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Philips PM 6625 Counter
Manufacturer:
Model:
PM 6625
Date:
1976
Class:
Type:
SubType:
Timer Counter 1GHz

Information

The counters in the PM 6620-series have frequency ranges from D.C. up to 80 MHz, 520 MHz and 1 GHz respectively for the PM 6622 PM 6624 and PM 6625, All models can measure frequency, ratio, period, time interval and have a totalizing mode. Optional Accessories such as four different oscillators, a battery unit, a BCD output unit, a D/A Converter and a BUS Interface system extend the range of application.

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Service and User Manual
Manual type:
Service and User Manual
Pages:
53
Size:
51.20 Mbytes (53683870 Bytes)
Language:
english
Revision:
Manual-ID:
9499 460 08611
Date:
15 June 1976
Quality:
Scanned document, all readable.
Upload date:
30 January 2017
MD5:
27e3124bda202830cb30721022fd14cf
Downloads:
1310

Information

General information I. Introduction 5 II. Technical data 5 III. Accessories 8 Directions for use IV. Installation 9 1. Mains voltage conversion 9 2. Earthing 9 3. Fuses 9 4. Optional Accessories 9 V. Controls, connectors and indicators 10 VI. Operation 16 General information 1. Switch on power 16 2. Warm op time 16 3. External Frequency Standard 16 4. Control settings 16 4.1. A, B and C inputs 16 4.2. AC and DC coupling 16 4.3. Attenuator and trigger level control 16 4.4. Separate and common via B mode 17 4.5. Positive and negative slope triggering 17 4.6. Hold off 17 5. Basic measurement 5.1. Check PM 6622 18 5.2. Check PM 6624 ... 25 19 5.3. Frequency A PM 6622 ... 25 20 5.4. Frequency C PM 6624 ... 25 20 5.5. Period B PM 6622 ... 25 21 5.6. Time Interval A to B PM 6622 ... 25 22 5.7. Ratio A/B PM 6622 ... 25 22 5.8. Ratio C/B PM 6624 ... 25 23 5.9. Count A Start/Stop and Gated by B PM 6622 ... 25 24 5.10. Hold off PM 6622 25 VII. Internal checks and adjustments 26 1. Location of trimmers and test points 26 2. Test equipment 26 3. D.C. voltages 26 4. D.C. balance channel A 26 5. Frequency compensation channel A 26 6. DC balance channel B 26 7. Frequency compensation channel B 26 VIII. Oscillators PM 9677, PM 9678, PM 9679 and PM 9690 28 1. General 28 2. Technical data 28 3. Frequency adjustment PM 9677 29 4. Frequency adjustment PM 9678 29 5. Frequency adjustment PM 9679 29 6. Frequency adjustment PM 9690 7. Repair of oscillators PM 9679 and PM 9690 29 8. Pin configuration 29 9. Circuit diagram, component layout and spare parts list PM 9677 30 10. Circuit diagram, component layout and spare parts list PM 9678 31 IX. Replacing parts 32 1. Push-button switches 32 2. Text plate and front rim 32 3. Handle 32 4. Power supply 32 X. Spare parts, circuit description of Power supply and prescaler units, 33 test conditions and circuit diagrams 1. Spare parts Unit 1 PM 6622 ... 25 2. Spare parts prescaler PM 6624 3. Spare parts prescaler PM 6625 4. Mechanical parts PM 6622 ... 25 5. Circuit description prescaler PM 6624 6. Test conditions 7. Circuit diagrams

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Service and User Manual
Manual type:
Service and User Manual
Pages:
135
Size:
21.57 Mbytes (22615676 Bytes)
Language:
english
Revision:
Manual-ID:
9499 460 09302
Date:
15 March 1978
Quality:
Scanned document, all readable.
Upload date:
01 August 2020
MD5:
9bee1b03e77cc8fb5dbd4fed59ffd654
Downloads:
56

