated rated ranges of use for a.c.livevoltage,a.c.line frequency and ambient temperature | |
| Analoggenerator | |
| Generator output | |
| BN984/01;984/51 | balanced,floating,3-pin CF connector |
| BN984/02;984/52 | balanced,fem.connector compatible with WECO310 |
| BN 984/05;984/55 | balanced,fem.connectorcompatible with 1212 APS |
| Outputimpedance,switch- selectalbe | 600,850,900Ω and complex |
| Permissibled.c.voltage to earth | ≤ 60V |
| Sendsignals | |
| Sinusoidal signals | |
| Frequencyrange | 20Hz to 72kHz |
| Group-
delaymeasuring signal(PCM-4 only)
Similar to the measuring signal described in ITU-URec.O.81 and IEEE Standards | |
| Measuringfrequencies | 292,500,604,1000,1792,2604,2792
and 3396Hz |
| Modulationfrequency selectable | 41.66 or 83.33Hz |
| 4-tonesignal Four equal level tones at | 857,862,1373 and 1388Hz |
| Sendlevels Display of power levels(dBm0),can be switched over to voltage levels(dB0) Relativelevel | |
| Level entry in steps of0.001dB from | -19.9 to +9.9dBr |
| Displayedon screen in steps of
0.1dB Levels relative to 1mW at a point of 0 rel.level Levelentry in steps of 0.01dB Level range in the preferred range | |
| for relative level | -17 to +3dBr,at 600Ω |
| fornose(.50 to 550Hz),at least | -60.0 to +2.0dBm0 |
| forsine signals(f≧200Hz),at least | -60.0 to +10.0dBm0 |
| forall other signals,at least | -30.0 to +2.0dBm0 |
| Analogreceiver | |
| Receiver input | see"analoggenerator output" |
| Additionalinput impedance | ≧30kΩ |
| Two-wireinput and
output The tow-wire connector can be terminated with a complex impedancefor transhybrid loss measurements | |
| Receivelevels Calibratin.se e "analog generato" Relative levels,see"analoggenerator" | |
| 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 levelmeasurements,at least | -60.0 to +10.0dBm0 |
| noiseand crosstalk measurements,at lease | - 80.0 to 0 dBm0 |
| Receivefilters | |
| Wideband filters passband range | Narrow- bandfilters passband at : |
| 200Hz
to4kHz 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 Psophometerfilter(ITU-T Rec.P.53/O.41) C-message weighting filter to North American standsrds3kHz flat filter to North Amarican standards Psophometer filter with 2kHz notch-filter C-messageweighting filter with 2kHz notch-filtr Bandpass 300 to 3350Hz,with 2 kHz notch-filter | |
| Digitalsignal
generator PCM frame structure BN 984/01 and BN 984/51 32 channelPCM frames containing: | |
| 30 telephone channels | toITU-T Rec.G.704 Para.3.3 |
| or 31telephone channels | time slots 1 to 31 |
| or32 telephone channels | all time slots |
| BN984/02,BN 984/52,BN 984/05 and BN 984/55 | |
| Selectablebetween | 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 |
| Telephonechannels per frame | 24 |
| Channelsequences | D3/D4,D2 or D1D |
| Signalling | |
| μ-law | CCIS or CAS(75/6) |
| A- law | CCIS |
| Generatoroutputs 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 |
| Outputimpedance | 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 | |
| Linecodes | AMI and B8ZS |
| Output pulsecharacteristic | to
AT&T Technical Advisory No.34 |
| W-bitinsertion | ON or OFF |
| Balancedoutput | fem.connectro compatible with WECO310(BN 984/02 and984/52)1214APS(BN 984/05and 984/555) |
| Outputimpedance | 100Ω |
| Operation andclock
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 | |
| frominternal clock | 2048kHz±25*10- 6 |
| orexternal clock | 2048kHz ±100*10- 6 |
| orexternal 8 kHz sync- signal | 8kHz ± 100*10-6 or clockderived from receiver signal |
| Digitalloops | |
| 2Mbit/s loop: | all timeslots are switched through |
| 2Mbit/sloop: | selected time slots can be switched through (independentselection of the receive and send channel is possible) |
| 64 kbit/sloop: | at relevant interfaces(Option) |
| BN984/02,BN 984/52,BN 984/05
and BN 984/55 Generator operation | |
| frominternal operation | 1544±25*10- 6 |
| orexternal clock | 1544 ±100*10- 6 |
| orexternal 8kHz sync.signal | 8kHz ± 100*10-6 or clock derivedfrom receiver signal |
| Digitalloops | |
| 1.5Mbit/s loop: | all timeslots are switched through |
| 1.5Mbit/sloop: | selected time slots can be swithced through (inedependentselection of the receive and send channel is possible) |
| 64kbit/sloop: | at relevant interfaces(Option) |
| Digitalwords for
telephone channels BN 984/01 and BN 984/51 | |
| Injectionof a digital signal in one of the telphone channels 1 to 30(or 31,32)or in alltelephone 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 | |
