Manuale d’uso / di manutenzione del prodotto TDS544A del fabbricante Tektronix
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TDS 520A, 524A, 540A, & 544A Digitizing Oscilloscopes 070-8712-01 Performance V erification Please check for change information at the rear of this manual.
Instrument Serial Numbers Each instrument manufactured by T ektronix has a serial number on a panel insert or tag, or stamped on the chassis. The first letter in the serial number designates the country of manufacture. The last five digits of the serial number are assigned sequentially and are unique to each instrument.
W ARRANTY T ektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment.
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TDS 520A, 524A, 540A, & 544A Performance V erification W elcome This is the Performance V erification for the TDS 520A, 524A, 540A, and 544A Oscilloscope. It contains procedures suitable for determining if the instrument functions, was adjusted properly , and meets the performance characteristics as warranted.
Welcome Welcome.
TDS 520A, 524A, 540A, & 544A Performance V erification T able of Contents Safety Summary v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performance V erification Procedures Brief Procedures 1-1 . . . . .
T able of Contents Contents Specifications Specifications 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Product Description 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . User Interface 2-2 .
TDS 620A, 640A, & 644A Performance V erification Safety Summary Please take a moment to review these safety precautions. They are provided for your protection and to prevent damage to the digitizing oscilloscope. This safety information applies to all operators and service personnel.
Safety Summary Safety Observe all of these precautions to ensure your personal safety and to pre- vent damage to either the digitizing oscilloscope or equipment connected to it.
Performance V erification Procedures.
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TDS 520A, 524A, 540A, & 544A Performance V erification Brief Procedures The Self T ests use internal routines to confirm basic functionality and proper adjustment.
Brief Procedures Performance V erification Procedures Throughout these procedures the following conventions apply: Each test procedure uses the following general format: T itle of T est Equipment Required Prerequisites Procedure Each procedure consists of as many steps, substeps, and subparts as required to do the test.
Brief Procedures TDS 520A, 524A, 540A, & 544A Performance V erification Refer to Figure 1-1: “Main menu” refers to the menu that labels the seven menu buttons under the display; “side menu” refers to the menu that labels the five buttons to the right of the display .
Brief Procedures Performance V erification Procedures This procedure uses internal routines to verify that this oscilloscope functions and was adjusted properly . No test equipment or hookups are required. V erify Internal Adjustment, Self Compensation, and Diagnostics Equipment Required: None.
Brief Procedures TDS 520A, 524A, 540A, & 544A Performance V erification First, the CAL menu is displayed. Second, the adjustment sections are verified.
Brief Procedures Performance V erification Procedures The purpose of these procedures is to confirm that this oscilloscope functions properly . The only equipment required is one of the standard-accessory probes and, to check the file system, a 3.5 inch.
Brief Procedures TDS 520A, 524A, 540A, & 544A Performance V erification b. Initialize the oscilloscope: Press save/recall SETUP . Press the main-menu button Recall Factory Setup .
Brief Procedures Performance V erification Procedures Hi Res mode displays an actively acquiring waveform on-screen with the noise that was present in Sample mode reduced. Envelope mode displays an actively acquiring waveform on- screen with the noise displayed.
Brief Procedures TDS 520A, 524A, 540A, & 544A Performance V erification e. T est all channels: Repeat substeps a through d to verify AUX 2. 4. Remove the test hookup: Disconnect the probe from the channel input and the probe-compensation terminals.
Brief Procedures Performance V erification Procedures V erify the Main and Delayed T rigger Systems Equipment Required: One P6139A probe. Prerequisites: None. Procedure: 1. Install the test hookup and preset the oscilloscope controls: a. Hook up the signal source: Install the probe on CH 1 .
Brief Procedures TDS 520A, 524A, 540A, & 544A Performance V erification b. Select the delayed trigger level menu: Press SHIFT ; then press DELA YED TRIG .
Brief Procedures Performance V erification Procedures V erify the File System (Optional on TDS 520A and 540A) Equipment Required: One P6139A probe and one 720 K or 1.44 Mbyte, 3.5 inch DOS compatible disk. Y ou can use a disk of your own or you can use the Programming Examples Software 3.
