LeCroy Waverunner2 Series Service Manual
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LeCroy Waverunner2 Series Service Manual

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LeCroy Waverunner2 Series
Service Manual
Version D- December 2003
LTXXX2-SM-E

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  • Page 1 LeCroy Waverunner2 Series Service Manual Version D- December 2003 LTXXX2-SM-E...
  • Page 2 700 Chestnut Ridge Road Chestnut Ridge, NY 10977-6499 Tel: (845) 425-2000 Fax: (845) 425-8967 http://www.lecroy.com Copyright © October 2001. LeCroy is a registered trade-mark of LeCroy Corporation. All rights reserved. Information in this publication supersedes all earlier versions. Specifications subject to change.

  • Page 3: Read This First

    LeCroy authorized service center. However, this will be done only if the product is determined after examination by LeCroy to be defective due to workmanship or materials, and not to have been caused by misuse, neglect or accident, or by abnormal conditions or operation.

  • Page 4: Service And Repair

    You will be billed for parts and labor related to the repair work, and for shipping. 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.

  • Page 5: General Information

    General Information Product Assistance Help on installation, calibration, and the use of LeCroy equipment is available from your local LeCroy office, or from LeCroy’s • Customer Care Center, 700 Chestnut Ridge Road, Chestnut Ridge, New York 10977–6499, U.S.A., tel. (845) 578–6020 •...

  • Page 6: Safety Symbols

    Safety Symbols Where the following symbols or indications appear on the instrument’s 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 information). See elsewhere in this manual wherever the symbol is present.

  • Page 7: Power Requirements

    The oscilloscope has not been designed to make direct measurements on the human body. Users who connect a LeCroy oscilloscope directly to a person do so at their own risk. Use only indoors. Power Requirements The oscilloscope operates from 90–132 V AC 45-440 Hz, and 180–250 V AC; 45–66 Hz.
  • Page 8 Power On Connect the oscilloscope to the power outlet and switch it on using the power 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 analyzer's ADCs and memories is carried out.

  • Page 9: Specifications

    Specifications 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 Ω Bandwidth Limiter: 20 MHz and 200 MHz can be selected for each channel. Input Impedance: 50 Ω...

  • Page 10: Acquisition System

    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...

  • Page 11: Triggering System

    3.7 Triggering System Modes: NORMAL, AUTO, SINGLE 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...
  • Page 12 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 Time 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;...

  • Page 13: Setup Storage

    Waveform: M1, M2, M3, M4; (Store full-length waveforms with 16 bits/data point) Zoom and Math: Four traces A, B, C, D with chained trace capability 3.15 Setup Storage For front panel and instrument status: Four non-volatile memories and floppy drive are standard;...

  • Page 14: Physical Dimensions

    3.19 General Auto Calibration: Ensures specified DC and timing accuracy is maintained for 1 year minimum. Auto Calibration Time: <500ms Power Requirements: 90–132 V AC 45-440 Hz, and 180–250 V AC; 45–66 Hz; automatic AC voltage selection, maximum power dissipation 150 VA–230 VA, depending on model Battery Backup: Front panel settings retained for two years minimum Warranty and Calibration: Three years;...

  • Page 15: Measure Tools (Standard)

    3.22 Measure Tools (Standard) Automated measurements; Display any five parameters together with their average, high, low, and standard deviations. amplitude fall 90-10% period area fall 80-20% Phase base frequency rise 10-90% cycle mean maximum rise 20-80% cycle rms mean cycles minimum sdev delay...
  • Page 16 3.27 Extended Measure Tools cycle median first point ∆time@level, % and volts last point ∆time @level from trigger number of points ∆time from clock to data + (setup median time) ∆time from clock to data - (hold time) rise @ level, % and volts fall @ level, % and volts std.

  • Page 17: Basic Triggers

    3.32 Basic Triggers Edge/Slope/Window/Line: Triggers when signal meets slope and level condition 3.33 SMART Trigger Types State/Edge qualified: Triggers on any input source only if a given state (or transition) has occurred on another source. Delay between sources is selectable by time or number of events.
  • Page 18 3.37 Documentation Included with all WavePro Oscilloscopes: Operations Manual — hard copy, Remote Programming Manual — hard copy, CD-ROM — PDF formatted manuals plus software utilities including: ScopeExplorer, ActiveDSO, MaskMaker, DSO-Filter and DSO-Net Print Gateway. 3-10 Specifications...

  • Page 19: Theory Of Operation

    Theory of Operation Processor Board MPC603e Processor The PowerPC603e on the processor board is a 64-bit RISC processor having 2x32Kbyte cache and features high speed processing and quick memory access. The processor is designed to operate with an internal clock which is 5 times the external bus clock cycles and is used under the 32bit mode.
  • Page 20 CPU’s Block Diagram CPU : PowerPC603e SDRAM max 512MB Super I/O RS232C, Parallel, Floppy MAIN Board I/F VGA : 65545 Sizer Flash PROM 32bit BUS NVRAM : 128KB Real Time Clock Interrupt Controller Front Panel I/F GP-IB Internal Printer I/F Small Peripherals PCMCIA type I/II/III Other Control Ports...
  • Page 21 SDRAM The SDRAM circuit consists of one DIMM module, from 64MB to a maximum of 512MB. The DIMM module type is 168pin SDRAM, 3.3V unbuffered CL=2. The SDRAM control circuit is built with one CPLD, and several gate ICs. The SDM (IC87) located on the main control circuit generates all types of bus cycle timing (normal R/W, 2-beat/8-beat bursts of R/W), refresh cycles.
  • Page 22 Memory Mapping When power is turned on, the internal software automatically sets the system's memory size to the largest capacity available with the DIMM that is installed (64MB - 512MB DIMM size). VGA controller The VGA controller chip 65545(IC29) contains the logic circuits to decode its own addresses.
  • Page 23 Bus Sizer The MPC603e processor does not support dynamic bus sizing, which is performed with the 68K processor family. Each 8bits of the 32bit bus is fixed or assigned with the lower addresses, or 0 through 3 bits. Therefore, if an 8bit device were directly connected to the bus, this device would be seen in 4byte steps each in the memory map area.
  • Page 24 when the screen appears) is completed, because the program must be processed in the SDRAM after transferring the program content from the Flash PROM into the SDRAM. NVRAM This memory chip is powered from V in the RTC. When the main power is off, the NVRAM is powered by the lithium battery, when it is on, it is powered from V The #CS1 signals are also controlled by the RTC.
  • Page 25 Interrupt Controller In order to prioritize and control several interrupt sources, it is necessary to use an IC of uPD71059. It scans eight interrupt signals and sends a unique interrupt signal to the processor when an (unmasked) interrupt signal appears. Interrupt levels are assigned as follows: level 0 (lowest priority) FDC...
  • Page 26 Bus Error Generation The MPC603e expects NTA and NAACK signals for acknowledgement to the current bus cycle, and inserts wait states during the period NTA and NAACK are kept at “high” levels (any of external devices have not pulled these signals "low"). As long as any of the devices do not return the acknowledgement, the bus is kept in this wait-condition.
  • Page 27 Relation of I/O Structure to the associated CPLDs The following block-diagram describes the flow in the decoder and the relationships between the acknowledgement to be returned to the CPU and CPLDs. Three-line boxes are CPLDs, and one-line boxes indicate other ICs and function blocks.

