Scientech H410 Vector - Manual (Page 16)

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B. Press the ON/SELECT button when the CAL annunciator appears. A second menu cycle of CAL 1,
CAL 2, Attn and SPd will start.
C. Press the ON/SELECT button when the CAL 2 annunciator appears. The average power (W) mode will
automatically be selected and SET CAL will flash.
D. Direct the laser beam through the calibrated beam splitter onto both the pyroelectric detector and the
calorimeter transfer standard.
E. Adjust the power reading of the H410 by using the RANGE (count up) and MODE (count down)
buttons to agree with the transfer standard.
F. Press the ON/SELECT button. The indicator is now calibrated and will return to the last operational
state.
G. Press and hold the OFF/CANCEL until the display blanks to save the setting.
H. Press the ON/SELECT button to turn the H410 back on.
10. Attenuation Factors:
Note: You must enter an attenuation factor of 1.0 when not using an attenuator.
Note: You must save all settings by pressing and holding the OFF/CANCEL button until the
display blanks. If the H410 is turned off, by using the ON/OFF slide switch, before settings
are saved they will be lost.
The attenuation factors of optics can be entered into the H410 so the displayed value will automatically
compensate for the amount of attenuation. For example, assume a beam splitter is being used that transmits
75% and reflects 25% of the beam. If the H410 is set up to measure the reflected beam the attenuation could be
set up as follows:
• An attenuation factor of 1 would display the value of the reflected beam.
• An attenuation factor of 3 would display the value of the transmitted beam.
• An attenuation factor of 4 would display the value of the source.
To enter into the attenuation factor mode:
A. Press the MODE button to start a menu cycle of J, AVG J, W, CAL and tO.
B. Press the ON/SELECT button when the CAL annunciator appears. A second menu cycle of CAL 1,
CAL 2, Attn and SPd will start.
C. Press the ON/SELECT button when the Attn annunciator appears. The current attenuation factor will be
displayed and SET will flash.
D. Press the RANGE (count up) and MODE (count down) buttons to change the attenuation factor to the
desired value. Values of 0.01 to 99.99 may be selected.
E. Press the ON/SELECT button. The attenuation factor is now active and the indicator will return to the
last operational state.
F. Press and hold the OFF/CANCEL until the display blanks to save the setting.
G. Press the ON/SELECT button to turn the H410 back on.