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Summary of Contents for Time Electronics 1010
- Page 1 Time Electronics 1010 DC Voltage Calibrator Technical Manual V1.1 20/04/09 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.TimeElectronics.com...
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Page 2: Table Of Contents
Calibration Procedure ...................11 4.4. 10mV and 1mV Range Calibration ................11 Guarantee & Servicing ..................12 All Time Electronics' instruments are subject to continuous development and improvement and in consequence may incorporate minor detail changes from the information contained herein. 1010 Technical Manual... -
Page 3: Introduction
1. Introduction 1.1. General Description The 1010 is an accurate battery/mains powered voltage calibrator sourcing up to 10 volts in 5 ranges with a resolution up to 0.01uV. A precision zener reference diode is used as a basic reference source and low temperature coefficient resistors are used. -
Page 4: Power Unit
1.3. Power Unit The 1010 is supplied with a mains/battery power unit. This can be configured when ordered for either 115V or 230V AC, 50/60Hz. See section 2.7.3. 1.4. Circuit Description The calibrator employs a temperature compensated zener diode as the basic reference source. -
Page 5: Operation
2.1.3. Case terminal The case terminal is connected only to the instrument case and is isolated from the circuitry. The case provides an overall electrostatic screen for the 1010 and can be earthed as required to improve rejection of noise pick-up. -
Page 6: Output Noise
2.5. Thermal emfs When the 1010 is used to provide precision voltages of less than about 1 mV, care must be exercised to avoid errors due to thermal emfs. These occur where temperature differences are present at the junctions of dissimilar metals, e.g. a normal solder to copper junctions has a thermal emf of approximately 3 uV/°C. -
Page 7: Mains Power Unit
Mains input range: 110 - 250V AC 40 - 60 Hz. IEC mains input fuse is 20mm F1A. The capacity of the rechargeable battery is approximately 450mA Hrs. This allows about 40 - 50 hrs continuous use of the 1010. To fully recharge the battery requires 14-16 hours with mains connected. -
Page 8: Constructional Layout Details
It is a fully encapsulated module and connections are via a 16 pin connector moulded into it. The modular form of the 1010’s basic circuitry protects it from damage due to adverse conditions and thermal gradients which could give rise to thermal emf errors. A replacement procedure should be adopted in the case of failure or malfunctioning of the module - see Section 3.1.2. -
Page 9: Recalibration
9.9999V ranges less than +/- 100uV 4.2. Full Scale Fine adjustment of the 1010 output voltage is provided by 4 trimmers. One is located on the module is marked ‘CAL’ and provides equal adjustment of the output voltage for ranges. - Page 10 Fig. 1 1010 Trimmer Layouts 1010 Technical Manual...
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Page 11: Calibration Procedure
10mV to 10V f.s. The null meter should have a resolution of better than 1uV and preferably have calibrated ranges. A high performance D.V.M. can be used for calibrating. Note: It is possible to calibrate against another 1010 but the inaccuracies in that unit (if known) need to be taken into account. -
Page 12: Guarantee & Servicing
We maintain comprehensive after sales facilities and the unit can, if necessary be returned to us for servicing. During this period, Time Electronics Ltd will, at its discretion, repair or replace the defective items. For servicing under guarantee, the instrument type and serial number must always be quoted, together with details of any fault and the service required.
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