Manuale d’uso / di manutenzione del prodotto 3325B del fabbricante HP (Hewlett-Packard)
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__________ *This bulletin supersedes TB 9 - 6625 - 2049 - 35, 15 January 1996. *TB 9 - 6625 - 2049 - 35 SUPERSEDED COPY DATED 15 JANUARY 1996 DEPARTMENT OF THE ARMY TECHNICAL BULLETIN CALIBRATION PROC.
TB 9 - 6625 - 2049 - 35 2 Paragraph Page SECTION II I. CALIBRATION PROCESS - Continued Triangle and ramp amplitude ............................ 16 17 Dc offset ............................................................... 17 18 Dc of fset with ac ..
TB 9 - 6625 - 2049 - 35 3 Table 1 . Calibration Description Test instrument parameters Performance specifications Harmonic distortion 1 (relative to fundam ental at full output) Fundamental frequency: 0.
TB 9 - 6625 - 2049 - 35 4 Table 1. Calibration Description - Continued Test instrum ent parameters Performance specifications Amplitude accuracy with dc offset and no attenuation (range 1) into 50 Ω load Tolerance relative to programmed amplitude Sine wave: .
TB 9 - 6625 - 2049 - 35 5 5. Accessories Required. The accessories required for this calibration are common usage accessories, issued as indicated in paragraph 4 above, and are not listed in this calibration procedure.
TB 9 - 6625 - 2049 - 35 6 SECTION III CALIBRATION PROCESS 6. Preliminary Instructions a . The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration process. Personnel should become familiar with the entire bulletin b efore beginning the calibration.
TB 9 - 6625 - 2049 - 35 7 8. Harmonic Distortion a. Performance Check (1) Connect TI EXT REF IN 1, 10 MHz to spectrum analyzer 10 MHz REF IN/OUT . (2) Connect TI SIGNAL to spectrum analyzer INPUT 50 Ω Ω . (3) Press keys and enter values using DATA keys as listed in (a) through (h) below: (a) SIGNAL off (option 002 not lit).
TB 9 - 6625 - 2049 - 35 8 (a) 50 Hz . (b) ENTRY AMPTD . (c) 10 VOLT . (13) Set audio analyzer to measure distortion in dB. Audio analyzer indication will be ≤ - 65 dB. (14) Perform (15) through (19) below for option 002 only . (15) Connect equipm ent as shown in figure 1 and set resistance standard to 470 Ω .
TB 9 - 6625 - 2049 - 35 9 9. Amplitude Modulation Distortion a. Performance Check (1) Press keys and enter values using DATA keys as listed in (a) throug h (i) below: (a) SIGNAL off (option 002 not lit). (b) FUNCTION sine wave. (c) ENTRY FREQ . (d) 1 MHz .
TB 9 - 6625 - 2049 - 35 10 (a) SIGNAL off (option 002 not lit). (b) FUNCTION square wave. (c) ENTRY FREQ . (d) 1 MHz . (e) ENTRY AMPTD . (f) 1 V RMS . (2) Connect TI SIGNAL to oscilloscope CH 1 . (3) Set oscilloscope CH 1 COUPLING 50 Ω Ω to ON . (4) Set osc illoscope controls for duty cycle measurement.
TB 9 - 6625 - 2049 - 35 11 (4) Set oscilloscope controls to measure ramp retrace time from the 90 to 10 percent points. Ramp retrace time will be ≤ 3 µ s. ( 5) Press FUNCTION negat ive ramp key and repeat (4) above. b. Adjustments . No adjustments can be made.
TB 9 - 6625 - 2049 - 35 12 (15) Set frequency counter controls to measure frequency. If frequency counter does not indic ate between 59.99970 and 60.00030 MHz, perform b below. b. Adjustments (1) Disconnect TI rear panel 10 MHz OVEN OUTPUT from EXT REF IN option 001 only.
TB 9 - 6625 - 2049 - 35 13 (12) Adjust A9R7 Fine Adj. (fig. 3) and A9 Coarse Adj. (fig. 3) for a minimum indication on frequency difference meter. (13) Disconnect TI from frequency difference meter. (14) Reconnect TI rear panel 10 MHz OVEN OUTPUT to EXT REF IN .
