PN 10795T 25
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
power meter 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).
C. Press the ON/SELECT button to enter the pulse population to memory. The display will blank
and the STATS annunciator will flash.
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