|Philips PM 3212 Oscilloscope|
|Description:||25MHz dual-channel oscilloscope|
The 25MHz dual-channel Oscilloscope PM 3212 is a compact, lightweight instrument, featuring ergonomic design and extensive measurement capabilities. A large 8 x 10 cm screen, with internal graticule lines, a high intensity trace together with features such as TV triggering, switchable trigger modes and adding modes for the vertical channel, make this instrument suitable for a very wide range of use. A double-insulated Power supply allows the frame ground to be directly connected ro floating ground circuits provided this ground does not carry live potentials. Interference by ground currents, as is frequently experienced with grounded oscilloscopes, is also substantially reduced. Use of the Oscilloscope in the field is further facilitated by optional battery operation.
These manuals are available for the above equipment:
|Philips -- PM 3212 -- Service and User Manual|
|Manual Type:||Service and User Manual|
|Size:||7.38 Mbytes (7739837 Bytes)|
|Language:||english, german, french|
|Manual-ID/Number:||9499 440 15802 and/or 9444 032 12..1|
|Date:||15 September 1976|
|Quality:||Scanned document, reading partly badly, partly not readable.|
|Upload date:||31 July 2020|
|Downloads:||10 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 amplifier 10 1.2.3 Time-base 10 1.2.4 Triggering 11 1.2.5 X Deflection 11 1.2.6 Calibration generator 11 1.2.7 Power supply 11 1.2.8 Environmental conditions 12 1.2.9 Mechanical data 12 1.3 ACCESSORIES 12 1.3.1 Supplied with the instrument 12 1.3.2 Optional 13 2 DIRECTIONS FOR USE 14 2.1 INSTALLATION 14 2.1.1 Safety regulations 14 2.1.2 Local mains connection and fuse protection 14 2.1.3 Connection to an external supply 15 2.1.4 Front cover and instrument position 15 2.2 CONTROLS AND SOCKETS 15 2.2.1 Cathode-ray tube and power controls 15 2.2.2 Vertical channels 16 2.2.3 Triggering 16 2.2.4 Horizontal channels 17 2.2.5 Miscellaneous 17 2.3 OPERATING INSTRUCTIONS 18 2.3.1 Switching on the instrument 18 2.3.2 Preliminary settings of the controls 18 2.3.3 Input coupling 18 2.3.4 Use of probes 18 2.3.5 Selection of chopped or alternate modes 18 2.3.6 Differential mode 20 2.3.7 Selection of trigger mode 20 2.3.8 Triggering source 21 2.3.9 XY measurements 22 3. SERVICE DATA 53 3.1 BLOCK DIAGRAM DESCRIPTION 53 3.1.1 Y Channel 53 3.1.2 Triggering 53 3.1.3 Time-base circuit 53 3.1.4. Hold-off circuit 53 3.1.5 Z Axis 53 3.2. DISMANTLING 55 3.3. PARTS LISTS 61 FIGURES 1.1. 25 MHz dual-channel Oscilloscope PM 3212 9 2.1. Rear view of the Oscilloscope showing the voltage adapter set to 110V 14 2.2. Front view of the Oscilloscope showing controls and sockets 15 2.3. How to compensate passive 10:1 probes and the effect on waveforms. 19 2.4. Suppression of common mode signals 20 2.5. Block diagram of composite trigger circuit 21 3.1. Block diagram of the oscilloscope 52 3.2. Removing the instrument covers and the carrying handle 54 3.3. Pivot centre button 54 3.4. Removing the front assembly (screws A) 57 3.5. Removing the front assembly (screws B) 57 3.6. Removing the front assembly (screws C) 57 3.7. Replacing a push-button switch 57 3.8. Replacing the thermal fuse 58 3.9. Front view showing item numbers 60 3.10 Rear view showing item numbers 60 3.11 Vertical attenuator unit 75 3.12. Power supply unit 76 3.13. Vertical Amplifier unit 78 3.14. Circuit diagram of the complete Oscilloscope PM 3212. 79
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