| Injectionof a digital signal in one of the telephone channels 1 to 24,or in all telephonechannels,or in all telepohe channels except the selected channel. | |
| Encodinglaw,selectable | A-law or μ-law |
| Sendsignals Sine signals | |
| Frequency range | 20Hzto 3.99kHz |
| Send level rage(in stepsof 0.1dB) | -60.0 to +7.5dBm0 |
| Noisesignals Pseudorandom noise signal | |
| 350Hzto 550Hz complies with | 300 to 3400Hz |
| Sendlevel range(0.1dB steps) | -65.0 to 0.0dBm0 |
| Widebandnose sihnal for telpbhone channels | |
| Noise band | 300to 3400Hz |
| Send level range | -65.0to 0.0dBm0 |
| Conventional telephone signal | complieswith ITU- T Rec.G.227 |
| Send levelrange | -30.0 to 0.0dBm0 |
| Echo returnloss 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 |
| Sendlevel range | -30.0 to 0.0dBm0 |
| Groupdelay measuring signal | |
| See: | "Analoggenerator signals" |
| Send levelrange | -30.0 to 0.0dBm0 |
| 4-tonesignal | |
| See: | Analoggenerator signals" |
| Send level range | -30.0to 0.0dBm0 |
| Idle channel
signals Anyfixed word can be silected.It is also possible to select words which vary randomlyor periodically between two neighbouing values | |
| Bitpatterns The following are available for bit error measurements: Pseudorandomsequence complying | |
| with ITU- TRec.V.52 | 29- 1 bits long |
| Pseurdorandomsequence complying | |
| withITU-T Rec.0.152 | 211-1 bits long |
| User-programmable8
bit word External analog signal(via VAR.MODE) An external analog signalcan be input via an internal PCM coder and injicted in one telephone channel oroutput via 64kbit/s interface | |
| Testfacilities and error
insertion BN 984/01 and BN 984/81 AIS transmission(continuous sequence of "1"s) | |
| Frame alignmentbit error ratio | 10-3 or 10- 4 |
| Framealignment word errors | 2 or 3 in 4 |
| Multiframealignment errors of | 1 or 2 in 2 |
| CRC-4error ate settable in steps of | 0.1% |
| inthe range | 0.1 to 99.9% based on 1s(1000CRC-4 words) |
| BN984/02,984/52,984/005 and BN
984/55 ALL ONES transmission Bit 2 alarm transmission Bit2 is set to "0" in each channel Sbit alarm (T1"norm")transmission S-bitin frame 12 is set to "1" m bit alarm(T1"extd") transmission Eight"0"-bitsalternating with eight"1"-bits | |
| FAS errors | 1in 6 bits or 2 in 4 bits |
| S-bit/MFASerrors | 1 or 2 in 6bits |
| CRC- 6error rate settalbe in steps of | 0.3% |
| inthe range | 0.3 to 99.7% based on 999 ms(333 multiframes) |
| Signallingfacilities BN 984/01 and BN 984/51 Static signalling bits Transmissionof signalling bits a b c d in time slot 16 for selected and unoccupied telphonechannels Signalling byt value settable via menu Dynamic signalling bits Signallingbit 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 Transmissionof signalling bits A, B/A,B,D,D for selected and unoccupied telephone channels Singanllingbit value settable via menu Dynamic signalling bits Signaling bit valuefor 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 | |
| Digitalsignal receiver PCM frame struture see "digital signal generator" Receiverinputs 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: | NOSIGNAL,AIS ,NO FRAME,NO MULTIRRAME |
| BN984/02,BN 984/52,BN 984/05
and BN 984/55 Interface characteristics comply withITU-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 monitoringvia LEDs: | NO SIGNAL,ALL ONES,NO SYNC,REMOTE ALARM |
| Evalutionof 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 | |
| Encodinglaw,selectable | A-law or μ-law |
| Receivelevel range,at least | -80 to +6dBm0 |
| 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 | |
| Encodinglaw,selectable | A-law or μ-law |
| Receivelevel range ,at least | -80 to +6 dBm0 |
| Receivefilters see"Analog
receive " Bit error measurements on telep[honechannels(64 kbit/s).Shown as a histogram with the X axis representing measuringperides or channels. | |
| Bit pattern: | see"digitalsignal 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 | |
| Frequencysetting | 10Hz or 20Hz |
| Duty cyclesettable
in step Analog output(back panel) | |
| Outputimpedance,mark | <30Ω |
| space | >20kΩ |
| Max.switchingvoltage | 200mA |
| Max.switchingvoltage | 70V |
| Signallingreceiver Measuring range | ± 10ms |
| Resolution | 0.1ms |
| Analoginput(back panel)Input impedance (connected internally to -15V) | 750Ω |
| Shor-circuitcurrent | 10mA |
| Evaluationand 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 MFASSignalling bits a b c d (TX and RX) Evalution on screen (MODEB91) Codewordsof selected channel,FAS,NOT FAS,MFAS,NOT MEFASM\,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) Codewordsof selected channel,FAS or MFAS,S bits, Signalling bits ,B/A,B,C,D | |
