Oscilloscope lab Marking scheme

Oscilloscope lab Marking scheme - -10 Terminating the...

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Marking scheme for OSCILLOSCOPE - w10 ( short report) NB All errors from the oscilloscope should contain sqrt(2) factor Besides the regular deductions ( Tables, Graphs, errors rounded to 1 sig.fig. identification on the front page e.t.c.) maximal deductions should be Frequency control Max. deductions - generator frequencies should be close to 60Hz, 600Hz,. . 600 kHz ( if less than 4) with errors +/- 2 in the last digit (if missing) -3 - periods from Osc. with errors ( 10 th of sweep time/div x sqrt(2) ) -3 - frequency form period with errors -3 - log/log ( or ln/ln)graph with error bars -6 If the whole section missing -15 Calibration - Less than three frequencies measured -3 - period and frequencies from the oscilloscope - 3 - integers in ratio missing -4 If the whole section missing
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Unformatted text preview: -10 Terminating the circuit - Diagram missing -5 - Less than three voltages with errors - 5 If the whole section missing - 15 Capacitance of the cable - Circuit diagram missing -5 - less than 4 points V vs t -3 - graph , error bars, average point, slope missing -7 - C cable and error missing - 7 - resistor in oscilloscope missing -3 If the whole section missing -25 RC circuit - less than four frequencies -3 - circuit diagrams missing -3 - explanation missing -4 - if RC calculated bonus +5 If the whole section missing -10 Diode and AC to DC convertor Circuit diagrams missing -7 Diagrams of the signal before and after diode -2 VDC with error missing -4 Vr with error missing -4 Q with error missing -8 If the whole section missing -25...
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Oscilloscope lab Marking scheme - -10 Terminating the...

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