Brief Procedures TDS 520A, 524A, 540A, & 544A Performance V erification Press the side-menu button Save T o Selected File . 2. V erify the file system works: Press AUTOSET to restore the 500 s time base and the five cycle waveform. Press the main-menu button Recall Saved Setup ; then press the side-menu button From File .
Brief Procedures Performance V erification Procedures.
TDS 520A, 524A, 540A, & 544A Performance V erification Performance T ests This subsection contains a collection of procedures for checking that TDS 520A, 524A, 540A, and 544A Digitizing Oscilloscopes perform as warranted.
Performance T ests Performance V erification Procedures T able 1-1: T est Equipment Item Number and Description Minimum Requirements Example Purpose 1 Attenuator ,10X (three required) Ratio: 10X; impe.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification T able 1-1: T est Equipment (Cont.) Item Number and Description Purpose Example Minimum Requirements 14 Probe, 10X, in- cl.
Performance T ests Performance V erification Procedures.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification T est Record Photocopy the next four pages and use them to record the performance test results for your instrument.
Performance T ests Performance V erification Procedures TDS 500A T est Record (Cont.) Instrument Serial Number: Certificate Number: T emperature: RH %: Date of Calibration: T echnician: Performance T est Maximum Outgoing Incoming Minimum CH2 200 mV V ert scale setting, –5 Div position setting + 1 1.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification TDS 500A T est Record (Cont.) Instrument Serial Number: Certificate Number: T emperature: RH %: Date of Calibration: T ech.
Performance T ests Performance V erification Procedures TDS 500A T est Record (Cont.) Instrument Serial Number: Certificate Number: T emperature: RH %: Date of Calibration: T echnician: Performance T est Maximum Outgoing Incoming Minimum Probe Compensator Output Signal Frequency (CH1 Freq.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification These procedures check those characteristics that relate to the signal-acqui- sition system and are listed as checked under Warranted Characteristics in Section 2, Specifications.
Performance T ests Performance V erification Procedures Follow these rules to match this procedure to the model of the oscillo- scope under test: Models TDS 540A, 544A Only —When using T able 1-2 to test CH 1—CH 4; ignore the columns for AUX 1 & AUX 2 settings and limits.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Then read the offset relative to ground reference. Align the active cursor to the DC baseline (no input).
Performance T ests Performance V erification Procedures Procedure: 1. Install the test hookup and preset the instrument controls (see Fig- ure 1-5): HI LO Output Sense DC Calibrator 50 Coaxial Cables Dual Banana to BNC Adapters BNC T Connector Figure 1-5: Initial T est Hookup a.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification REV JUL Y 93 Press the main-menu button Graticule ; then press the side-menu button Frame .
Performance T ests Performance V erification Procedures Third read the results of the DC measurement here. Second align the second cursor to the DC test level that you input. First align a cursor to the DC baseline (no input). Figure 1-6: Measurement of the DC Accuracy for Delta Measurements e.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification 4. Confirm input channels are within limits for DC accuracy at maximum offset and position: Do the following substeps — test CH 1 first, skipping substep a since CH 1 is already selected from step 3.
Performance T ests Performance V erification Procedures T able 1-4: DC Accuracy: AUX 1–AUX 2 Scale Setting Positio n Setting (Divs) Offset Setting Generator Setting Accuracy Limits 100 mV –5 +0.5 V +1.3 V +1.271 V to +1.329 V +5 –0.5 V –1.3 V –1.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Third, turn on the Measurement called mean and read the results here. Second, input a DC level equal to the offset plus 3 divisions. First set vertical and position offsets to maximum (no input).
Performance T ests Performance V erification Procedures Check Analog Bandwidth Equipment Required: One high-frequency leveled sine wave generator and its leveling head (Item 1 1), plus two10X attenuators (Item 1). Prerequisites: See page 1-15. Procedure: 1.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification 2. Confirm the input channels are within limits for analog bandwidth: Do the following substeps — test CH 1 first, skipping substeps a and b since CH 1 is already set up for testing from step 1.
