Time Electronics 1017 Operating Manual

Time Electronics
Voltage/Current/Resistance Calibrator
Technical Manual
V1.2 01/11/10 Time Electronics Ltd
Botany Industrial Estate, Tonbridge, Kent, TN9 1RH
Tel: +44(0)1732 355993 Fax: +44(0)1732 770312
Email: mail@TimeElectronics.co.uk
Web Site: www.TimeElectronic s .com
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Contents

1. Introduction ............................................................................................................ 3
1.1. General Description ................................................................................................ 3
1.2. Specifications ......................................................................................................... 4
1.3. Circuit Description .................................................................................................. 5
1.4. Power Supply Description ..................................................................................... 5
2. Front Panel Controls .............................................................................................. 6
3. Opera tion ................................................................................................................ 7
3.1. Preparing for Use .................................................................................................... 7
3.2. Using the 1017 ........................................................................................................ 7
3.3. Thermal EMF's ........................................................................................................ 7
3.4. Using the Deviation Control ................................................................................... 7
4. Calibration .............................................................................................................. 8
4.1. Calibrating the 1017 ................................................................................................ 8
4.2. Zero Ad justment ..................................................................................................... 8
4.3. Calibrating the Full Scales ..................................................................................... 9
4.4. Calibrating the Deviation Control .......................................................................... 9
5. Guarantee & S ervicing ......................................................................................... 10
All Time Electronics' instruments are subject to continuous development and improvement and in consequence may incorporate minor detail changes from the information contained herein.
1017 Technical Manual
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1. Introduction

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1.1. General Description

The 1017 is a high performance portable calibrator for use in the field or laboratory. With voltage ranges from 10nV to 100V, current from 100nA to 100mA and resistance from
10mto 10k, it makes the 1017 an extremely versatile instrument, capable of calibration or simulation.
The digital deviation control allows the output to either increase or decrease directly in a percentage from 0.001% to 0.999%. This is a useful feature for checking the accuracy of difficult scales.
Long term stability is guaranteed by the use of high quality components and the latest in resistor technology.
The 1017’s basic reference source is a specially aged, computer selected, precision reference diode. The diode provides the input to the instruments active circuitry which incorporates several high performance chopper stabilised amplifiers with a zero stability of less than 0.5uV per°C and a warm up time of less than 1 minute.
The precision resistors used in the 1017 are high performance types with temperature ratio matching of less than 2ppm per °C.
The output terminals are low thermal E.M.F. types, typical E.M.F. of less than 0.2uV per °C. The 1017 can be powered from either the mains or the internal rechargeable battery pack.
The batteries are automatically recharged when the mains supply is connected. A front panel battery level indicator displays the batteries state of charge.
Output polarity can be reversed via a switch on the front panel.
1017 Technical Manual
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