Equipment information

Philips PM3217U Oscilloscope
Manufacturer:
Philips
Model: PM3217U
Date: 1981
Category: Measurement instruments
Group: Oscilloscope
Description: 50MHz dual channel analog oscilloscope
Information:

50MHz dual channel analog Oscilloscope.The 50 MHz dual-channel Oscilloscope PM 3217 and PM 3217U is a compact, portable instrument, ergonomically designed to facilitate its extensive measuring capabilities. The instrument provides both a main and a delayed timebase with provision for alternate timebase displays, comprehensive triggering facilities including peak-to-peak Auto, DC coupling and automatic TV waveform display. A large 8 x 10 cm screen with illuminated internal graticule lines makes for easier viewing, and a 10 kV accelerating potential gives a high intensity trace with a well-defined spot. The wide range of applications enabled by the above features is further extended by a versatile Power supply that enables the instrument to be operated from different line voltages as well as from d.c. For field operation an optional battery version is also available.

These manuals are available for the above equipment:

Manual Type: Service Manual Philips-13079-Manual-Page-1-Picture
Pages: 160
Size: 18.22 Mbytes (19108196 Bytes)
Language: english
Revision:
Manual-ID/Number: 9499 445 00611
Date: 15 December 1981
Quality: Scanned document, all readable.
Upload date:
MD5: 42149fc3b2443826b25059bd49de1609
Downloads: 29 since 31 July 2020
Information:

1. GENERAL INFORMATION 1 1.1. Introduction ... 1 1.2. Characteristics ... 2 1.2.1. C.R.T ... 2 1.2.2. Vertical of Y-axis ... 2 1.2.3. Horizontal or X-axis ... 3 1.2.4. Main time base ... 3 1.2.5. Delayed time base ... 3 1.2.6. X Deflection ... 4 1.2.7. Triggering of main time base ... 4 1.2.8. Triggering of the delayed time base ... 4 1.2.9. Calibration Generator ... 5 1.2.10. Powersupply ... 5 1.2.11. Environmental characteristics ... 5 1.2.12. Mechanical data ... 10 1.2.13. Z-mod input ... 10 2. CIRCUIT DESCRIPTIONS 11 2.1. Block diagram description ... 11 2.1.1. Y channel ... 11 2.1.2. Main time base triggering ... 11 2.1.3. Main time base circuit ... 11 2.1.4. Hold-off circuit ... 12 2.1.5. Z axis ... 12 2.1.6. Delayed time base ... 12 2.1.7. Delayed time base circuit ... 12 2.1.8. Alternate time base logic ... 12 2.1.9. Powersupply ... 12 2.2. Description of the vertical section ... 13 2.2.1. Input coupling ... 13 2.2.2. Input attenuator ... 13 2.2.3. Impedance Converter ... 13 2.2.4. Preamplifier ... 13 2.2.5. Trigger pick-off ... 14 2.2.6. Normal invert switch ... 14 2.2.7. Position control ... 14 2.2.8. Channel multivibrator . ... 14 2.2.9. Delay line driver ... 15 2.2.10. Composite trigger pick-off ... 16 2.2.11. Final Y Amplifier ... . ... 16 2.3. Main time-base triggering ... 16 2.3.1. Main time-base trigger source selection and preamplifier ... 16 2.3.2. Impedance Converter and trigger comparator ... 16 2.3.3. Peak to peak level detector ... 17 2.3.4. T.V. Synchronisation separator ... 17 2.4. Main time-base Generator ... 18 2.4.1. Main time-base sweep Generator ... 18 2.4.2. Main time-base hold-off circuit ... 19 2.4.3. Main time-base sweep gating logic ... 19 2.4.4.. Auto sweep circuit ... 21 2.5. Delayed time-base triggering ... 21 2.5.1. Delayed time-base trigger source selection Amplifier ... 21 2.5.2. Impedance Converter and trigger comparator ... 21 2.6. Delayed time-base Generator ... 22 2.6.1. Delayed time-base sweep Generator ... 22 2.6.2. Delayed time-base end of the sweep detector circuit ... 22 2.6.3. Delay time function ... 23 2.6.4. Comparator circuit ... 23 2.6.5. Delayed time-base sweep gating logic ... 23 2.7. X deflection selector and alternate time-base logic ... 24 2.8. X final Amplifier ... ... 26 2.9. Cathode-ray tube circuit ... 26 2.9.1. C.R.T. controls ... 26 2.9.2. Beam blanking Amplifier ... 27 2.10. Power supply ... 29 2.10.1. General ... 29 2.10.2. Converter and stabilized Power supply ... 29 2.10.3. Illumination circuit ... 30 2.11. Calibration unit ... 30 2.12. Basic analog and digital circuits ... 31 2.12.1. Basic analog circuits ... 31 2.12.2. Basic digital circuits ... 32 3. DISMANTLING THE INSTRUMENT 34 3.1. Warning ... 34 3.2. Removing the instrument covers ... 34 3.3. Removing the carrying handle ... 35 3.4. Access to parts for checking and adjusting procedure ... 35 4. PERFORMANCE CHECK 36 4.1. General Information ... 36 4.2. Preliminary settings of the controls ... 36 4.3. Recommended test equipment ... 37 4.4. Checking procedure ... 38 5. CHECKING AND ADJUSTING 43 5.1. General information ... 43 5.2. Recommended test equipment ... 43 5.3. Preliminary of the controls ... 43 5.4. Survey of adjusting elements and auxiliary equipment ... 44 5.5. Checking and adjusting procedure ... 47 5.5.1. Power supply ... 47 5.5.2. Cathode-ray tube circuit ... 47 5.5.3. Y-amplifier balance ... 48 5.5.4. Trigger balance ... 49 5.5.5. Time-base generators ... 49 5.5.6. Vertical channels ... 51 5.5.7. Triggering ... 53 5.5.8. X-deflection ... 55 5.5.9. Calibration voltage ... 56 5.6. Adjustment interactions ... 57 6. CORRECTIVE MAINTENANCE 58 6.1. Replacements ... 58 6.6.1. Replacing internal fuses and mains transformer ... 59 6.1.2. Replacing single knobs ... 60 6.1.3. Replacing double knobs ... 60 6.1.4. Replacing delay-time multiplex knobs ... 60 6.1.5. Removing the text plate ... 60 6.1.6. Removing the front assembly ... 61 6.1.7. Replacing switches ... 63 6.1.8. Replacing the delay line unit ... 64 6.1.9. Replacing the cathode-ray tube ... 64 6.2. Soldering techniques ... 65 6.3. Special tool ... 66 6.4. Recalibration after repair ... 66 6.5. Instrument repackaging ... 66 6.6. Trouble-shooting ... 67 6.6.1. Introduction ... 67 6.6.2. Trouble-shooting hints ... 67 6.6.3. Mains transformer data ... 68 6.6.4. Voltages and waveforms in the instruments ... 68 6.6.5. Component location list ... . ... 70 6.7. Mains voltage settings ... 73 6.8. Checks after repair and maintenance ... 73 6.8.1 Checking the protective leads ... 73 6.8.2. Checking the insulating resistance ... 73 6.9. Extra in- and output circuits ... 74 6.9.1. External Z-modulation input ... 74 6.9.2. Main-time base sweep output ... 74 6.9.3. Main-time base gate output ... 75 6.9.4. Delayed time base gate output ... 75 6.10. Accessory information ... 77 7. PARTS LISTS 81 7.1. Mechanical parts ... 81 7.1.1. Spare parts for pushbutton switches ... 82 7.2. Electrical parts ... 83 8. CIRCUIT DIAGRAMS AND PRINTED CIRCUIT BOARD LAY-OUTS 105

Philips-13079-Manual-Page-1-Picture


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