Performance T ests Performance V erification Procedures e. Display the test signal: Do the following subparts to first display the reference signal and then the test signal.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification g. Check against limits: CHECK that the Pk-Pk readout on screen is within the limits listed in T able 1-5 for the current vertical scale setting . When finished checking, set the horizontal SCALE back to the 50 ns setting.
Performance T ests Performance V erification Procedures Check Delay Between Channels Equipment Required: One medium-frequency leveled sine-wave generator (Item 10), one precision, 50 coaxial cable (Item 4), one 50 terminator (Item 3), and a dual-input-coupler (Item 7).
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Connect the coupler to both CH 1 and CH 2 . 2. Confirm CH 1 through CH 4 (CH 2 for 520A and 524A) are within limits for channel delay: a. Set up the generator: Set the generator frequency to 250 MHz and the amplitude for about five divisions in CH 1.
Performance T ests Performance V erification Procedures Read the measurement results at the : cursor readout, not the @: readout on screen. Fourth, read the results here. Second, identify the time reference points of those waveforms. First, display the live/reference waveforms for channels.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification These procedures check those characteristics that relate to the Main and Delayed time base system and are listed as checked under Warranted Char- acteristics in Section 2, Specifications.
Performance T ests Performance V erification Procedures Press TRIGGER MENU ; then press the main-menu button Mode & Holdoff . Now press the side-menu button Normal . Press SET LEVEL TO 50% . Press horizontal MENU . Press the main-menu button Record Length ; then press the side-menu button 1000 points in 20 divs .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification c. Check long-term sample rate and delay time accuracies against limits: CHECK that the rising edge of the marker crosses the center horizontal graticule line at a point within center graticule.
Performance T ests Performance V erification Procedures These procedures check those characteristics that relate to the Main and Delayed trigger systems and are listed as checked under Warranted Charac- teristics in Section 2, Specifications.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification 2. Confirm the trigger system is within time-accuracy limits for pulse-glitch or pulse-width triggering (Horizontal Scale 1 s) : a. Display the test signal: Set the output of the sine wave generator for a 100 MHz, five-division sine wave on screen.
Performance T ests Performance V erification Procedures First, the upper and lower limits are set so the test waveform triggers within limits. Second, a limit (here, the lower limit) is increased until triggering stops. Figure 1-15: Measurement of Time Accuracy for Pulse and Glitch T riggering 3.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Press the side-menu button Upper Limit ; then use the general purpose knob to slowly decrease the the Upper Limit readout until triggering is lost. CHECK that the Upper Limit readout is within 1 s to 3 s, inclusive.
Performance T ests Performance V erification Procedures b. Initialize the oscilloscope: Press save/recall Setup . Press the main-menu button Recall Factory Setup . Press the side-menu button OK Confirm Factory Init . c. Select Delayed T riggerable: Press HORIZONT AL MENU .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification First, set vertical offset to maximum and vertical position to –3 divisions. Second, set input equal to the offset to return the DC level to the screen. Third, push SET LEVEL to 50% and check the results in the main menu under “Level.
Performance T ests Performance V erification Procedures CHECK that the Level readout in the side menu is within 9.940 V to 10.060 V , inclusive. 4. Disconnect the hookup: a. First set the output of the DC calibration generator to 0 volts. b. Then disconnect the cable from the generator output at the input connector of CH 1 .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification c. Hook up the test-signal source: Medium Frequency Sine Wave Generator Output 50 Coaxial Cables Figure 1-18: Initial T es.
Performance T ests Performance V erification Procedures Press the main-menu button High-Low Setup ; then press the side-menu button Min-Max . Press the main-menu button Select Measrmnt for Ch1 . Press the side-menu button –more– until Amplitude appears in the side menu (its icon is shown at the left).
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification First, set a signal with an amplitude at the minimum trigger sensitivity .
