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Summary of Contents for Thurlby 1905
- Page 1 T h u r l b y 1905 intelligent multimeter OPERATING MANUAL...
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Page 2: Table Of Contents
INDEX Section ssctron INTRODUCTION COMPUTING AND DATALOGGING PREPARATION FOR USE *Key Operating power Logger Oli/off switch AvLoHi Stand 2.3" Filter Dec Pt MULTIMETER OPERATION Basic operating sequence Maximum inputs Ax+b Overrange indication �% Negative indication Limits 5% digit scale length USING PROGRAM DC voltage measurement... -
Page 3: Maximum Inputs
3. MUL T1METER OPERATION 3.6 DC voltage measurement 3.1 Basic operating sequence The instrument measures DC voltage between 1/LV and 1100V. a. Select the required function, either V (voltage), 0 (resistance), Maximum displayed reading is ±209999 except for the highest or A (current). -
Page 4: Dc Current Measurement
3.14 Using 'null' key current measurement Depressing the 'null' key causes the present displayed The instrument measures current from 1 nA to 5A. Maximum reading is ±209999 except for the highest range. The 5 amp measurement value to be stored and subtracted from future readings. -
Page 5: Stand
4. GENERAL SAFETY CONSIDERATIONS 6. WARM-UP TIME This instrument has been designed to the highest safety The instrument uses a high performance ovened reference which standards, but safety depends on the user and the following basic has a 5 minute warm-up period. In addition, other components precautions should observed. -
Page 6: Avlohi
dB-enables voltage, current or resistance to be displayed in COMPUTING DATALOGGING FUNCTIONS logarithmic form. (PROGRAMS) In order to facilitate the display of voltage in decibels, the result of range of intelligent functions a re available which require vieT the calculation 2010g,o is displayed where x is in volts. -
Page 7: Decpt
10. USING A PROGRAM vi. The largest value that can be entered for each constant is given by depressing the key below 10.1 Select the required program in Table A. If a value greater than this is entered, it will not be the program name. -
Page 8: Simultaneous Operation Of Programs
Notes on data recall for Logger: 10.9 Checking program status i . Storage locations are recalled in cyclic order. The first location i. Indication that one or more programs are running is given by recalled is the one most recently used. Unused locations are not pulsing of the decimal point at conversion rate. -
Page 9: Ax+B
11. PROGRAM EXAMPLES to work through the following examples of the The user wishes to measure AC voltage expressed in dBs is advisable computing and datalogging functions before trying them out in an relative to 1 milliwatt into 600ns. The user starts by selecting an actual measurement situation. - Page 10 The user wishes to observe the drift of a volt supply as a Wait about 1 minute percentage of its initial voltage. He can do this by using the 6. % Logger Cancel? Indicates that Logger is (percentage deviation function) running Display shows Comment...
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Page 11: Limits �%
Additional errors for warm-up period of 5 mins only: cancel x(ko.) Both programs cancelled 2 100mV DC range-O.015%r+ 1dgt All other ranges-O.025%r+ 1dgt Thurlby maintain a policy of continuous development and reserve the right to alter specifications without notice. 11"1... - Page 13 14.2 LogarHhmic calculations APPENDICES The dB function can be used to provide a general logarithmic 14.1 Digital Filtering The digital filter differs from a conventional filter in that it is able to function in addition to dB calculations. effectively attenuate noise yet still respond rapidly to a change at The displayed value represents 2010g,0 ,x y'Ref the input.
- Page 14 Thurlby Electronics Ltd., New Road, St.lves, Huntingdon, Cambs. England. (0480) 63570 Tel: 32475 Telex: 104801 64623 Pri � ted by Mapro Publishing Services Ltd., The Quay, St.lves, C8mbs. Tel:...
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