Information

General information I. Introduction 5 II. Technical data 5 III. Accessories 8 Directions for use IV. Installation 9 1. Mains voltage conversion 9 2. Earthing 9 3. ' Fuses 9 4. Optional accessories 9 V. Controls, connectors and indicators 10 VI. Operation 16 General information 1. Switch on power 16 2. Warm up time 16 3. External frequency standard 16 4. Control settings 16 4.1. A, B and C inputs 16 4.2. AC and DC coupling 16 4.3. Attenuator and trigger level control 16 4.4. Separate and common via B mode 17 4.5. Positive and negative slope triggering 17 4.6. Hold off 17 5. Basic measurement 5.1. Check PM 6622 18 5.2. Check PM 6624 ... 25 19 5.3. Frequency A PM 6622 ... 25 20 5.4. Frequency C PM 6624 ... 25 20 5.5. Period B PM 6622 ... 25 21 5.6. Time Interval A to B PM 6622 ... 25 22 5.7. Ratio A/B PM 6622 ... 25 22 5.8. Ratio C/B PM 6624 ... 25 23 5.9. Count A Start/Stop and Gated by B PM 6622,.. 25 24 5.10. Hold off PM 6622 25 VII. Internal checks and adjustments 26 1. Location of trimmers and test points 26 2. Test equipment 26 3. D.C. voltages 26 4. D.C. balance channel A 26 5. Frequency compensation channel A 26 6. DC balance channel B 26 7. Frequency compensation channel B 26 VIII. Oscillators PM 9677, PM 9678, PM 9679 and PM 9690 28 1. General 28 2. Technical data 28 3. Frequency adjustment PM 9677 29 4. Frequency adjustment PM 9678 29 5. Frequency adjustment PM 9679 29 6. Frequency adjustment PM 9690 29 1, Repair of oscillators PM 9679 and PM 9690 29 8. Pin configuration 29 9. Circuit diagram, component layout and spare parts list PM 9677 30 10. Circuit diagram, component layout and spare parts list PM 9678 31 IX. Replacing parts 32 1. Push-button switches 32 2. Text plate and front rim 32 3. Handle 32 4. Power supply 32 X. Spare parts, circuit description of Power supply and prescaler units, 33 test conditions and circuit diagrams 1. Spare parts Unit 1 PM 6622 ... 25 33 2. Spare parts prescaler PM 6624 36 3. Spare parts prescaler PM 6625 37 4. Mechanical parts PM 6622 ... 25 35 5. Circuit description prescaler PM 6624 ... 25 and power supply 39 6. Test conditions 41 7. Circuit diagrams 43 List of figures g IV-1 Mains transformer connections ® V-1 Top view of PM 6622,.. 25 V-2 Bottom view of PM 6622 .. .25 VI-1 AC/DC coupling VI-2 Triggering 17 VI-3 COM via B mode VI-4 Positive and negative slope triggering 17 VI-5 Simple pulse width measurement 17 VI-6 Period average measurement 21 VI-7 Single period measurement 21 VI-8 Start/Stop by B measurement 24 VI-9 Gated by B measurement 24 VI-10 Time interval measurement on noisy signals 25 VIII-1 Oscillator PM 9677 30 Vlll-2 Oscillator PM 9677 30 VIM-3 Oscillator PM 9678 31 VIII-4 Oscillator PM 9678 31 IX-1 Replacing push-button switch 32 IX-2 Removing the front rim 32 X-1 Current paths in DC-to-DC converter 40 X-2 Component layout U1 46 X-3 Input/Output Amplifier D, Oscillator, decimal counting unit, display and time 52 base divider . I X-4 Input Amplifier A and B 58 X-5 Power supply 62 X-6 Prescaler PM 6624 64 X-7 Prescaler PM 6624 64 X-8 Prescaler PM 6624 66 X-9 Prescaler PM 6625 68 . X-10 Prescaler PM 6625 68 X-11 Prescaler PM 6625 . 70

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