Performance T ests Performance V erification Procedures 3. Confirm the AUX T rigger input: a. Display the test signal: Remove the 10X attenuator and reconnect the cable to CH 1 . Set the test signal amplitude for about 2.5 divisions on screen. Now fine adjust the generator output until the CH 1 Amplitude readout indicates the amplitude is 250 mV .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Set the test signal amplitude for about five divisions on screen. Now fine adjust the generator output until the CH 1 Amplitude readout indicates the amplitude is 500 mV . (Readout may fluctu- ate around 500 mV .
Performance T ests Performance V erification Procedures The procedure that follows checks those characteristics of the output signals that are listed as checked under Warranted Characteristics in Section 2, Specifications. The oscilloscope outputs these signals at its front and rear panels.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification d. Modify the initialized front-panel control settings: Set the horizontal SCALE to 200 s. Press SHIFT ; then ACQUIRE MENU . Press the main-menu button Mode . Then press the side-menu button Hi Res .
Performance T ests Performance V erification Procedures c. Check Main T rigger output against limits: CHECK that the Ch2 High readout is 2.5 volts and that the Ch2 Low readout is 700 mV . Press VERTICAL MENU ; then press the main-menu button Coupling .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification b. Check against limits: CHECK that the readout Ch2 Pk-Pk is between 90 mV and 1 10 mV , inclusive. Press VERTICAL MENU ; then press the side-menu button to toggle to the 50 setting.
Performance T ests Performance V erification Procedures Press the side-menu button OK Confirm Factory Init . c. Modify the initialized front-panel control settings: Set the vertical SCALE to 100 mV as required. Set the horizontal SCALE to 200 s. Press Set Level to 50% and use the VERTICAL POSITION knob to center the display on screen.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification b. Check against limits: CHECK that the CH 1 Freq readout is within 950 Hz to 1.050 kHz, inclusive. 3. Confirm that the Probe Compensator signal is within limits for amplitude: a.
Performance T ests Performance V erification Procedures Adjust the output of DC calibration generator until it precisely overlaps the top (upper) level of the stored probe compensation signal. (This value will be near 500 mV .) Record the setting of the DC generator .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Equipment Required: P AL signal source (Item 18), 60 Hz. sine wave gener- ator (Item 19), pulse generator (Item 20), 75 Cable (Item 21), 75 termina- tor (Item 22), 50 cable (Item 4), 50 terminator (Item 3).
Performance T ests Performance V erification Procedures 3. Check Jitter vs. Signal Amplitude a. Setup equipment for Jitter T est (See Figure 1-27). Connect one of the rear panel composite outputs marked COMPST on the TSG121 through a 75 cable and a 75 terminator to the oscilloscope CH1 input.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification CONFIRM that the TRIG’D LED is lit and the waveform is dis- played on screen. c. Press SHIFT ; then ACQUIRE MENU . d. Press the main-menu Mode . e. Select the side-menu A verage .
Performance T ests Performance V erification Procedures STOP shows the test is complete Figure 1-29: Jitter T est When Completed w. Press the main-menu Limit T est Setup . x. T oggle the side-menu Ring Bell if Condition Met to OFF . y. T oggle the side-menu Limit T est to OFF .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification m. CONFIRM that the TRIG’D LED stays on and that the waveform on screen is stable. ie; does not move horizontally or vertically . Also, CONFIRM that the waveform on the screen has one positive pulse and a number of negative pulses (See Figure 1-30).
Performance T ests Performance V erification Procedures Positive pulse Negative pulses Figure 1-31: T riggered Signal Range T est – 75 mV p. Disconnect all test equipment (TSG121) from the digitizing oscillo- scope. 5. Check 60 Hz Rejection. a. Setup oscilloscope for 60 Hz Rejection T est.
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification 50 Cable Signal Generator SG 502 Figure 1-32: 60 Hz Rejection T est Hookup Adjust the SG 502 for three vertical divisions of 60 Hz signal (See Figure 1-33). The signal will not be triggered.
Performance T ests Performance V erification Procedures Press VERTICAL MENU . If needed, press the main-menu Fine Scale . Use the keypad to set fine scale to 500 mV (press 500 , SHIFT , m , then ENTER ).