  • Page 28: Front End

    Main Board Introduction The main board is divided into the following sections: • Front End Based on the Hybrid HFE428, HSY632 switchyard to combine the input channels. • A/D Converter & Digital Acquisition Memory Based on the HAM631. • Trigger Based on the Hybrids HTR420 discriminator &...
  • Page 29 Control Relay control The relay of the attenuator is set by selecting the input coupling and the gain as shown in the table below. RL1, 2 and 5 are driven with +5V/0V, and RL3, 4 is driven with +5V/-5V. Input coupling Control port Relay 1M,DC...
  • Page 30 Block diagram 1 HAM631 4-12 Theory of Operation...

  • Page 31: Acquisition Block Diagram

    4.2.2 Acquisition Block Diagram 32-bit 32-bit Theory of Operation 4-13...
  • Page 32 4.2.3 Control & Transfer Block Diagram PowerPC Processor System Memory SDRAM (ReadOut Plus Min-Max) 32-bit Serial Bus MAM Control Digitizer System Digitizer System FRONTEND FRONTEND FRONTEND FRONTEND HFE428 A HFE428 B HFE428 C HFE428 D 4-14 Theory of Operation...

  • Page 33: Channel Mode

    4.2.4 Channel Mode 4ch mode(LT374) LT264 HSY632 HFE428 HAM631 HAM631 MSY443 HTR420 HFE428 HAM631 HTR420 HAM631 MSY443 HFE428 HAM631 HAM631 HTR420 HFE428 HTR420 HSY632 HFE428 HAM631 HAM631 MSY443 HTR420 HFE428 HAM631 HTR420 HAM631 MSY443 HFE428 HAM631 HAM631 HTR420 HFE428 HTR420 2ch mode(LT374) HSY632 HFE428...

  • Page 34: Analog Controls

    4.2.5 µP Control Control between the microprocessor and the main board is accomplished via the RPM. The RPM functions are: • Processor interface • MAM interface • 8 bit bus interface (MTB411, MCG426, MST429A, IIC) • Serial interface • Min-Max Computation •...
  • Page 35 4.2.8 Time Base Introduction The time base includes three circuits: • MCG426: generates sampling clocks: 12.5 MHz up to 2GHz generates clocks for the MTB411 interleaves sampling clocks to increase sampling rate and memory depth. • MTB411A: Time Base System TDC interpolator and Real Time computation Trigger circuitry Frequency divider...

  • Page 36: Power Supply

    Power Supply Do not touch any electric parts inside the power supplies during operation as the primary side of the power unit has many high voltage portions to ground. Input Voltages The power supply supports a wide ranges of inputs, 90-132 V AC (45-440Hz) and 90-264V AC (45-66Hz) are allowed.

  • Page 37: Performance Verification

    Performance Verification Introduction This chapter contains procedures suitable for determining if the LT584, LT374/372, LT264/262 and LT354 Digital Storage Oscilloscope performs correctly and as warranted. They check all the characteristics listed in subsection 5.1.1. Because they require time and suitable test equipment, you may not need to perform all of these procedures, depending on what you want to accomplish.

  • Page 38: Test Equipment Required

    HP8648B Radio Frequency Frequency Accuracy : 1 PPM or equivalent Signal Generator Frequency : 0 to 5 kHz LeCroy LW420 Audio Frequency Amplitude : 8 V peak to peak or HP33120A or equivalent Voltage Generator Range of 0 to 20 V, in...

  • Page 39: Input Impedance

    Input Impedance The impedance values for 50Ω and 1MΩ couplings are measured with a high precision digital multimeter. The DMM is connected to the DSO in 4-wire configuration (input and sense), allowing for accurate measurements. Specifications & Test limits DC 1.00 MΩ ±1 % AC 1.20 MΩ...
  • Page 40 ! Set the DMM with Ohms and Ohms sense to provide a 4 wire measurement. ! Connect it to Channel 1. ! Measure the input impedance. Record it in Table 2, and compare it to the limits. ! Repeat the above test for all input channels. ! Recall xxxP002.PNL or Set Input gain to 200 mV/div.
  • Page 41 ! For all input channels measure the input impedance. ! Record the input impedance in Table 2, and compare it to the limits. ! Recall xxxP004.PNL or Set Input gain to 200 mV/div on all 4 Channels. ! Repeat the test for all input channels. ! Record the measurements in Table 2, and compare the results to the limits in the test record.
  • Page 42 a. DC 1MΩ Ω Ω Ω ! Recall xxxP007.PNL or configure the DSO : Trigger mode Auto Select Setup trigger Trigger on Cplg Ext DC 1MΩ Ω Ω Ω External Time base 50 nsec/div. ! Connect the DMM to External, and measure the input impedance. ! Record the input impedance in Table 2, and compare it to the limits.
  • Page 43 ! Recall xxxP009.PNL or configure the DSO: Select Setup trigger Trigger on DC 50Ω Ω Ω Ω External ! Connect the DMM to External, and measure the input impedance. ! Record the input impedance in Table 2, and compare the result to the limit in the test record.

