|Philips PM 3214 Oscilloscope|
|Description:||25 MHz dual-channel oscilloscope|
The 25 MHz dual-channel Oscilloscope PM 3214 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 iines makes for easier viewing, and a 10 kV accelerating potential gives a high intensity trace with a well-defined spot. A double-insulated Power supply allows the frame ground to be directly connected to floating ground circuits provided that this ground does not carry live potentials. By this means, interference by ground currents, as is frequently experienced with grounded oscilloscopes, is also substantially reduced. 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 any line voltage or frequency as well as from d.c. For field operation an optional battery version is also available.
These manuals are available for the above equipment:
|Philips -- PM 3214 -- Service Manual|
|Manual Type:||Service Manual|
|Size:||24.16 Mbytes (25329652 Bytes)|
|Language:||english, german, french|
|Manual-ID/Number:||9444 032 14..1 and/or 9499 440 16602|
|Date:||31 December 1976|
|Quality:||Scanned document, all readable.|
|Upload date:||31 July 2020|
|Downloads:||27 since 31 July 2020|
1 GENERAL INFORMATION 9 1.1 INTRODUCTION 9 1.2 TECHNICAL DATA 10 1.2.1 C.R.T. 10 1.2.2 Vertical or Y-axis 10 1.2.3 Horizontal or X-axis 11 1.2.4 Main time base 11 1.2.5 Delayed time base 11 1.2.6 X Deflection 12 1.2.7 Triggering of the main time base 12 1.2.8 Triggering of the delayed time base 12 1.2.9 Calibration generator 12 1.2.10 Power supply 13 1.2.11 Environmental conditions 13 1.2.12 Mechanical data 13 1.3 ACCESSORIES 13 1.3.1 Supplied with the instrument 13 1.3.2 Optional 14 2 DIRECTIONS FOR USE 15 2.1 INSTALLATION 15 2.1.1 Safety regulations 15 2.1.2 Local mains connection and fuse protection 15 2.1.3 Connection to an external supply 16 2.1.4 Front cover and instrument positions 16 2.2 CONTROLS AND SOCKETS 16 2.2.1 Cathode-ray tube and POWER controls 16 2.2.2 Vertical channels 17 2.2.3 Horizontal channel 17 2.2.4 Main time base generator 18 2.2.5 Delayed time base generator 19 2.2.6 Miscellaneous 19 2.3 OPERATING INSTRUCTIONS 21 2.3.1 Switching on the instrument 21 2.3.2 Preliminary settings of the controls 21 2.3.3 Input coupling (AC/DC, 0) 21 2.3.4 Use of probes 21 2.3.5 Selection of chopped or alternate modes 21 2.3.6 Differential mode 22 2.3.7 Selection of trigger mode 22 2.3.8 Triggering source 23 2.3.9 X Y measurements 24 2.3.10 Using the delayed time base 24 3 SERVICE DATA 59 3.1 BLOCK DIAGRAM DESCRIPTION 59 3.1.1 Y Channel 59 3.1.2 Main time-base triggering 59 3.1.3 Main.time-base circuit 3.1.4 Hold-off circuit 59 3.1.5 Z-axis 59 3.1.6 Delayed time-base triggering 60 3.1.7 Delayed time-base circuit 60 3.1.8 Alternate time-base logic 60 3.1.9 Power supply 60 3.2 DISMANTLING 61 3.3 PARTS LISTS AND DIAGRAMS 71 FIGURES 1.1. 25 MHz dual-channel Oscilloscope PM 3214 9 2.1. Rear view of the Oscilloscope showing the voltage adapter set to 220 V 15 2.2. Front view of the Oscilloscope showing controls and sockets 16 2.3. How to compensate passive 10:1 probes and the effect on waveforms. 20 2.4. Suppression of common mode signals 22 2.5. Block diagram of composite trigger circuit 23 3.1. Block diagram of the oscilloscope 58 3.2. Removing the instrument covers and the carrying handle 62 3.3. Pivot centre button 62 3.4. Removing the delay-time multiplier knob 64 3.5. Removing the front assembly (screws C) 64 3.6. Removing the push-button switches (screws D) 65 3.7. Removing the front assembly (screws E) 65 3.8. Removing the front assembly (screws F) 66 3.9. Push-button set clamping device 66 3.10. Replacing a push-button switch 66 3.11. Replacing the thermal fuse 67 3.12. Front view showing item numbers 70 3.13. Rear view showing item numbers 70 3.14. Vertical attenuator unit 89 3.15. Power supply unit 90 3.16. Vertical Amplifier unit 92 3.17. Circuit diagram of the complete Oscilloscope PM 3214. 93
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