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Figure 1-35: 60 Hz Rejection T est Result Disconnect all test equipment from the digitizing oscilloscope. 6. Check Line Count Accuracy . a. Setup oscilloscope for Line Count Accuracy T est.
Performance T ests Performance V erification Procedures 75 Cable 75 T erminator P AL Signal Source TSG121 COMPST Figure 1-36: Line Count Accuracy T est Hookup Press the main-menu T rigger Position . Press the side-menu to Set to 50% . Press the main-menu Horiz Pos .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Press the side-menu V Bars . Using the General Purpose knob, place the left cursor directly over the trigger “T” icon. Press SELECT . T urn the General Purpose knob to adjust the right cursor for a cursor delta reading of 6.
Performance T ests Performance V erification Procedures Press the side-menu Field Rate . Use the keypad to set the field rate to 60.05 Hz (press 60.05 , then ENTER ). Press the side-menu Lines . Use the keypad to set the field rate to 793 lines (press 793 , then ENTER ).
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification c. Check Sync Duty Cycle Connect the pulse generator (PG502) through a 50 cable and a 50 terminator to the oscilloscope CH1 input (See Figure 1-39).
Performance T ests Performance V erification Procedures Figure 1-40: Sync Duty Cycle T est: One-Div Neg Pulse W aveform T urn the pulse generator PULSE DURA TION variable control to adjust the negative pulse so the oscilloscope CH1 – Width measurement displays 400ns +/–10 ns .
Performance T ests TDS 520A, 524A, 540A, & 544A Performance V erification Figure 1-41: Sync Duty Cycle T est: Critically Adjusted Pulse Press TRIGGER MENU . Press the main-menu T ype pop-up until you select V ideo . If the TRIG’D LED is not on, check that the CH1 – Width and CH1 Period measurements are adjusted correctly (see note above).
Performance T ests Performance V erification Procedures Disconnect all test equipment (TSG 121) from the oscilloscope. Press save/recall SETUP , press the main-menu button Recall Factory Setup , and the side-menu OK Confirm Factory Init .
Specifications.
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TDS 520A, 524A, 540A, & 544A Performance V erification Specifications This subsection begins with a general description of the traits of the TDS 520A, 524A, 540A and 544A Digitizing Oscilloscopes. Three subsections follow , one for each of three classes of traits: nominal traits, warranted char- acteristics, and typical characteristics .
Specifications Specifications Specialized display modes, such as variable persistence (with color coding on the TDS 524A and 544A), dot or vector mode, sin(x)/x or linear display filters, and, on the TDS 524A and 544A, user selectable color palettes. The “Fit to Screen” feature compresses the entire waveform record to fit on the screen.
Specifications TDS 520A, 524A, 540A, & 544A Performance V erification General Purpose Knob Assign the general purpose knob to adjust a selected parameter function.
Specifications Specifications There are three horizontal display modes: main only , main intensified, and delayed only . Y ou can select among various horizontal record length settings. A feature called “Fit to Screen” allows the user to view entire waveform records within the 10 division screen area.
Specifications TDS 520A, 524A, 540A, & 544A Performance V erification The triggering system supports a varied set of features for triggering the signal-acquisition system.
Specifications Specifications Y ou can specify a mode and manner to acquire and process signals. Select equivalent-time sampling on repetitive signals or interpolation of points sampled on non-repetitive signals. Both can increase apparent sample rate on the waveform when maximum real-time rates are reached.
Specifications TDS 520A, 524A, 540A, & 544A Performance V erification Both H Bar and V Bar cursors can also be used to make absolute measure- ments; that is measurements relative to a defined level or event. For the H Bars, either cursor can be selected to read out its voltage with respect to any channels ground reference level.
Specifications Specifications self-diagnostic features built into the Digitizing Oscilloscope to aid in fault detection and servicing are also accessible using commands sent from a GPIB controller .
