LeCroy_LTXXX_Digital_Storage_Oscilloscope_Service_Manual 电路图.pdf

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1、LTXXX2-SM-E LeCroy Waverunner2 Series Service Manual Version D- December 2003 RadioFans.CN 收音机爱 好者资料库 LeCroy Corporate Headquarters 700 Chestnut Ridge Road Chestnut Ridge, NY 10977-6499 USA Tel: (845) 425-2000 Fax: (845) 425-8967 Copyright October 2001. LeCroy is a registered trade-mark of LeCroy Co

2、rporation. All rights reserved. Information in this publication supersedes all earlier versions. Specifications subject to change. RadioFans.CN 收音机爱 好者资料库 Read this First 1-1 Read this First 1. Warranty and Product Support It is recommended that you thoroughly inspect the contents of the oscilloscop

3、e packaging immediately upon receipt. Check all contents against the packing list/invoice copy shipped with the instrument. Unless LeCroy is notified promptly of any missing or damaged item, responsibility for its replacement cannot be accepted. Contact your nearest LeCroy Customer Service Center or

4、 national distributor immediately (see chapter 2 for contact numbers). 1.1 Warranty LeCroy warrants its oscilloscope products for normal use and operation within specifications for a period of three years from the date of shipment. Calibration each year is recommended to ensure in-spec. performance.

5、 Spares, replacement parts and repairs are warranted for 90 days. The instruments firmware has been thoroughly tested and is thought to be functional, but is supplied without warranty of any kind covering detailed performance. Products not made by LeCroy are covered solely by the warranty of the ori

6、ginal equipment manufacturer. Under the LeCroy warranty, LeCroy will repair or, at its option, replace any product returned within the warranty period to a LeCroy authorized service center. However, this will be done only if the product is determined after examination by LeCroy to be defective due t

7、o workmanship or materials, and not to have been caused by misuse, neglect or accident, or by abnormal conditions or operation. 1.2 Product Assistance Help on installation, calibration, and the use of LeCroy equipment is available from the LeCroy Customer Service Center in your country. Note: This w

8、arranty replaces all other warranties, expressed or implied, including but not limited to any implied warranty of merchantability, fitness, or adequacy for any particular purpose or use. LeCroy shall not be liable for any special, incidental, or consequential damages, whether in contract or otherwis

9、e. The client will be responsible for the transportation and insurance charges for the return of products to the service facility. LeCroy will return all products under warranty with transport prepaid. 1.3 Maintenance Agreements LeCroy provides a variety of customer support services under Maintenanc

10、e Agreements. Such agreements give extended warranty and allow clients to budget maintenance costs after the initial three-year warranty has expired. Other services such as installation, training, enhancements and on-site repairs are available through special supplemental support agreements. 1.4 Sta

11、ying Up to Date LeCroy is dedicated to offering state-of-the-art instruments, by continually refining and improving the performance of LeCroy products. Because of the speed with which physical modifications may be implemented, this manual and related documentation may not agree in every detail with

12、the products they describe. For example, there might be small discrepancies in the values of components affecting pulse shape, RadioFans.CN 收音机爱 好者资料库 1-2 Read this First timing or offset, and infrequently minor logic changes. However, be assured the scope itself is in full order and incorporates th

13、e most up-to-date circuitry. LeCroy frequently updates firmware and software during servicing to improve scope performance, free of charge during warranty. You will be kept informed of such changes, through new or revised manuals and other publications. Nevertheless, you should retain this, the orig

14、inal manual, for future reference to your scopes unchanged hardware specifications. 1.5 Service and Repair Please return products requiring maintenance to the Customer Service Department in your country or to an authorized service facility. The customer is responsible for transportation charges to t

15、he factory, whereas all in-warranty products will be returned to you with transportation prepaid. Outside the warranty period, you will need to provide us with a purchase order number before we can repair your LeCroy product. You will be billed for parts and labor related to the repair work, and for

16、 shipping. 1.6 How to return a Product Contact the nearest LeCroy Service Center or office to find out where to return the product. All returned products should be identified by model and serial number. You should describe the defect or failure, and provide your name and contact number. In the case

17、of a product returned to the factory, a Return Authorization Number (RAN) should be used. Return shipments should be made prepaid. We cannot accept COD (Cash On Delivery) or Collect Return shipments. We recommend air-freighting. It is important that the RAN be clearly shown on the outside of the shi

18、pping package for prompt redirection to the appropriate LeCroy department. 1.7 What Comes with Your Scope The following items are shipped together with the standard configuration of this oscilloscope: Front Scope Cover 10:1 10 M PP006 Passive Probe one per channel Two 6.3A 250 V Fuses, AC Power Cord