TB 9 - 6625 - 2049 - 35 14 (6) Adj ust frequency counter sample rate control to HOLD and press RESET pushbutton. Record frequency counter indication. (7) Press ENTRY PHASE key and enter - 1 deg using DATA keys. (8) Press frequency counter RESET pushbutton and record frequency counter indi cation.
TB 9 - 6625 - 2049 - 35 15 Table 3. Amplitude Test instrument settings Multimeter indications ENTRY AMPTD ENTRY FREQ (V ac) 3.536 V RMS 1 kHz 3.495 3.577 3.536 V RMS 100 kHz 3.495 3.577 1.061 V RMS 100 kHz 1.048 1.073 1.061 V RMS 1 kHz 1.048 1.073 1.061 V RMS 100 Hz 1.
TB 9 - 6625 - 2049 - 35 16 Table 4. Flatness Test instrument and measuring receiver setting s (MHz) 1 2 4 6 8 10 12 14 16 18 20 b. Adjustments . No adjustments can be made. 15. Square Wave Amplitude and Flatness a. Performance Check (1) Connect TI SIGNAL to multimeter INPUT HI and LO using 50 Ω feedthrough termination.
TB 9 - 6625 - 2049 - 35 17 (a) 1 kHz . (b) ENTRY AMPTD . (c) 1 V RMS . (d) AMPTD CAL . (7) Multimeter will indicate between 0.99 and 1.01 V ac. (8) Disconnect TI from multimeter. (9) Connect TI SIGNAL to oscilloscope CH 1 using 50 Ω feedthrough termination.
TB 9 - 6625 - 2049 - 35 18 (6) Enter 10 kHz using DATA keys. Multimeter will indicate between 2.742 and 3.032 V ac. (7) Press keys and enter values using DATA keys as listed in (a) through (c) below: (a) FUNCTION positive ramp. (b) 100 Hz . (c) AMPTD CAL .
TB 9 - 6625 - 2049 - 35 19 Table 5. Dc Offset - Continued Test instrument DC OFFSET Multimeter indications (V dc) se ttings Min Max 14.99 mV 0.01493 0.01505 - 14.99 mV - 0.01505 - 0.01493 4.999 mV 0.004979 0.005019 - 4.999 mV - 0.005019 - 0.004979 1.499 mV 0.
TB 9 - 6625 - 2049 - 35 20 (4) Enter - 4.5 VOLT using DATA keys. Multimeter will indicate between - 4.35 and - 4.65 V dc. (5) Press ENTRY FREQ key and enter 999.9 kHz using DATA keys. Multimeter will indicate between - 4.44 and - 4.56 V dc. (6) Press ENT RY DC OFFSET key and enter 4.
TB 9 - 6625 - 2049 - 35 21 (a) ENTRY FREQ . (b) 100 kHz . (c) ENTRY AMPTD . (d) 10 V RMS . (e) AMPTD CAL . (5) Multimete r will indicate between 9 and 11 V ac. (6) Press keys and enter values using DATA keys as listed in (a) through (f) below: (a) FUNCTION square wave.
TB 9 - 6625 - 2049 - 35 22 Figure 5. Power supply assembly A2 – test instrument top view. (5) Press presently active FUNCTION key to remove ac output and activate ENTRY DC OFFSET key (lit). (6) Enter 0 VOLT using DATA keys and press AMPTD CAL key. (7) Connect multimeter INPUT HI to TP AMP OUT (fig.
TB 9-6625-2049-35 By Order of the Secretary of the Army: Official: ERIC K. SHINSEKI General, United States Army Chief of Staff JOEL B. HUDSON Administrative Assistant to the Sec retary of the Army 0029703 DISTRIBUTION: To be distributed in accordance with IDN 342200, requirements for calibration procedure TB 9-6625-2049-35.
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 HP (Hewlett-Packard) 3325B 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 HP (Hewlett-Packard) 3325B - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso HP (Hewlett-Packard) 3325B imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul HP (Hewlett-Packard) 3325B ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il HP (Hewlett-Packard) 3325B, 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 HP (Hewlett-Packard) 3325B.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il HP (Hewlett-Packard) 3325B. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo HP (Hewlett-Packard) 3325B 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.
