Equipment information:

Krohn-Hite Corporation 6900B Analyzer
Manufacturer:
Krohn-Hite Corporation
Model: 6900B
Date:
Category: Measurement instruments
Group: Analyzer
Description: WIDE RANGE FULLY AUTOMATIC DISTORTION ANALYZER
Information:
                                    The Krohn-Hite Model 6900B is a Fully Automatic Distortion
Analyzer designed or ultra-low distortion and ac voltage
measurements in the 5Hz to 1MHz frequency range. The
Distortion Analyzer will measure total harmonic distortion
(THD) down to 0.005%, typically, with 0.001% resolution.
A unique Auto Set Level feature eliminates the need to
manually preset the input reference level before each
measurement for any input voltage between 0.1-130 volts rms.
An Auto-Null Network provides Auto Nulling of the
fundamental frequency over the entire frequency range. The
Analyzer also measures ac voltages from 10mV to 130 volts
rms over the range of 5Hz to 1MHz.
The Auto-Ranging Digital Display Meter (DDM) reads directly
in percent distortion or ac volts, and eliminates the
ambiguities commonly found in analog voltmeter. A 1kHz
ultra-low distortion (0.003%) sinewave output is provided
for use as a stimulus to test circuit or system distortion
characteristics, or for self-checking of the Analyzer.
A switch selectable High-Pass filter reduces the effects of
hum and low frequency noise. The 400Hz, 30kHz and 80kHz
selectable filters are effective only in the DISTORTION
MODE. An internal low-pass tracking filter eliminates high
frequency noise when making low distortion measurements.
A DISTORTION OUTPUT is also provided for visual inspection
or spectral analysis of the input signal after the
fundamental has been filtered out.
An optional BCD output is available.

These manuals are available for the above equipment:

Krohn-Hite Corporation -- 6900B -- User Manual
File name: KrohnHite-7107-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 15
Size: 2.86 Mbytes (3001228 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: ab2ff5c307ab19261ac04feeca4b27e1
ed2kID: 6aeb5db599cf0e0a8c73fb85efb7272d
Downloads: 44 since 06 September 2015
Information:
Only the Operation Sections included!

1.0 GENERAL
DESCRIPTION...............................................................................................................1-1
1.1
Introduction.........................................................................................................................1-1
1.2
Specifications......................................................................................................................1-1
1.3 General
Specification...........................................................................................................1-3
2.0
OPERATION....................................................................................................................................2-1
2.1
Introductions........................................................................................................................2-1
2.2 Power
Requirements............................................................................................................2-1
2.3 Turn-on
Procedure...............................................................................................................2-1
2.4 Controls, Terminals,
Indicators.............................................................................................2-1
2.5
Operation............................................................................................................................2-2
2.6 Optional
Features................................................................................................................2-4
3.0 INCOMING
ACCEPTANCE..............................................................................................................3-1
3.1
Introduction.........................................................................................................................3-1
3.2
Procedure...........................................................................................................................3-1
4.0 CIRCUIT
DESCRIPTION...................................................................................................................4-1
4.1
Introduction.........................................................................................................................4-1
4.2 Circuit
Description................................................................................................................4-1
5.0
CALIBRATION.................................................................................................................................5-1
5.1
Introduction.........................................................................................................................5-1
5.2 Calibration
Procedure...........................................................................................................5-1
5.3 Power
Supply.......................................................................................................................5-1
5.4 Voltmeter
Calibration............................................................................................................5-2
5.5 Input Amplifier
Calibration....................................................................................................5-3
5.6 Stepping Amplifier
Calibration..............................................................................................5-3
5.7 Output Amplifier
Calibration.................................................................................................5-3
5.8 Frequency Detector
Calibration...........................................................................................5-4
5.9 1kHz Oscillator
Calibration...................................................................................................5-4
5.10 1kHz
Calibration..................................................................................................................5-4
5.11 Integrator Level
Calibration..................................................................................................5-4
5.12 Calibration
Adjustments.......................................................................................................5-4
6.0 MAINTENANCE
...............................................................................................................................
6-1
6.1
Introduction.........................................................................................................................6-1
6.2 Trouble-Shooting
Procedure................................................................................................6-1
6.3 Step-by-Step Troubleshooting
procedure............................................................................6-1
6.4 Power
Supply.......................................................................................................................6-6
6.5 ALC
Amplifier......................................................................................................................6-6
6.6 Null
Amplifier.......................................................................................................................6-7
6.7 Meter
Amplifier.....................................................................................................................6-7
6.8 Operational
Rectifier............................................................................................................6-7
6.9
Integrator.............................................................................................................................6-8
6.10 Voltage
Discriminator...........................................................................................................6-8
6.11 Frequency
Discriminator......................................................................................................6-8
6.12
Oscillator.............................................................................................................................6-8
7.0 PARTS LISTS, SCHEMATICS AND BOARD
LAYOUTS...............................................................7-1
7.1 Ordering
Information............................................................................................................7-1
7.2 Ordering Unlisted
Parts.......................................................................................................7-1
KrohnHite-7107-Manual-Page-1-Picture
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