  • Page 44: Leakage Current

    Leakage Current The leakage current is tested by measuring the voltage across the input channel. Test limit DC 1MΩ : ±1 mV 5.5.1 Channel Leakage Current ! Recall xxxP010.PNL or configure the DSO: Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1, Channel 2, Channel 3 &...
  • Page 45 5.5.2 External Trigger Leakage Current a. DC 50Ω Ω Ω Ω ! Recall xxxP011.PNL or configure the DSO as shown in 5.5.1 and make the following changes : Select Setup trigger Set Trigger on DC 50Ω Ω Ω Ω External ! Connect the DMM to External.
  • Page 46 Noise Noise tests with open inputs are executed on all channels for both 1MΩ and 50Ω input impedance, with AC and DC input coupling, 0 mV offset, at a gain setting of 5mV/div., and different Time base settings. The scope parameters functions are used to measure the RMS amplitude. 5.6.1 Rms Noise Test limits...
  • Page 47 ! Press Clear Sweeps. ! Measure for at least 50 sweeps, then press Stop to halt the acquisition. ! Record the four high sdev parameter values in Table 4, and compare the test results to the limits in the test record. ! Repeat the test for Time base : 1 msec/div., 50 µ...
  • Page 48 ! Record the four high sdev parameter values in Table 4, and compare the test results to the limits in the test record. 5-12 Performance Verification Rev. D...
  • Page 49 c. DC 50Ω Ω Ω Ω ! Recall xxxP014.PNL or configure the DSO as shown in 5.6.1 and make the following changes : DC 50Ω Ω Ω Ω on all 4 Channels Input Coupling Input gain 5 mV/div. on all 4 Channels 2 µ...
  • Page 50 This test measures the DC Accuracy of the absolute voltage measurements at 0V offset setting. It requires a DC source with a voltage range of 0 V to 20 V adjustable in steps of no more than 15 mV, and a calibrated DMM that can measure voltage to 0.1 %.
  • Page 51 On line 2 Measure mean of B On line 3 Measure mean of C On line 4 Measure mean of D For the low sensitivities: 2 mV, 5 mV, 10 mV and 20 mV/div., connect the test equipment as shown in Figure 5-1. DC Power Supply 20db 20db Figure 5-1: DC 1MΩ...
  • Page 52 1) Connect the DMM and record the voltage reading in Table 6, column DMM. 2) Press Clear Sweeps 3) After 10 sweeps, read off the DSO mean parameter, and record the measurement in Table 5, column Mean. ! For each DC voltage applied to the DSO input, repeat parts 1), 2), 3) and 4). ! Calculate the Difference ( ∆...
  • Page 53 Offset Accuracy The offset test is done at 5mV/div, with a signal of ±1 Volt cancelled by an offset of the other polarity. Specifications ± (0.015 x Voffset + 0.005 x FS + 1mV) FS [volts] = 8[div] x sensitivity[volts/div] Voffset [volts] = setting offset voltage Procedure ! Recall xxxP019.PNL or configure the DSO:...
  • Page 54 DC Power Supply Figure 5-4 Offset Accuracy Test Setup ! Set the output of the external DC voltage reference source to − − − − 1 Volt. (or reverse the polarity of the banana jack adapter if the supply does not have bipolar outputs) 1) Verify that the displayed trace A : Average (1) is on the screen, near the center horizontal graticule line.
  • Page 55 Rev. D Performance Verification 5-19...
  • Page 56 Bandwidth The purpose of this test is to ensure that the entire system meets the bandwidth specification. An external source is used as the reference to provide a signal where amplitude and frequency are well controlled. If a leveled sine wave generator is not used then the amplitude of the generator as a function of frequency and power must be calibrated using an HP8482A sensor on an HP437B power meter or equivalent.
  • Page 57 ! Connect a 5ns 50Ω BNC cable to the RF output of the HP8648B generator and then through a 6dB attenuator and the necessary adapters to the power sensor. Power Meter Sine Wave Generator Power Ref Sensor Input Output Power Sensor 6 db Figure 5-5 : Power Meter Equipment Setup !Set the generator frequency to 300 kHz...
  • Page 58 Sine Wave Generator Figure 5-6 : 50Ω Ω Ω Ω Bandwidth Equipment Setup ! Measure for at least 10 sweeps, record the average value of sdev(1) in Table 7 for LT37x or LT354 and Table 7A for LT26x. ! Repeat the above 3 steps for Channel 2, Channel 3 & Channel 4 substituting channel controls and input connector.
  • Page 59 ! Recall xxxP023.PNL or configure the DSO as shown in 5.9 and for each Channel make the following change : Input gain 100mV/div ! Connect the test equipment as shown in Figure 5-5. ! Set the generator frequency to 300 kHz ! Set the generator amplitude to measure 0.800 mW on the power meter.
  • Page 60 ! Set the generator frequency to 300 kHz. ! From the generator, apply the recorded generator signal amplitude to Channel 1. ! Press Clear Sweeps. ! Measure for at least 100 sweeps, record the average value of sdev(1) in Table 8 for LT37x or LT354, Table 8A for LT26x and Table 8B for LT584.
  • Page 61 b. DC 50Ω Ω Ω Ω with Bandwidth Limiter On ! Recall xxxP024.PNL or configure the DSO: Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1 DC 50Ω Ω Ω Ω Input Coupling Global BWL 20 MHz Input gain 100 mV/div.
  • Page 62 ! Set Global BWL 200 MHz ! Set Timebase 5 nsec/div. 5-26 Performance Verification Rev. D...
  • Page 63 ! Increase the generator frequency until sdev(1) = 140 mV. (typically 200 MHz) ! Press Clear Sweeps ! When sdev(1) = 140 mV, record Freq(1) in Table 9. ! Repeat the 20 MHz and 200 MHz Bandwidth limiter tests for the other channels, substituting channel controls and input connector.

