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Krohn-Hite Corporation 4500 Oscillator
Manufacturer:
Model:
4500
Date:
unknown
Class:
Type:
SubType:
Ultra-Low Distortion RC Oscillator

Information

The Krohn-Hite Model 4500 is an ultra-low distortion, stable amplitude Oscillator designed for test and measurement applications in the 1Hz to 100kHz frequency range. The 4500 produces a virtually "distortion free" (<0.001%) sinewave for measuring harmonic distortion in audio pre-amplifier and power Amplifier circuits. It also generates squarewaves with aberrations of less than 5% peak to peak amplitude. The exceptionally flat response of the 4500 (+0.05dB) eliminates the need to constantly monitor voltage levels during Amplifier response tests. The unit delivers up to 7 volts rms open circuit to MAIN and INVERTED OUTPUTS of 600 ohm impedance. A MAIN OUTPUT of 50 ohms impedance is also provided. A four position pushbutton ATTENUATOR calibrated in 20dB steps together with a 30dB vernier provides a total dynamic range of 90dB. Amplitude and frequency stability varies less than 0.001% with a 10% change in line voltage. Sumultaneous INVERTED (180°) OUTPUT is provided for synchronizing a scope or as an auxiliary output. The output is fixed at 7 volts rms from a 600 ohm source impedance. Frequency tuning is provided by a 10:1 tuning dial and a 5 band decade multiplier . When combined with Krohn-Hite' s Ultra-Low Distortion Analyzer 6800A/6900 Series, it provides a complete distortion measurement system.

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Service and User Manual
Manual type:
Service and User Manual
Pages:
24
Size:
863.85 Kbytes (884586 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
unknown
Quality:
Scanned document, all readable.
Upload date:
06 September 2015
MD5:
7196c97706beda5693123e14a0f46158
Downloads:
956

Information

Operating and Maintenance Manual 1.0 GENERAL DESCRIPTION ... 1 1.1 INTRODUCTION ... 1 1.2 SPECIFICATIONS ... 1 1.3 GENERAL SPECIFICATIONS ... 2 2.0 OPERATION ... 5 2.1 INTRODUCTION ... 5 2.2 POWER REQUIREMENTS ... 5 2.3 TURN-ON PROCEDURE ... 5 2.4 CONTROLS AND CONNECTORS ... 5 2.5 OPERATION ... 6 3.0 INCOMING ACCEPTANCE AND ROUTINE PERFORMANCE TESTS. ... 9 3.1 INTRODUCTION. ... 9 3.2 PROCEDURE ... ... 9 4.0 CIRCUIT DESCRIPTION ... 13 4.1 THEORY OF OPERATION ... ... ... 13 4.2 AVC OPERATION ... 13 5.0 CALIBRATION ... 15 5.1 INTRODUCTION. ... ... 15 5.2 CALIBRATION PROCEDURE ... 15 5.3 Power supply ... 16 5.4 OUTPUT DC LEVEL ADJUSTMENTS ... 16 5.5 DIAL CALIBRATION. ... 16 5.6 FREQUENCY CALIBRATION (XI, ΧΙΟ, X1K) ... 16 5.7 FREQUENCY CALIBRATION (X10R). ... 16 5.8 DIAL CONFORMITY CHECK ... 17 5.9 DISTORTION ADJUSTMENT ... ... 17 5.10 SQUAREWAVE CALIBRATION ... 17 6.0 MAINTENANCE ... 19 6.1 INTRODUCTION ... 19 6.2 MAINTENANCE PROCEDURE ... 19 7.0 PARTS LIST, SCHEMATICS AND BOARD LAYOUTS ... .21 7.1 ORDERING INFORMATION ... 21 7.2 ORDERING UNLISTED PARTS ... 21

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