TDS 520A, 524A, 540A, & 544A Performance V erification Nominal T raits This subsection contains tables that list the electrical and mechanical nominal traits that describe the TDS 520A, 524A, 540A and 544A Digitizing Oscilloscopes.
Nominal T raits Specifications T able 2-3: Nominal T raits — Time Base System Name Description Range, Sample-Rate 1,3 TDS 540A, 544A Number of Channels On 1 2 3 or 4 Sample-Rate Range 5 Samples/s .
Nominal T raits TDS 520A, 524A, 540A, & 544A Performance V erification T able 2-4: Nominal T raits — T riggering System Name Description Range, Delayed T rigger T ime Delay 16 ns to 250 s Range,.
Nominal T raits Specifications T able 2-6: Nominal T raits — Interfaces, Output Ports, and Power Fuse Name Description Interface, GPIB GPIB interface complies with IEEE Std 488–1987 Interface, RS-.
Nominal T raits TDS 520A, 524A, 540A, & 544A Performance V erification T able 2-7: Nominal T raits — Mechanical Name Description Cooling Method Forced-air circulation with no air filter Construction Material Chassis parts constructed of aluminum alloy; front panel constructed of plastic laminate; circuit boards constructed of glass-laminate.
Nominal T raits Specifications.
TDS 520A, 524A, 540A, & 544A Performance V erification W arranted Characteristics This subsection lists the electrical and environmental warranted characteristics that describe the TDS 520A, 524A, 540A and 544A Digitizing Oscilloscopes. W arranted characteristics are described in terms of quantifiable performance limits which are warranted.
W arranted Characteristics Specifications T able 2-8: W arranted Characteristics — Signal Acquisition System (Cont.) Name Description Analog Bandwidth, DC-50 Coupled or DC-1 M Coupled V olts/Div 5 mV/div – 10 V/div 2 mV/div – 4.98 mV/div 1 mV/div – 1.
W arranted Characteristics TDS 520A, 524A, 540A, & 544A Performance V erification T able 2-10: W arranted Characteristics — T riggering System Name Description Accuracy (Time) for Pulse-Glitch or Pulse-Width T riggering Time Range 2 ns to 1 s 1.
W arranted Characteristics Specifications T able 2-1 1: W arranted Characteristics — Interfaces, Output Ports and Power Requirements Name Description Logic Levels, Main- and Delayed- T rigger Outputs Characteristic V out (HI) V out (LO) Limits 2.5 V open circuit; 1.
W arranted Characteristics TDS 520A, 524A, 540A, & 544A Performance V erification T able 2-12: W arranted Characteristics — Environmental, Safety , and Reliability Name Description Atmospherics .
W arranted Characteristics Specifications.
TDS 520A, 524A, 540A, & 544A Performance V erification T ypical Characteristics The tables in this subsection list the typical characteristics that describe the TDS 520A, 524A, 540A and 544A Digitizing Oscilloscopes. T ypical characteristics are described in terms of typical or average performance.
T ypical Characteristics Specifications T able 2-13: T ypical Characteristics — Signal Acquisition System (Cont.) Name Description Step Response Settling Errors TDS 540A and 544A, all channels, TDS 520A and 524A, CH1, CH2 only V olts/Div Setting Step Amplitude Settling Error (%) 3 1 mV/div–99.
T ypical Characteristics TDS 520A, 524A, 540A, & 544A Performance V erification T able 2-15: T ypical Characteristics — T riggering System Name Description Accuracy , T rigger Level or Thresh- old, DC Coupled T rigger Source Any Channel Auxiliary (TDS 540A & 544A only) Accuracy 2 Of fset) + 0.
T ypical Characteristics Specifications T able 2-15: T ypical Characteristics — T riggering System (Cont.) Name Description Sensitivities, Pulse-T ype T rigger Width and Glitch 6 1.0 division with a minimum slew rate of 25 div/ s at the trigger level or the threshold crossing.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Tektronix TDS544A è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Tektronix TDS544A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Tektronix TDS544A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Tektronix TDS544A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Tektronix TDS544A, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Tektronix TDS544A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Tektronix TDS544A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Tektronix TDS544A insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