  • Page 64: Trigger Level

    5.10 Trigger Level The trigger capabilities are tested for several cases of the standard edge trigger: ! Channel (internal), and External Trigger sources ! Three DC levels: −3, 0, +3 major screen divisions ! DC coupling ! Positive and negative slopes 5.10.1 Channel Trigger at 0 Division Threshold DC Coupling Recall xxxP028.PNL or configure the DSO:...
  • Page 65 ! Set the output of the LeCroy LW420 or equivalent audio frequency signal generator to 1 kHz. ! Connect the output of the generator to Channel 1 through a 50 Ohm coaxial cable and adjust the sine wave output amplitude to get 8 divisions peak to peak .
  • Page 66 ! Repeat steps 5.10.1.a. and 5.10.1.b. for all input channels, substituting channel controls (DC, Pos, Neg) and input connector. Recall xxxP029.PNL for Channel 2, xxxP030.PNL for Channel 3, xxxP031.PNL for Channel 4, or select Trigger on the Channel under test. The Trigger level is displayed in either the icon 2, 3 or 4 ! Record the measurements in Table 10 and compare the test results to the corresponding limits in the test record.
  • Page 67 5.10.2 Channel Trigger at +3 Divisions Threshold DC Coupling ! Recall xxxP032.PNL or configure the DSO as shown in 5.10.1.a and for each Channel make the following change : Set Trigger level : DC +300 mV ! Connect the output of the generator to Channel 1 through a 50 Ohm coaxial cable.
  • Page 68 ! Repeat for all input channels, substituting channel controls ( DC, Pos, Neg ) and input connector. Recall xxxP033.PNL for Channel 2, xxxP034.PNL for Channel 3, xxxP035.PNL for Channel 4, or select Trigger on the Channel under test. The Trigger level is displayed in either the icon 2, 3 or 4 ! Record the measurements in Table 10 and compare the test results to the corresponding limits in the test record.
  • Page 69 5.10.3 Channel Trigger at − − − − 3 Divisions Threshold DC Coupling ! Recall xxxP036.PNL or configure the DSO as shown in 5.10.1.a and for each channel make the following change : Set Trigger level : DC − − − − 300 mV ! Connect the output of the generator to Channel 1 through a 50 Ohm coaxial cable.
  • Page 70 ! Repeat for all input channels, substituting channel controls ( DC, Pos, Neg ) and input connector. Recall xxxP037.PNL for Channel 2, xxxP038.PNL for Channel 3, xxxP039.PNL for Channel 4, or select Trigger on the Channel under test. The Trigger level is displayed in either the icon 2, 3 or 4 ! Record the measurements in Table 10 and compare the test results to the corresponding limits in the test record.
  • Page 71 10 sweeps ! Connect the test equipment as shown in Figure 5-7. ! Set the output of the LeCroy LW420 or equivalent audio frequency signal generator to 1 kHz. ! Adjust the sine wave output amplitude to get 8 divisions peak to peak .
  • Page 72 Figure 5-7 : External Trigger Equipment Setup ! Press Clear Sweeps ! Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2, at top left. ! Set Trigger Slope Ext : Neg ! Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2, at top left.
  • Page 73 5.10.5 External Trigger at +3 Divisions Threshold DC Coupling ! Recall xxxP041.PNL or configure the DSO as shown in 5.10.4.a and make the following change : Set Ext Trigger level : DC +300 mV ! Connect the test equipment as shown in Figure 5-7. ! Press Clear Sweeps, ! Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2, at top left.
  • Page 74 DC Coupling ! Recall xxxP042.PNL or configure the DSO as shown in 5.10.4.a and make the following change : − − − − Set Ext Trigger level : DC 300 mV ! Connect the test equipment as shown in Figure 5-7. ! Press Clear Sweeps.
  • Page 75 10 sweeps ! Connect the test equipment as shown in Figure 5-7. ! Set the output of the LeCroy LW420 or equivalent audio frequency signal generator to 1 kHz. ! Adjust the sine wave output amplitude to get 8 divisions peak to peak .
  • Page 76 100 mV in the icon 2, at top left. ! Set Trigger Slope Ext/10 : Neg ! Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2, at top left. ! Compare the test results to the corresponding limit in the test record. 5-40 Performance Verification Rev.
  • Page 77 5.10.8 External/10 Trigger at +3 Divisions Threshold DC Coupling ! Recall xxxP044.PNL or configure the DSO as shown in 5.10.7.a and make the following change : Set Ext/10 Trigger level : DC +3 V ! Connect the test equipment as shown in Figure 5-7. ! Press Clear Sweeps, ! Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2, at top left.
  • Page 78 5.10.9 External/10 Trigger at − − − − 3 Divisions Threshold DC Coupling ! Recall xxxP045.PNL or configure the DSO as shown in 5.10.7.a and make the following change : − − − − Set Ext/10 Trigger level : DC ! Connect the test equipment as shown in Figure 5-7.

  • Page 79: Pulse Width

    5.11 Smart Trigger 5.11.1 Trigger on Pulse Width 10 nsec a. Pulse Width < 10 nsec ! Recall xxxP046.PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels trace ON Channel 1 DC 50Ω Ω Ω Ω Input coupling Input gain .5 V/div.
  • Page 80 Pulse Width < 10 nsec b. Pulse Width > 10 nsec 5-44 Performance Verification Rev. D...
  • Page 81 5.11.2 Trigger on Pulse Width 100 nsec a. Pulse Width < 100 nsec ! Recall xxxP047.PNL or configure the DSO as shown in 5.11.1.a and make the following changes : Width < 100 nsec : Width > 100 nsec : Time base 20 nsec/div.
  • Page 82 5.12 Time Base Accuracy An external sine wave generator of 0.1 MHz with a frequency accuracy better than 1 PPM is used. Specifications & Test limit 500 MHz clock : accuracy : ≤ ≤ ≤ ≤ ± ± ± ± 0.001 % or ≤ ≤ ≤ ≤ ± ± ± ± 10 PPM Procedure ! Recall xxxP048.PNL or configure the DSO Panel Setups...
  • Page 83 ! Statistics ! Change parameters ! On line 1 Delay of 1 ! On line 2 Delay of A ! Check that the displayed Channel 1 trace is aligned with the sine wave from memory 1. ! This allows the accuracy of the time base clock to be checked 5000 periods after the trigger point.
  • Page 84 5-48 Performance Verification Rev. D...

