General Resistance Instruments DAS 80 Compteur de fréquence
Manufacturer:
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.

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Service et Manuel de l'utilisateur
Manual type:
Service et Manuel de l'utilisateur
Pages:
39
Size:
25.38 Mbytes (26607689 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
01 January 1977
Quality:
Document scanné, la lecture en partie mal, en partie illisible.
Upload date:
16 August 2017
MD5:
b4bb51b14a49ff8f342cbb4b32f2d688
Downloads:
2967

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

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