General Resistance Instruments - DAS 70 - Netzteil
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Gerät:
DAS 70
Datum:
1977
Kategorie:
Gruppe:
Untergruppe:
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The General Resistance D A S is a versatile laboratory
Instrument that provides high precision and stability In a
compact portable unit. It Is so designed and constructed as
to be essentially Independent of ambient temperature and
loading within the instrument ratings.
The DAS has the following basic functional modules?
1 * A chopper-stabilized operational Amplifier 2. A highly stable reference source.
3. A Kelvin Varley potential divider.
The D A S is contained in a package whose envelope Is:
Series 40 & 50: 6-7/16" h x 6 " w x 7" d
Series 60, 70 & 80? 7" h x 8" w x 10-5/16" d
The D A S 50 and 80 have built-in constant-current operation
while the DAS 40 60, and 70 can be used with an inexpensive
adaptor to provide constant-current operation. Remote
sensing terminals are provided to furnish the calibrated
voltage at locations distant from the Dial-A-Source output
terminals.
The remote sensing capability automatically compensates for
the voltage drop in the connecting cables.
1 Handbuch
Reparatur und Bedienungsanleitung
Dokumenttyp:
Reparatur und Bedienungsanleitung
Seitenanzahl:
39
Größe:
25,4 MB
Sprache:
englisch
Revision:
Dokument-ID:
Datum:
Januar 1977
Qualität:
Gescanntes Dokument, teilweise schwer oder teilweise nicht zu lesen.
Upload Datum:
16. August 2017
MD5:
b4bb51b1-4a49-ff8f-342c-bb4b32f2d688
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Table of contents
m List of illustrations
iii Warranty
1.0 Introduction and description
1 . 1 Genera I
lo2 Unit specifications
2.0 In i t i a I se t = up
2.1 Unpacking and inspection
2.2 In i t i a I tu rn = on
3.0 Description of operating controls
3 . 0 o 1 Power switch
3.0.2 Range switch
3.0.3 Polarity switch
3.0.4 Voltage decade switches
8.0.5 Output {function switch
3.0.6 Current limit control
3.0.7 Constant-=curp®nt selection
3.1 Calibration controls
3.1.1 Reference calibration
3.1.2 Amplifier zero^set
3.2 Operating instructions
3.2.1 Power
3.2.2 Warmup
3.2.3 Range
3.2.4 Polarity
3.2 ,5 Output voltage
3.2.6 Remote sensing
3.2.7 Load impedance limits
3.2.8 Constant current operation
3.2.9 Current limit control
3.2.10 Optional low nols© attenuator (LNA)
4.0 Maintenance and calibration
4.1 Maintenance and repair
4.2 Operational check
4.3 Calibration
4.3.1 Amplifier zero-set
4.3.2 Reference voltage calibration
4.3.3 Test of Kelvin Varley divider
4 . 3 9 4 Recommended test equipment list
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general-resistance-instruments--das-70--service-user--ID9309.pdf