HP 400F User Manual

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HP 400F Specifications

General

Brand	HP
Model	400F
Category	Measuring Instruments
Language	English

Summary

Section II INSTALLATION

2-3. INITIAL INSPECTION

2-5. POWER REQUIREMENTS

Covers AC and battery power requirements for the 400F/FL.

2-7. GROUNDING REQUIREMENTS

Explains the importance and methods of grounding the instrument.

2-10. INSTALLATION

2-18. REPACKAGING FOR SHIPMENT

Section III OPERATING INSTRUCTIONS

3-3. CONTROLS, INDICATORS AND CONNECTORS

3-5. METER MECHANICAL ZERO ADJUSTMENT (400F ONLY)

3-7. TURN ON PROCEDURES

3-8. AC VOLTAGE MEASUREMENTS

Explains how to perform AC voltage measurements and the effect of distortion.

3-9. DB MEASUREMENTS

Details procedures for making dB and dBm measurements.

3-10. WIDE BAND AC AMPLIFIER

Covers using the instrument as a wide band AC amplifier.

Section IV THEORY OF OPERATION

4-3. BLOCK DIAGRAM DESCRIPTION

4-7. INPUT ATTENUATOR

4-9. PREAMPLIFIER

4-13. POST ATTENUATOR

4-15. 100 KHz LOW PASS FILTER

Section V MAINTENANCE

5-3. TEST EQUIPMENT REQUIRED

5-5. PERFORMANCE CHECKS

Details checks to compare the instrument with its accuracy specifications.

5-12. ACCURACY AND FREQUENCY RESPONSE CHECKS

Outlines procedures for checking accuracy and frequency response.

5-14. RANGE TRACKING CHECK

Describes how to check the instrument's range tracking.

5-16. INPUT IMPEDANCE CHECK

Details procedures for checking input impedance.

5-18. INPUT CAPACITY CHECK

Explains how to check the instrument's input capacity.

5-19. ALIGNMENT AND CALIBRATION PROCEDURES

Introduces procedures for alignment and calibration.

5-26. METER MECHANICAL ZERO ADJUSTMENT

5-28. METER CALIBRATION

Details procedures for calibrating the meter amplifier gain.

5-30. METER CALIBRATION, 30 MV RANGE

Specific calibration steps for the 30 mV range.

5-31. METER CALIBRATION, 0.1 MV RANGE

Specific calibration steps for the 0.1 mV range.

5-32. ATTENUATOR ALIGNMENT

Procedures for aligning the input attenuator.

5-34. A2Q1 BIAS ADJUSTMENT

5-39. TROUBLESHOOTING PROCEDURE

Provides a systematic approach to troubleshooting.

5-43. MALFUNCTIONS AND PROBABLE CAUSES

5-44. POWER SUPPLY

5-46. AMPLIFIERS

5-48. METER BRIDGE

5-50. ETCHED CIRCUIT BOARD REPAIR

Section VI SCHEMATICS

Section VII REPLACEABLE PARTS

7-4. ORDERING INFORMATION

7-6. NONLISTED PARTS

Appendix B HEWLETT-PACKARD SALES AND SERVICE OFFICES