Coherent FieldMaxII-TOP Manuel d'utilisateur télécharger pdf (Page 70)

FieldMaxII-TOP User Manual

Pyroelectric

Watts Mode

Using an attached pyroelectric sensor, FieldMaxII-TOP

can measure power from a series of pulses. While the

instrument is triggering, power measured during each

display interval appears in the numeric display as watts.

This is known as burst power (see the following para-

graph). At least two pulses must be captured in one

display cycle (approximately 1/3 second) to calculate

power. If the instrument is not triggering, a series of

dashes—indicating “no power”—appears in the numeric

display.

Burst power (see Figure 18) refers to power in watts, as

computed by the sum of the energy pulses received in

one display cycle (approximately 1/3 second), and the

sum of the time intervals between those pulses. The

displayed value represents the power of a continuous

stream of pulses that the burst represents.

Figure 18. Burst Power

1 2 ... 65 66 67 68 69 70 71 72 73 74 75 ... 117 118

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Coherent FieldMaxII-TOP Manuel d'utilisateur Page 70