  • Page 85: Test Equipment Used

    LT584 & LT374/372 & LT354 & LT264/262 Test Record LeCroy Digital Storage Oscilloscope Performance Certificate LT584 & LT374/372 & LT354 & LT264/262 Manual Performance Test Procedure Version D – December 2003 Model Serial Number Customer Software Version Inspection Date Next Due...
  • Page 86 This page intentionally left blank Rev. D...
  • Page 87 LT584 & LT374/372 & LT354 & LT264/262 Test Record Coupling Volts/div. Measured Measured Measured Measured Measured Measured Lower Upper Channel 1 Channel 2 Channel 3 Channel 4 External External/10 Limit Limit Impedance Impedance Impedance Impedance Impedance Impedance Ω Ω Ω Ω , MΩ Ω Ω Ω Ω...
  • Page 88 LT584 & LT374/372 & LT354 & LT264/262 Test Record Coupling Time/Div. Measured Measured Measured Measured LT37x LT354 sdev Channel 1 sdev Channel 2 sdev Channel 3 sdev Channel 4 LT26x Limits 20 ms 0.45 DC 1MΩ 1 ms 0.45 DC 1MΩ 50 µs 0.45 DC 1MΩ...
  • Page 89 LT584 & LT374/372 & LT354 & LT264/262 Test Record Volts Attenu Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 Limits /div ator V & mV V & mV V & mV V & mV ∆ ∆ ∆ ∆ ∆...
  • Page 90 LT584 & LT374/372 & LT354 & LT264/262 Test Record Volt Coupling Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 Limits /div. offset output V & mV V & mV V & mV V & mV ∆ ∆ ∆ ∆ ∆...
  • Page 91 LT584 & LT374/372 & LT354 & LT264/262 Test Record Frequency Measured Generator Measured Measured Measured Measured Lower Upper Power Amplitude Channel 1 Channel 2 Channel 3 Channel 4 Limit Limit Sdev(1) Ratio(1) Sdev(2) Ratio(2) Sdev(3) Ratio(3) Sdev(4) Ratio(4) to 0.3 to 0.3 to 0.3 to 0.3...
  • Page 92 LT584 & LT374/372 & LT354 & LT264/262 Test Record Frequency Measured Generator Measured Measured Measured Measured Lower Upper Power Amplitude Channel 1 Channel 2 Channel 3 Channel 4 Limit Limit Sdev(1) Ratio(1) Sdev(2) Ratio(2) Sdev(3) Ratio(3) Sdev(4) Ratio(4) to 0.3 to 0.3 to 0.3 to 0.3...
  • Page 93 LT584 & LT374/372 & LT354 & LT264/262 Test Record Frequency Measured Generator Measured Measured Measured Measured Lower Upper Power Amplitude Channel 1 Channel 2 Channel 3 Channel 4 Limit Limit Sdev(1) Ratio(1) Sdev(2) Ratio(2) Sdev(3) Ratio(3) Sdev(4) Ratio(4) to 0.3 to 0.3 to 0.3 to 0.3...
  • Page 94 LT584 & LT374/372 & LT354 & LT264/262 Test Record Trigger Trigger Channel 1 Channel 2 Channel 3 Channel 4 Lower Upper Level Slope Limit Limit Measured Measured Measured Measured Trigger Trigger Trigger Trigger Level (1) Level (2) Level (3) Level (4) −30 −30 +300...
  • Page 95 LT584 & LT374/372 & LT354 & LT264/262 Test Record Smart Trigger Generator Width Width Triggered Pass Pulse Width Frequency < > < 10 < 10 > 10 > 10 < 100 < 100 > 100 > 100 Table 12: Smart Trigger Test Record Generator Post Trigger Delay (A )
  • Page 96 LT584 & LT374/372 & LT354 & LT264/262 Test Record This page intentionally left blank Rev. D...

  • Page 97: Maintenance

    Maintenance Introduction This section contains information necessary to maintain, calibrate and troubleshoot the LeCroy waverunner digital storage oscilloscopes. 6.1.1 Safety Precautions symbol used in this manual indicates dangers that could result in personal injury. symbol used in this manual identify conditions or practices that could damage the instrument.
  • Page 98 Software Update Procedure 6.2.1 Upgrading Firmware LeCroy Corporation has a policy of continually improving and upgrading its products. The LT Series instrument is equipped with flash Prom on processor board. The software is updated to the latest version using either the floppy disk drive or the memory card interface.

  • Page 99: Software Options

    • When the scope boots enter the “Show Status“ , “System“ menu to verify that version 8.1.1 or later is running. • Insert the Card created above into the PCMCIA Slot. • Select “Utilities“, “Special Modes“, “Firmware Update“, “Update from Card“ . •...
  • Page 100 LeCroy program " LeCalsoft " under GPIB remote control. To run " LeCalsoft " type SKP.exe, in the main menu type S, and follow the instructions, use five digits to enter the serial number ( i.e.
  • Page 101 This section does not include the other manual adjustments of Power Board, and does not contain any instructions or descriptions about Power Board calibration. Power Board adjustments required complex test set-up. For information on the availability of the tester, contact your nearest LeCroy service centre. Troubleshooting and Flow Charts 6.5.1 Introduction...

  • Page 102: Initial Troubleshooting Chart

    • Open the fuse box by inserting a small flat screwdriver under the plastic cover and remove the fuse carrier from the holder • Remove the fuse and replace it with the proper type: T6.3 A / 250 V, LeCroy part number: 433 162 630 6.5.3 Initial Troubleshooting Chart...
  • Page 103 Fan Problem See Section 6.5.4 Power Supply See Section 6.5.5 Problem Display Problem See Section 6.5.6 Abnormal Image on See Section 6.5.7 Screen Front Panel Controls Do not See Section 6.5.8 Operate Plug in the Power Remote Control Cord and Turn on GPIB or RS232 See Section 6.5.9 the waverunner...

  • Page 104: Fan Problem

    6.5.4 Fan Problem Start Main AC Line Repair as Voltage 90 to 250V Needed. OK ? AC Power Cord Repair Power OK ? Code. DSO Input Line See Power Fuses OK ? Supply Problem Section 6.5.5. Is +12V from See Power Power Supply to Supply Problem Fan Correct ?
  • Page 105 6.5.5 Power Supply Voltage Problem Start AC Line Repair as Need. Voltage 90 to 250V OK ? AC Power Repair Power Cord OK ? Cord. Is Fan-mortor Is Power Is AC Line Stopped. Supply Load Fuse on Rear Shorted ? Panel Opened.