19、 and Plug Operators Manual , Remote Control Manual, Hands-On Guide Performance Certificate or Calibration Certificate, Declaration of Conformity Note:Note: Wherever possible, please use the original shipping carton. If a substitute carton is used, it should be rigid and packed so that that the produ

20、ct is surrounded by a minimum of four inches or 10 cm of shock-absorbent material. General Information 2-1 2. General Information 2.1 Product Assistance Help on installation, calibration, and the use of LeCroy equipment is available from your local LeCroy office, or from LeCroys Customer Care Center

21、, 700 Chestnut Ridge Road, Chestnut Ridge, New York 109776499, U.S.A., tel. (845) 5786020 European Service Center, 4, Rue Mose Marcinhes, 1217 Meyrin 1, Geneva Switzerland, tel. (41) 22/719 21 11. LeCroy Japan Corporation, Sasazuka Center Bldg 6th floor, 1-6, 2-Chome, Sasazuka, Shibuya-ku, Tokyo Jap

22、an 151-0073, tel. (81) 3 3376 9400 2.2 Installation for Safe and Efficient Operation Operating Environment For safe operation of the instrument to its specifications, ensure that the operating environment is maintained within the following parameters: Temperature . 5 to 40 C (41 to 104 F) rated. Hum

23、idity. Maximum relative humidity 80 % RH (non-condensing) for temperatures up to 31 C decreasing linearly to 50 % relative humidity at 40 C Altitude. 2000 m (6560 ft) The oscilloscope has been qualified to the following EN61010-1 category: Installation (Overvoltage) Category . II Protection Class. .

24、 I Pollution Degree . . 2 2-2 General Information Safety Symbols Where the following symbols or indications appear on the instruments front or rear panels, or elsewhere in this manual, they alert the user to an aspect of safety. .CAUTION: Refer to accompanying documents (for Safety- related informat

25、ion). See elsewhere in this manual wherever the symbol is present. .CAUTION: Risk of electric shock .On (Supply) ?.Standby (Supply) .Earth (Ground) Terminal . Alternating Current Only . Chassis Terminal .Earth (Ground) Terminal on BNC Connectors WARNING.Denotes a hazard. If a WARNING is indicated on

26、 the instrument do not proceed until its conditions are understood and met. WARNING Any use of this instrument in a manner not specified by the manufacturer may impair the instruments safety protection. The oscilloscope has not been designed to make direct measurements on the human body. Users who c

27、onnect a LeCroy oscilloscope directly to a person do so at their own risk. Use only indoors. Power Requirements The oscilloscope operates from 90132 V AC 45-440 Hz, and 180250 V AC; 4566 Hz. No voltage selection is required, since the instrument automatically adapts to the line voltage present. Fuse

28、s The power supply of the oscilloscope is protected against short-circuit and overload by means of two 6.3 A/250 V AC “T”-rated fuses, located above the mains plug. Disconnect the power cord before inspecting or replacing a fuse. Open the fuse box by inserting a small screwdriver under the plastic c

29、over and prying it open. For continued fire protection at all line voltages, replace only with fuses of the specified type and rating (see above). Ground The oscilloscope has been designed to operate from a single-phase power source, with one of the current-carrying conductors (neutral conductor) at

30、 ground (earth) potential. Maintain the ground line to avoid an electric shock. None of the current-carrying conductors may exceed 250 V rms with respect to ground potential. The oscilloscope is provided with a three-wire electrical cord containing a three-terminal polarized plug for mains voltage a

31、nd safety ground connection. The plugs ground terminal is connected directly to the frame of the unit. For adequate protection against electrical hazard, this plug must be inserted into a mating outlet containing a safety ground contact. Cleaning and Maintenance Maintenance and repairs should be car

32、ried out exclusively by a LeCroy technician. Cleaning should be limited to the exterior of the instrument only, using a damp, soft cloth. Do not use chemicals or abrasive elements. Under no circumstances should moisture be allowed to penetrate the disk drive analyzer. To avoid electric shocks, disco

33、nnect the instrument from the power supply before cleaning. CAUTION Risk of electrical shock: No user-serviceable parts inside. Leave repair to qualified personnel. General Information 2-3 2-4 General Information Power On Connect the oscilloscope to the power outlet and switch it on using the power

34、On/Standby button, located near the left-hand corner of the instrument below the screen. After the instrument is switched on, auto-calibration is performed and a test of the disk drive analyzers ADCs and memories is carried out. The full testing procedure takes approximately 10 seconds, after which

35、time a display will appear on the screen. Specifications 3-1 Specifications 3 Specifications 3.1 Models Waverunner2 LT372/262 Series: Two channels Waverunner2 LT584/374/354/264 Series: Four channels 3.2 Vertical System Bandwidth ( 3dB): LT584: 1 Ghz; LT374/372/354:500 MHz; LT264/262:350 MHz 50 Bandw

