The instantaneous power of TDS3000B oscillograph measures a function
The circumstance of instantaneous power dissipation in appraisal switch transistor is an indispensable link in project of design of equipment of every power source almost. When choosing to already economic benefits has the part that bears the dependability below abominable work requirement again (if pursue,the power field effect of 1 is in charge of) , this is a crucial link. While selection process includes to measuring electric current, undertake float ground is measured. Probe of the TekProbe interface of TDS3000B and probe of poor cent of P5205 high pressure and TCP202 electric current (and other a lot of probe) compatible. This kind of didymous configuration can offer accurate measurement result. Because,needing maximum pressure is relevant voltage (the V on circuit of field effect canal
Ds) receive the leakage in transistor - on source terminal, and both all not ground connection. So, resemble great majority oscillograph same, TDS3000B cannot be used at measuring float ground signal directly. When undertaking with TDS3000B safe float ground is measured, need the probe that need branch. P5205 is acceptability do not have ground connection signal and provide signal of ground of an odd termination to oscillograph. Before undertaking power is measured, the likelihood needs to pass " deflection is corrective " the program is mixed with balanced voltage the defer between voltaic probe. Of P5205 and TCP202 fixed match can amount to ± 2ns in, decrease defer error least. But, the combinative configuration of other probe needs to undertake deflection corrective. This one step is crucial, because voltage and voltaic contrail are time,the tiny deflection on may be in instantaneous power reading cause very big error. TDS3000B oscillograph has deflection corrective memory, can store the defer between probe needs minute of data. Undertake on a pair of probe when deflection is corrective, with same a pulse drive two probe, measure time to differ with cursor. Input this information deflection next in corrective memory (stock through perpendicular menu) . This work measure can store a defer that is opposite with probe is numeric. After deflection is corrective, by the graph 1 is shown (the effect of common field of a kind of power in switch power source is in charge of circuit) undertake probe joins.
The Autoset of TDS3000B oscillograph (automatic setting) the function can be used at installing initiative weaveform to show. Autoset can be through self-adjusting limits and scale on screen indication weaveform. The screen of chromatic liquid crystal of TDSA3000 oscillograph can show voltage, electric current and power weaveform with different color, eliminate thereby common promiscuous. Because have Tek Probe interface, 3 all undee numerical value numerate and scale is very precise - do not need completely to be added additionally deduce.
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