  • Page 106: Display Problem

    6.5.6 Display Problem Start Are Power Supply See Power Voltages on CPU Board P11 Supply Problem. Correct Do a General Reset. Are Power Supply Replace CPU Voltages on CPU Board J1 #28-30 board. Correct ? Is External VGA Replace CPU Video Correct ? board.
  • Page 107 6.5.7 Front Panel Controls Do not Operate Start Are Power Supply See Power Voltages on CPU Board P11 Supply Problem. Correct ? Do a General Reset. Are Power Supply Replace CPU Voltages Correct on CPU Board J6 board. #4,5 ? Is Flat Cable to Reseat or Panel Correctly...
  • Page 108 6.5.8 Remote Control GPIB or RS232 Problem Start Is DSO Change Setting GPIB/RS232 in DSO Utilities Setup Correct ? Main Menu. Is Appropriate Change Device Device Settings Settings. Correct ? Is RS232 Cable Check RS232 Configuration Cable Pinout Correct ? from DSO to Device.
  • Page 109 6.5.9 Floppy Disk Drive Problem Start Is Cable to Floppy Fix Flat Cable Disk Drive Properly from CPU board Installed ? to Floppy Disk Drive. Do a General Reset. Replace Floppy Disk Drive. Replace CPU board. Maintenance 6-13...
  • Page 110 6.5.10 Performance Verification Fails Start See Power Supply Are Power Supply Voltages Correct Problem. at 21J1,2,3 on CPU ? Are Power Supply Check 7 to 10IC2, 3, Voltages Correct 4, 5. at HAD626? Is Channel 1, 2, 3 Check 2 to 6RL1, &...
  • Page 111 6.5.11 Graphic Printer Problem Start Is Cable to Printer Fix Flat Cable Controller Properly from CPU Board Installed ? to Printer Controller Board. Are Power Supply Check Power Voltages on Printer Controller P4 Cable From Correct ? Power Supply to Printer Controller Replace Printer See Power...
  • Page 112 6.5.12 Centronics Problem Start Check Setting in DSO Utilites Menu, Hard Copy Setup, Output to Centronics. Check Appropriate Protocol. Do a General Reset. Replace CPU Board. 6-16 Maintenance...
  • Page 113 6.5.13 Hard Disk Drive Problem Start Check Setting in DSO Utilites Menu, Hard Copy Setup, Output to Hard Disk. Replace Hard Disk Drive. Replace CPU Board. Maintenance 6-17...
  • Page 114 6-18 Maintenance...
  • Page 115 Mechanical Parts & Removal 7. Mechanical Parts & Removal A. Removal of the Upper Cover Assembly (with printer) • A1, A2 : Remove the nine M3 x 6 screws with nylon washer (one on the top/each two on the right and left sides/four on the rear). •...
  • Page 116 [A6] [A7] Upper Cover Replaceable Parts Item IWATSU Part Number Quantity Description MKB130062 Screw M3x6 MPW930000 Washer W-3, nylon KBA787311 STD TOP COVER LE MTH000791 Handle THA-238-L260 UL-I MGA000721 Side Foot 5475 UL-I KPL142611 Cushion 3, 4, 5, 6 21302-5676 LT UPPER COVER ASSY 7-2 Mechanical Parts &...
  • Page 117 [A8] [A9] Upper Cover (with a built-inprinter) Replaceable Parts Item IWATSU Part Number Quantity Description MKB130062 Screw M3x6 MPW930000 Washer W-3, nylon KBA786321 TOP COVERL E MTH000791 Handle THA-238-L260 UL-I MGA000721 Side Foot 5475 UL-I KPL142611 Cushion KCM141411 PRINTER COVER FRAME UL-I KCM141311 PRINTER COVER UL-I 3, 4, 5,...
  • Page 118 B. Removal of the Bottom Cover Assembly • Remove the upper cover. • Remove the five M3 x 6 screws (with nylon washer, 3 on the bottom/2 on the rear). Bottom Cover Replaceable Parts Item IWATSU Part Number Quantity Description KBA786921 BOTTOM COVER LE KAS137811...
  • Page 119 C. Removal of the Printer Assembly Remove the upper cover. • C1 : Remove the four M3 x 6 screws (2 on the TOP FRAME L/2 on the center frame). • C2 : Remove the CPU J7/FFC cable. • C2 : Remove the POWER BOARD CN6/power 3P cable. [C1] [C3] [C2 ] View as the rear side of the printer unit lifted...
  • Page 120 Printer Parts Item IWATSU Part Number Quantity Description MKB130062 Screw KB(+)3X6S(NIP) DZB992361 PRINTER FTP-642MCL001 KHB189311 PRINTER POWER CABLE UL-I KHB189611 PRINTER HEAD CABLE UL-I AHB202811 FFC-26P-L140-P1/CPU KCM141211 PRINTER CASE UL-I MFA001471 TL-304-1 KBA785511 PRINTER BASE UNIT MSQ901661 Screw TT2(+)3X8S KBA786211 CENTER FRAME MKB130062 Screw KB(+)3X6S(NIP)
  • Page 121 D. Removal of the Floppy Assembly Remove the upper and bottom covers. • D1 : Remove the CPU BOARD J2/FFC cable from the CPU. • D1 : Remove two M3 x 6 screws on the TOP FRAME R and FRONT FRAME A. [D1] [D2] Floppy Replaceable Parts...
  • Page 122 E. Removal of the CPU Board Remove the upper and bottom covers. Remove the printer and floppy. Remove the four M3 x 6 screws from the right and left frame. [Note] Remove the cables on the CPU Board and next the screws on it. •...
