Equipment information

Fluke 1900A Frequency counter
Manufacturer:
Model:
1900A
Date:
1976
Category:
Group:
Description:
Multifunction Counter

Information

The Fluke Model 1900A is a 5 Hz to 80 MHz mul- tiple-function Counter capable of making frequency, period, period averaging and totalize measurements. In the frequency mode, resolution is manually selectable at 0.1 Hz, 1.0 Hz, 10 Hz and 100 Hz. in the period averaging mode, the number of periods averaged is manually-selectable at 10°, 101, 102 and 103 periods. Automatic selection of resolution and number of periods averaged (autoranging) is also provided to automatically select the optimum range for a particular input signal. However, the 100 Hz resolution and 103 periods must be manually selected. 1 -3. The measurement display is six digits, light-emit- ting-diode-type (LED) with leading-zero suppression and automatic decimal point positioning. Annunciators are provided to indicate measurement units (kHz, MHz, milliseconds and microseconds) and also overflow when the capacity of the display is exceeded. All displayed information is also available, in parallel BCD format, at a rear-panel connector when the unit is equipped with an optional Data Output Unit (DOU). 1-4. The Model 1900A is equipped with a selectable 1 MHz low-pass Filter for use in electrically noisy environments, and a selectable 10:1 attenuator for use with high- level inputs. A self-check mode of operation is provided to verify overall performance of the unit. Power requirements are 100, 115 or 230 volts at 50 to 400 Hz for the line- powered version. An optional battery-powered version, Model 1900A--Ö1, provides for use away from ac power lines and is equipped with rechargeable nickel-cadmium batteries. The battery-powered version also operates from the ac lines, but only at the power line frequency and voltage specified on the bottom of the instrument.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
88
Size:
4.02 Mbytes (4218868 Bytes)
Language:
english
Revision:
1
Manual-ID:
Asus M3N78-VN
Date:
Quality:
Scanned document, all readable.
Upload date:
2016 02 08
MD5:
50951193019a81a6d6f4ba8d802e45d5
Downloads:
1073

Information

1 INTRODUCTION AND SPECIFICATIONS 1-1 1-1. INTRODUCTION ... 1-1 1-5. SPECIFICATIONS ... 1-1 2 OPERATING INSTRUCTIONS ... 2-1 2-1. INTRODUCTION ... 2-1 2-3. SHIPPING INFORMATION ... 2-1 2-6. INPUT POWER ... 2-1 2-8. RACK INSTALLATION ... 2-1 2-10. OPERATING FEATURES ... 2-1 2-12. OPERATING NOTES ... 2-3 2-13. Input Connection ... 2-3 2-15. Overload Protection ... 2-3 2-17. FREQUENCY MEASUREMENTS . ... 2-3 2-19. PERIOD MEASUREMENTS ... 2-3 2-21. TOTALIZE MEASUREMENTS ... 2-4 2-23. SELF CHECK MODE ... 2-4 3 THEORY OF OPERATION ... 3-1 3-1. INTRODUCTION ... 3-1 3-3. OVERALL FUNCTIONAL DESCRIPTION ... 3-1 3-4. Introduction ... 3-1 3-7. Frequency Mode ... 3-1 3-12. Period Mode ... 3-2 3-14. Totalize Mode ... 3-4 3-16. Self Check Mode ... 3-5 3-18. CIRCUIT DESCRIPTION ... 3-5 3-19. Introduction ... 3-5 3-21. Sequencer ... 3-5 3-24. Input Section ... 3-7 3-26. Main Gate/Decade Counters ... 3-7 3-28. Display Memory and Multiplexer ... 3-9 3-30. Display ... 3-9 3-32. Time Base ... 3-10 TITLE PAGE 3-34. Range Control Logic ... 3-1 1 3-38. Decimal Point Logic ... 3-12 3-40. Autorange Logic ... 3-12 4 MAINTENANCE ... 4-1 4-1. INTRODUCTION ... 4-1 4-3. SERVICE INFORMATION ... 4-1 4-5. GENERAL MAINTENANCE ... 4-1 4-6. Access ... 4-1 4-8. Cleaning ... 4-1 4-10. Fuse Replacement ... 4-1 4-12. PERFORMANCE CHECKS ... 4-1 4-14. Functional Check ... 4-1 4-16. Sensitivity Check ... 4-1 4-18 CALIBRATION ... 4-2 4-20. Trigger Leve! Adjustment ... 4-2 4-22. Time Base Oscillator Adjustment ... 4-2 4-24. Time Base Adjustment Using a Frequency Standard ... 4-3 4-25. TROUBLESHOOTING ... 4-3 4-26, Introduction ... 4-3 4-28. Initial Troubleshooting ... 4-3 4-30. Power Supply ... 4-3 4-32. Fault Isolation ... 4-3 4-34. Input Section ... 4-3 4-36. Time Base ... 4-3 4-38. Sequencer ... 4-3 4-40. Control Logic and Counters ... 4-3 4-42. REPAIR TECHNIQUES ... 4-4 4-43. Battery-Powered Instruments ... 4-4 4-45. Integrated Circuit Replacement ... 4-4 5 LIST OF REPLACEABLE PARTS ... 5-1 5-1. INTRODUCTION ... 5-2 5-4. HOW TO OBTAIN PARTS ... 5-2 5-7. USE CODE EFFECTIVITY LIST ... 5-2 6 OPTION AND ACCESSORY INFORMATION ... 6-1 7 GENERAL INFORMATION ... 7-1 8 SCHEMATIC DIAGRAMS ... 8-1

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User Manual with schematics
Manual Type:
User Manual with schematics
Pages:
86
Size:
4.07 Mbytes (4265857 Bytes)
Language:
english
Revision:
1 2/77
Manual-ID:
384875
Date:
Quality:
Scanned document, all readable.
Upload date:
2009 02 19
MD5:
dec41f1e7684f894cf5fa9c4903cc25a
Downloads:
3439