Philips - PM3217 - Oscilloscope
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Philips PM3217
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Equipment:
PM3217
Date:
1981
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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.
3 Manuals
User manual
Manual type:
User manual
Pages:
44
Size:
6.4 MB
Language:
english
Revision:
Manual-ID:
9499 440 21501
Date:
October 1983
Quality:
Scanned document, all readable.
Upload date:
March 15, 2008
MD5:
8fa7abf8-5637-4e71-7dc4-5350bdc5ec36
Downloads:
4716
Service manual
Manual type:
Service manual
Pages:
160
Size:
18.2 MB
Language:
english
Revision:
Manual-ID:
9499 445 00611
Date:
December 1981
Quality:
Scanned document, all readable.
Upload date:
July 31, 2020
MD5:
42149fc3-b244-3826-b250-59bd49de1609
Downloads:
1103
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 Generator 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
User manual
Manual type:
User manual
Pages:
108
Size:
15.8 MB
Language:
english, german, french
Revision:
Manual-ID:
9499 440 21501
Date:
October 1983
Quality:
Scanned document, all readable.
Upload date:
March 15, 2008
MD5:
53ecdfeb-2a20-4d42-ebf4-15996a19ab34
Downloads:
283