  • Page 123 [E2] [E3] CPU Board Replaceable Parts Item IWATSU Part Number Quantity Description MKB130062 18.0 Screw M3x6 21302-5610 CPU BOARD ASSY KBA784421 TOP FRAME L KBA784511 TOP FRAME R Mechanical Part & Removal 7-9...
  • Page 124 F. Removal of the Main Board Remove the upper and bottom covers. [Note] Remove the cables on the Main Board and next the screws on it. • F1 a/b : Remove four cables (20J1/26pin, 20J4/22pin, 20J2/26pin, 20J3/22pin).). • F1 a/b : Remove the Signal out connector (16J2). •...
  • Page 125 [F1b] M3x6 20J4 20J3 20J1 20J2 21J3 16J2 Mechanical Part & Removal 7-11...
  • Page 126 [F2] 7-12 Mechanical Parts & Removal...
  • Page 127 G. Removal of the Power Supply Assembly Remove the upper and bottom covers. Remove the processor assembly. Remove the main assembly. • G1 : Remove the Harnessing belt on the main frame. • G2 : Remove the connector (CN7) on the Power board from the fan. •...
  • Page 128 H. Removal of the Front Panel Assembly Remove the upper and bottom covers. Remove the processor assembly. Remove the main assembly. Remove the power supply assembly. • H1 : Remove the two M3x6 screws that secure the front panel assembly and the main frame.
  • Page 129 [H1] H1 Replaceable Parts Item IWATSU Part Number Quantity Description KBA784011 MAIN FRAME KBA784911 SIDE FRAME L KBA785011 SIDE FRAME R MKD130061 Screw M3x6 MZT903161 Metallic support PSC60 [H2] H2 Replaceable Parts Item IWATSU Part Number Quantity Description KPL143211 INVERTER PLATE UL-1 KBA784121 FRONT FRAME A KBA784211...
  • Page 130 LCD Assembly [H3] LQ084VIDG21 [H4] [H5] H3 to H5 Replaceable Parts Item IWATSU Part Number Quantity Description MSQ903511 Screw PKB 2.5x8S 21302-5615 LCD CONNECTOR BOARD UL-M 21302-5680 LT LCD UNIT See Fig [H5] 7-16 Mechanical Parts & Removal...
  • Page 131 FRONT PANEL ASSY [H6] 3 Gasket [H7] [H8] 2:KEY RUBBER 5:KNOB-D9 6:KNOB-D12 5:KNOB-D9 6:KNOB-D12 Mechanical Part & Removal 7-17...
  • Page 132 LT344/224 FRONT PANEL ASSY Item IWATSU Part Number Quantity Description KCM140911 BEZEL FND14 UL-1 KGM029711 FND14 KEY PUBBER UL-I MZT007871 GASKET UC-3E0564 UL-I KPA219011 LT344 CONTROL PANEL UL-I KCM141021 KNOBE-D9 UL-I KCM141121 KNOBE-D12 UL-I 21302-5613 PANEL & KEY BOARD See Fig [H7] 1 to 7 21302-5678 LTxx4 FRONT PANEL(4CH)
  • Page 133 Removal of the Rear Panel Assembly Remove the upper and bottom covers. Remove the processor assembly. Remove the main assembly. Remove the power supply assembly. • I1 : Remove the rear panel assembly and four M3 x 6 screws from the main frame. •...
  • Page 134 Assembly Note : • Fan : Check the fan cable direction. Note the air flow, the fan extracts air from the unit and expels it. • Feet : Check that the lower feet and rear cord rack are aligned and properly tightened before re-assembly.
  • Page 135 2L15 +12V(FE1) -5V(FE1) +12V 26mAmax -5V(CH1) 2L18 +12V(FE1) BLM21P221 -5V(FE1) +12V(CH1) +12V 2Q14 2C28 16IC2 349mAmax 0.01u(S) BLM21P221 2SC2712 16J5 2C109 2C107 2R133 INT CAL 2L16 +5V(FE1) 2R97 0.01u(S) BLM21A121F +5V(CH1) CH1 CAL SIG 2.2k 2R92 2C49 BLM21P221 +5V(FE1) 0.1u(S) 62(S) 461.4mAmax 2C18...
  • Page 136 3L15 +12V(FE2) -5V(FE2) +12V 26mAmax -5V(CH2) 3L18 +12V(FE2) BLM21P221 -5V(FE2) +12V(CH2) +12V 3C28 16IC2 349mAmax 0.01u(S) BLM21P221 16J5 3R133 3C109 3C107 INT CAL 3L16 +5V(FE2) 3R97 0.01u(S) BLM21A121F +5V(CH2) CH2 CAL SIG 2.2k 3R92 3C49 BLM21P221 +5V(FE2) 62(S) 0.1u(S) 461.4mAmax 3Q14 3C18 2SC2712...
  • Page 137 4L15 +12V(FE3) -5V(FE3) +12V 26mAmax -5V(CH3) 4L18 +12V(FE3) BLM21P221 -5V(FE3) +12V(CH3) +12V 4C28 16IC2 349mAmax 0.01u(S) BLM21P221 16J6 4R133 4C109 4C107 INT CAL 4L16 +5V(FE3) 0.01u(S) 4R97 BLM21A121F +5V(CH3) CH3 CAL SIG 4R92 2.2k 4Q14 4C49 BLM21P221 +5V(FE3) 62(S) 461.4mAmax 2SC2712 0.1u(S) 4C18...
  • Page 138 +12V(FE4) -5V(FE4) +12V 26mAmax -5V(CH4) 5L15 +12V(FE4) -5V(FE4) 5C28 +12V(CH4) +12V 16IC2 BLM21P221 349mAmax 0.01u(S) 16J6 5R133 5L18 5C109 5C107 INT CAL +5V(FE4) 0.01u(S) 5R97 BLM21P221 +5V(CH4) CH4 CAL SIG BLM21A121F 5R92 5L16 2.2k 5Q14 5C49 +5V(FE4) 62(S) BLM21P221 461.4mAmax 2SC2712 0.1u(S) 5C18...
  • Page 139 +12V +12V 6R97 6C28 6R110 16IC2 1.5k 0.01u 6Q14 2SC2712 INT CAL 6C94 20IC1 1000p HSM124S 6R91 6R68 6R69 EXT HYST BLM21A121F 6C19 510B 6R92 4.7kD 6R14 6C36 0.01u 6C18 6R98 6Q12 6R109 0.1u 8.2k 6R44 2SA1162 2SA1162 18IC13 6RL2A 6RL3A 6R58 6C21...
  • Page 140 8R59 +12V 8R58 8C47 8C49 8C50 8C40 8C42 8C75 BLM21A121F 8C30 14IC12 8C45 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) +2.5V 1u(1E) 0.1u(S) 0.1u(S) SYSCLK12 8C46 8C48 8R63 8C76 8C31 8C74 8C27 8C41 8C44 8C28 *SYSCLK12 0.1u(S) 10u(6.3V) 0.1u(S) 0.1u(S) 1u(1E) 0.1u(S) 10u(6.3V) 8IC9...
