Equipment information:

Electro Scientific Industries DT 72A Test Set
Manufacturer:
Electro Scientific Industries
Model: DT 72A
Date: 1975
Category: Measurement instruments
Group: Test Set
Description: Decade Transformer
Information:
                                    The MODEL DT 72A DEKATRAN DECADE TRANSFORMER is a laboratory
standard divider for establishing either voltage or current
ratios at audio frequencies.

The DEKATRAN circuit is an auto-transformer with a variable
tap. The tap position is indicated by the dial reading which
gives the ratio of output turns to input turns. Additional
windings extend the ratio above and below the input so that
voltage ratios of -0. 1 and +1. 1 are available.

The accuracy of the DEKATRAN is established by
intercomparisons over a wide range of frequencies and dial
settings, traceable to a special NBS -certified transformer.

These manuals are available for the above equipment:

Electro Scientific Industries -- DT 72A -- User Manual
File name: ESI-8031-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 38
Size: 9.12 Mbytes (9567265 Bytes)
Language: english
Revision:
Manual-ID/Number: 7203
Date: 01 September 1975
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: cf5111bdace2baa04b7f11c2de16692c
ed2kID: b177dc775dfc8d4ce07d78cd7cc56ed9
Downloads: 8 since 12 September 2016
Information:
I	INTRODUCTION

1.1	DESCRIPTION	1,1-1

1.2	FEATURES	1.2-1

1.3	SPECIFICATIONS	1.3-1

II	OPERATION

2. 1 VOLTMETER CALIBRATION	2. 1 -1

2.2 AMMETER CALIBRATION	2.2-1

2. 3 VOLTAGE DIVIDER CALIBRATION	2.3-1

2.4	TRANSFORMER RATIO CALIBRATION	2.4-1 2. 5 IMPEDANCE
COMPARISON MEASUREMENTS	2.5-1

2.5.1	Capacitance Comparisons	2.5-5

III	THEORY

3.1	SOURCES OF ERROR	3.1-1

3.2	LOADING EFFECTS	3.2-1

IV	MAINTENANCE

4. 1 ACCESSING COMPONENTS	4. 1 -1

4. 2 PERIODIC MAINTENANCE	4. 1 -1

4. 2. 1 Visual Inspection	4. 1 -1

4.2.2	Cleaning and Lubrication	4.2-1

4.3	REPLACING THE DUST COVER	4.2-1

4.4	SCHEMATIC DIAGRAM	4.2-1

V	PARTS LIST	5-1
ESI-8031-Manual-Page-1-Picture
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