| Auxiliaryoutputs(back panel)
Activation signal for crosstalk measurements Analogdecoder output for decoded signal of selected telephone channel Signallingoutput Error and alarm outputs Video signal output | |
| GeneralSpecifications Power supply Rated ranges of use for a.c. line voltage,12%to +10% | |
| swithch- selectable | 110/117/127/220/227/237V |
| BN984/05 and BN 984/55 | only 100/110/117/200/210/217v |
| Ratedrange of use of a.c.line frequency | 47.5 to 63Hz |
| Powerconsumption | approx.150VA |
| Safetyclass to IEC 348 and VDE 0411 | Class 1 |
| Ambienttemperatur | |
| Ratedrange of use | +5 to +0℃ |
| Storageand transportation | -40 to +70℃ |
| Dimensions | |
| Bench-topinstrument(w*h*d in mm) | 477*244*425 |
| Weight | approx.25kg |
| PCM Channel Measuring Set PCM-4 | |
| 2048 kbit/s version,menuin English | BN 984/01 |
| 1544kbit/s version,menu in English,WECO connectors | BN 984/02 |
2048 kbit/s version,menu in German | BN 984/03 |
| 1544kbit/s version,menu in English,1214 APS connectors | BN 984/05 |
| 2048kbit/s version,menu in Spanish | BN 984/06 |
| PCMChannel Measuring Set PCM-5 | |
| 2048 kbit/s version,menuin English | BN 984/51 |
| 1544kbit/s version,menu in English,WECO connectors | BN 984/52 |
| 2048kbit/s version,men in German | BN 984/53 |
| 1544kbit/s version,meanu in English,1214 APS connectors | BN 984/55 |
| Options Interfaces: | |
| Codirectional64 kbit/s input | BN 984/00.01 |
| Codirectional64 kbit/s
output Electrical characteristics to ITU-T G.703 | BN984/00.02 |
| Contradirectional 64kbit/s input | BN 984/00.03 |
| Contradirektionaler64 kbit/s
output Electrical characteristics to ITU-T G.703 | BN984/00.04 |
| Serial 64 kbit/s TTLinput | BN 984/00.05 |
| Serial 64 kbit/sTTL
output Co-or contradirectional,depending on mode | BN984/00.06 |
| Parallel 64 kbit/s TTLinput | BN 984/00.07 |
| Parallel 64kbit/s TTL
output Parallel 8 bit input/output with 8kHz clock signal | BN984/00.08 |
| 64 kbit/s
V.11 interface formeasurement of signalling distortion and interference fromsignalling | BN984/00.09 |
| IEEE 488/IEC 625
Interface with IEEE488 connector and K 420 connecting calbe | BN 984/00.09 |
| Analogsignalling interface for measurement of signalling distortion and interferencefrom signlling | BN 984/00.19 |
| IEEE488/IEC 625 Interface with IEEE 488 connector and K 420 connecting calbe | BN958/24 |
| Bridges: Reurn Lossand Longitudinal Conversion Transfer Loss Bridge | |
| 600Ω/900 Ω/CPLX(PCM-4only) | BN984/00.0 |
| 600Ω/900Ω 9CPLX(PCM-4only) | BN984/00.11 |
| Impedance modification(replaces 850Ω or900Ω and CPLX) | BN 984/00.32 |
| Bridgeimpedance
addition Up to 4 additional customer specific CPLX impedances canbe added to the bridge;selection lnly via IEC/IEEE interface | BN984/00.16 |
| 12 kHz low pass filter for out-of-bandnoise suppressin | BN 984/00.14 |
| Softwareretrofitted 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 |
| Specifyactual software version and serial no.when ordering | |
| Userspecified
modifications A detailed specification sheet is available for enteringthe values required | |
| Analog generator/receiverimpedance modifications (replacces 850Ω/900Ω and CPLX) | BN 984/00.31 |
| Analonggenerator output impedance modified to Zou≈0Ω in place of complex impedance | BN984/00.34 |
| Impedance modification(replaces850Ω or 900Ω and CPLX) | BN 984/00.32 |
| 1wire terminaltion modification (replaces 910Ω||39nF)(selected with PARAM 914,D-Dmode) | BN 984/00.33 |
| Tolerancemasks programmed to user specifications | BN 984/00.35 |
| Instrumentsare equipped with
ITU-T tolerance masks as
standard Forms for entering toperancemask changes are included in Appendix D of the operating manual | |
| Accessories | |
| LabWindow®Driver(forPCM-4/5 and
MU-30) for integrationin automatic test systems for development,productionand service/calibration | BN 984/95.99 |
| TestPoint
Scanner MU-30 with Balanced through0switchingof 10,24 or 30 VF channel in TX and RX directions | BN 823/11 |
| WGPenBERT mini PCM monitor(E1) (see WG PenBERT data sheet for details) | BN4555/11 |
| D.C.Loop
Holding CircuitGH-1 with capacitor- coupled output | BN 984/00.12 |
| 1.5mconnecting calbe CF (male )to 1214 APS(male) | K 348 |
| 1.0mconnecting cable CF(male)to 1214 APS (male) | K 438 |
| 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/ for | S832 |
| Front and Back Panel Covers SD-5 (1 set) | BN700/00.25 |
| 19" conversion kty | BN700/00.05 |