  • Page 141 9R57 +12V 9R56 9L12 9C47 9C49 9C50 9C40 9C42 9C75 BLM21A121F 9C45 9C30 14IC12 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) 1u(1E) 0.1u(S) 0.1u(S) 0.1u(S) +2.5V 0.1u(S) SYSCLK12 9C74 9C46 9C48 9C27 9C41 9R61 9C76 9C44 9C28 9C31 *SYSCLK12 0.1u(S) 10u(6.3V) 0.1u(S) 0.1u(S) 1u(1E) 0.1u(S) 9IC9...
  • Page 142 10R63 +12V 10R62 10L6 BLM21A121F 10C2 10C47 10C49 10C50 10C40 10C42 10C75 10C45 10C30 14IC12 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) 1u(1E) 0.1u(S) 0.1u(S) +2.5V 0.1u(S) SYSCLK34 10C74 10C46 10C48 10C27 10C41 10R67 10C76 10C44 10C28 10C31 *SYSCLK34 0.1u(S) 10u(6.3V) 0.1u(S) 0.1u(S) 1u(1E) 0.1u(S)
  • Page 143 11R57 +12V 11R56 11L12 11C47 11C49 11C50 11C40 11C42 BLM21A121F 11C45 11C30 14IC12 11C2 11C75 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) 0.1u(S) +2.5V 1u(1E) 0.1u(S) 0.1u(S) SYSCLK34 11C74 11C46 11C48 11C27 11C41 11R61 11C76 11C44 11C28 11C31 *SYSCLK34 11R1 11IC9 1u(1E) 0.1u(S) 10u(6.3V) 0.1u(S)
  • Page 144 12R1 51(S) 12R12 51(S) 12C12 +12V +12V(ANA) 0.01u 12R2 51(S) 12R13 51(S) 12C1 -12V -12V(ANA) 0.01u(S) 19IC1 12R3 12R14 51(S) 51(S) 19IC1 12C14 A8B[0..5] D8B[0..7] +5V(ANA) 0.01u 12C71 12R4 12R15 51(S) 51(S) 19IC1 12C3 1u(1E) *MST CS -5V(ANA) 0.01u(S) 12R5 51(S) 12R16 51(S)
  • Page 145 +12V +12V(ANA) +12V -12V -12V(ANA) +5V(ANA) PAL/SECAM : 625Line/50Hz/2:1 13R16 100k NTSC : 525Line/60Hz/2:1 -5V(ANA) TV POLA +12V 20mAmax 13C51 13Q5A +12V 7.5mAmax 13C54 0.1u IMX3 +12V 1000p 13IC1 uPC1663G 13C57 13R10 13R14 IMX3 0.1u 3.9k 13Q5B 13C53 13R24 13R12 0.1u 220k 13R1...
  • Page 146 19IC1 D8B[0..7] 14R61 D8B[0..7] 47(S) MCLR MCLR FDCK FDCK 14R12 ITBUSY 14R13 47(S) ITCK ITCK 47(S) RTCK RTCK TRIGD TRIGD TSCK TSCK 20IC24 TBCK TBCK 14R14 *RESET 14C64 14C65 47(S) 14C66 +5Vmtb 14R60 14L2 0.1u 0.1u 0.1u(S) 14C63 14Q2A +5Vmcg MVY220u(16V) IMH1 14L6...
  • Page 147 +12V 15C16 0.1u 15R80 +12V 220kB +12V 15C90 15R15 15R81 15R18 +5.2V+/-0.5V 220kB +/-0.5uA 15R6 15C5 15R5 0.1u 0.1u 15R82 15R73 240kB 1.0M +12V 15Q5 2SC3583 15C88 +12V 8.2k 0.1u 0/+4.0V 15R1 15R13 15R17 TDC ADJ +5.2V 20IC1 15IC1A 15R10 10uA 4.7kD uPC812G...
  • Page 148 +5.1V 16C90 +5Vd +5V(DIG) 1u(1E) 16L10 BLM21P221 16R44 16L9 16C95 16C96 16C97 16C93 BLM21P221 16C107 1000p 120p NUC(S) NUC(S) 1u(1E) 16C108 1u(1E) 16C106 16C87 16C88 0.01u(S) 0.1u(S) 0.1u(S) 16L5 16L6 16C92 16R46 16R39 106mVpp 16C89 0.22uH 0.015u(K) 100(S) 16C101 CH1 CAL SIG 0.1u(S) 16R42 16J3...
  • Page 149 17C50 1u(1E) +12V +12V 17IC2 DAC712UK 17C53 17C55 20IC24 1u(1E) 17R16 1.2kB *RESET _RESET D15MSB +VCC 0.1u 15mA 19IC5 MB SRDAT P70/SI2 19IC1 17R14 17C16 DCG SRDO P71/SO2 19IC5 100p DCG SRCLK P72/SCK2 +/-10V 18IC1,2,3 VOUT 20IC21 +/-4.0V DCG CHARGE OFFSET ADJ : +/-30mV DCG CHGST P03/INTP3...
  • Page 150 17IC1 DCG SA0 17IC1 DCG SA1 17IC1 DCG SA2 +12V +12V 18C60 18C68 18C1 18C17 0.1u 0.1u 0.1u(J) 0.1u(K) 18R32 6IC4 EXT TRIG LVL1 18IC10A 18IC13A TL084CNS TL084CNS 18IC10B 18IC13B TL084CNS TL084CNS 18C2 18C18 18C61 18C69 0.1u(K) 0.1u(K) 18R1 18R33 6IC4 EXT TRIG LVL2 0.1u...
  • Page 151 MDB7[7..0] +2.5V MDB6[7..0] +3.3V 19C27 19C4 19C6 19C8 19C11 19C13 19C15 19C25 19C41 19L1 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u MVY330u(6.3V) +2.5V +3.3V +2.5V(DIG) +2.5V(RPM) +3.3V(DIG) +3.3V(RPM) BLM21P221 19L2 BLM21P221 19IC1 +5Va +5V(ANA) 19C3 19C28 19C5 19C7 19C9 19C10 19C12 19C14...
  • Page 152 19IC1 19IC7 +5Va MD[0..31] 19IC1 20C15 20C12 20C7 MD[0..31] FE SRCLK 0.1u 0.1u 0.1u *SR LD FE SRDAT MA[0..13] 20J1 52808-2691 20RA1 from/to 19IC1 220-4 CPU BOARD MD31 19IC6 20C9 MD30 SR A0 2IC3/5 10u(6.3V) 8IC5 LDSEL SRDAT CH1 FE LD CH1 ADGAN 2IC4 8IC5...
  • Page 153 13IC5 LINE SIG 21J1 +5V(ANA) from/to POWER SW POWER BOARD +5V(ANA) +5V(ANA) -5V(ANA) 21C95 21L1 21L33 +12V(ANA) MVY220u(16V) +5V(DIG) -12V(ANA) +2.5V(DIG) BLM21P221 BL02RN2 21L2 5267-07A +5V(DIG) +5V input molex 21L12 from 21J2 8.51Amax BL02RN2 BLM21P221 POWER BOARD 21C3 1u(1E) 21C1 21C18 21C17 21C16...
  • Page 154 Mechanical Part & Removal 7-21...
  • Page 155 700 Chestnut Ridge Road Chestnut Ridge, NY 10977-6499 Tel: (845) 425-2000 Fax: (845) 425-8967 http://www.lecroy.com Copyright © October 2001. LeCroy is a registered trade-mark of LeCroy Corporation. All rights reserved. Information in this publication supersedes all earlier versions. Specifications subject to change.

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