General Resistance Instruments DAS 80 Fonte de alimentação
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Model:
DAS 80
Date:
1977
Category:
Group:
Description:
Dial A Source
Information
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.
Manual type:
Serviço e Manual do Usuário
Pages:
39
Size:
25.38 Mbytes (26607689 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
1977 01 01
Quality:
Documento Scaned, a leitura parcialmente mal, não parcialmente legível.
Upload date:
2017 08 16
MD5:
b4bb51b14a49ff8f342cbb4b32f2d688
Downloads:
2089
Information
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