36、idth Limiter: 20 MHz and 200 MHz can be selected for each channel. Input Impedance: 50 1.0 %; 1 M 1.0 % / 12 pF typical using PP006 probe Input Coupling: 1 M: AC, DC, GND; 50 : DC, GND Max Input: 50 : 5 Vrms; 1 M: 400 V max (peak AC 250:1 at same V/div settings 3.3 Timebase System Timebases: Main an

37、d up to four zoom traces simultaneously Time/Div Range: LT374/372/LT584: 500 ps/div 1000 s/div, LT264/262/354: 1 ns/div to 1000 s/div Clock Accuracy: 10 ppm Interpolator Resolution: 5 ps External Clock: 500 MHz, 50 , or 1 M impedance Roll Mode: time/div 500 ms - 1000 s/div or sample rate 100 kS/s ma

38、x 3-2 Specifications 3.4 Acquisition System Single Shot Sample Rate LT584/M/L LT374/M/L LT372 LT264/M LT262 LT354/M/ML 1 Channel Max 4 GS/s 4 GS/s 4 GS/s 1 GS/s 1 GS/s 1 GS/s 2 Channels Max 4 GS/s 4 GS/s 2 GS/s 1 GS/s 1 GS/s 1 GS/s 3-4 Channels Max 2 GS/s 2 GS/s NA 1 GS/s NA 1 GS/s Maximum Acq Point

39、s/Ch 1 Channel Max 500k/2M/8M500k/2M/8M500k 100k/1M 100k 500K/1M/2M 2 Channels Max 500k/2M/8M500k/2M/8M250k 100k/1M 100k 500K/1M/2M 3-4 Channels Max 250k/1M/4M250k/1M/4MNA 100k/1M NA 250k/1M/4M 3.5 Acquisition Modes Random Interleaved Sampling (RIS): 50 GS/s for repetitive signals 500 ps/div - 1 s S

40、ingle Shot: For transient and repetitive signals: 1ns/div - 1000s/div Sequence Mode: LT262/264 2 - 400 segments LT584/354/372/374 2 - 1000 segments Memory Option M or L 2 - 400 segments Intersegment Time 50 sec max 3.6 Acquisition Processing Averaging: Summed averaging to 103 sweeps; continuous aver

41、aging with weigthing range range from 1:1 to 1:1023 (standard). Summed averaging up to 106 sweeps (optional with WAVA) Enhanced Resolution (ERES): From 8.5 to 11 bits vertical resolution Envelope (Extrema): Envelope, floor, roof for up to 106 sweeps 3.7 Triggering System Modes: NORMAL, AUTO, SINGLE

42、and STOP Sources: Any input channel, External, EXT 10 or line; slope, level and coupling are unique to each source (except line trigger). Inactive channels useable as trigger inputs. Slope: Positive, Negative, Window Coupling Modes: DC,AC,HFREJ,LFREJ AC Cutoff Frequency 7.5 Hz typical HFREJ, LFREJ 5

43、0 kHz typical Pre-trigger delay 0 - 100% of horizontal time scale Post-trigger delay 0 - 10000 divisions Hold-off by time or events Up to 20s or from 1 to 99,999,999 events Internal trigger range 5 div Maximum Trigger Frequency: Up to 500 MHz (350 MHz on LT264/262) External Trigger Input Range: 0.5

44、V, 5 V with Ext 10 Max external input 50 : 5 V DC or 5Vrms Max external input 1M : 400 Vmax (DC + peak AC 5 kHz) 3.8 Automatic Setup Auto Setup: Automatically sets timebase, trigger, and sensitivity to display a wide range of repetitive signals. Vertical Find: Automatically sets the vertical sensiti

45、vity and offset for the selected channels and display a waveform with maximum dynamic range. 3.9 Probes Model PP006: PP006 with auto-detect: 10:1, 10 M; one probe per channel Probe System: ProBus Intelligent Probe System supports active, high-voltage, current, and differential probes, and differenti

46、al amplifiers Scale Factors: Up to 12 automatically or manually selected Specifications 3-3 3-4 Specifications 3.10 Color Waveform Display Type: VGA Color 8.4-inch flat-panel TFT-LCD Resolution: 640 x 480 resolution Screen Saver: Display blanks after 10 minutes (when screen saver is enabled) Real Ti

47、me Clock: Date, hours, minutes, and seconds displayed with waveform Number of Traces: Display a maximum of eight traces. Simultaneously display channel, zoom, memory, and math traces Grid Styles: Single, Dual, Quad, Octal, XY, Single+XY, Dual+XY; Full Screen gives enlarged view of each style Intensity Controls: Separate intensity control for grids and waveforms Waveform Styles: Sample dots joined or dots only regular or bold sample point highlighting Trace Overlap Display: Select opaque or transparent mode with autom