Scientech S310 Vector - Manual (Page 31)

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3. Pyroelectric Watts and Joules Modes:
Compare peak voltage to energy (joules) or power (watts) reading displayed on the S310 to determine V/J or
V/W constant to use when looking at the analog output.
In power (watts) and energy (joules) mode, the peak voltage of a laser pulse is directly proportional to the power
energy level:
W = Vpk/S
where:
Vpk = peak voltage from the analog output
S = analog output sensitivity (V/W) ≈ 3 V/range (W)
(for example, on the 3 mW range, S ≈ 3 V/.003 W = 1000 V/W)
J = Vpk/S
where:
Vpk = peak voltage from the analog output
S = analog output sensitivity (V/J) ≈ 3 V/range (J)
(for example, on the 3 mJ range, S ≈ 3 V/.003 J = 1000 V/J)
4. Ultra  Calorimeter:
The analog output voltage is approximately 3 volts full scale. With an Ultra calorimeter the digital display will
read up to 300 watts, even though the Ultra Calorimeter is only rated for 150 watts. To calculate power from the
analog output voltage use the following equation.
Where: V = analog output voltage (V)
[0.0332(S)] - [3 x 10 -5 ] S = Ultra sensitivity (mV/W)
W= V