Scientech H410 Vector - Manual (Page 21)

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A. To Measure Energy (J):
Note: Calorimeters can only measure single shot energy pulses with the time between pulses
dependent on the calorimeter delay setting from section 5J. With the calorimeter delay
entered, the H410 will display the "trig" annunciator and the single pulse energy after the
first pulse is delivered. The "trig" annunciator will then disappear after the calorimeter
delay time has elapsed prompting you to fire another pulse. Do not fire another pulse until
the “trig” annunciator disappears. If you do, the H410 resets the time delay and ignores the
sequential pulse altogether.
Note: Make sure the calorimeter delay, set in section 5J, is shorter that the time out set in section
10. If not the H410 will go into sleep mode before the pulse energy is displayed.
i. Press the MODE button. A menu cycle of J, W, CAL, tO and cd will begin.
ii. Press the ON/SELECT button when the J annunciator appears and the joules mode will be activated.
iii. The energy level of each laser pulse will be displayed.
B. To Measure Power (W):
Note: The speed-up circuit is not active in AUTO range.
Note: The average power mode displays the average power (watts) of repetitively pulsed lasers or
continuous wave lasers.
i. Press the MODE button. A menu cycle of J, W, CAL, tO and cd will begin.
ii. Press the ON/SELECT button when the W annunciator appears and the watts mode will be activated.
iii. Press the CANCEL button to zero the display.
iv. The power will be displayed.
8. To Measure a Statistical Run of Single Shot Energy Pulses:
Note: Calorimeters can only measure single shot energy pulses (time between pulses is dependent
on the calorimeter delay from section 5J). With the calorimeter delay entered, the H410
will display the "trig" annunciator and the single pulse energy after the first pulse is
delivered. The "trig" annunciator will then disappear after the calorimeter delay time has
elapsed prompting you to fire another pulse. Do not fire another pulse until the “trig”
annunciator disappears. If you do, the H410 resets the time delay and ignores the
sequential pulse altogether.
Note: Make sure the calorimeter delay, set in section 5J, is shorter that the time out set in section
10. If not the H410 will go into sleep mode before the pulse energy is displayed.
Note: Do not use AUTO range when making a statistical run.
Note: Do not go from the Average Power Mode to Stats since the range will be too high. Select
the range manually.
Note: Each time a new stats run begins, data from the previous run is lost.
Note: To exit the statistical mode at any time, press the OFF/CANCEL button.
The statistics mode will collect data on a pulse population of up to 1000 pulses. At your prompting, the
indicator will display the number of pulses delivered, average energy, minimum energy, maximum energy,
standard deviation, and coefficient of variation. When the statistics mode is selected, the energy mode is
automatically activated regardless of the mode previously selected. Select the appropriate range for the pulse
energy level to be measured. It is very important to select the most appropriate range. If you have selected a
manual range and the laser pulse(s) has overflowed the maximum energy of the range, OF will be displayed
when the data is recalled. You should then select a higher range.
To enter into the statistics mode:
A. Press the RANGE and MODE buttons simultaneously. The number of pulses in the last statistics run
will appear in the display and the SET annunciator will flash.
B. Use the RANGE (count up) and MODE (count down) buttons to change the display to the desired
number of pulses to include in the statistics run (up to 1000).