Equipment information:

Krohn-Hite Corporation 4500 Oscillator
Manufacturer:
Krohn-Hite Corporation
Model: 4500
Date:
Category: Measurement instruments
Group: Oscillator
Description: 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.

These manuals are available for the above equipment:

Krohn-Hite Corporation -- 4500 -- Service and User Manual
File name: KrohnHite-7105-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 24
Size: 863.85 Kbytes (884586 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: 7196c97706beda5693123e14a0f46158
ed2kID: e11652d3b87ed5f0ae3601c31479ec92
Downloads: 58 since 06 September 2015
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
KrohnHite-7105-Manual-Page-1-Picture
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