Programming
EPM2000/EPM2000e Reference Guide
51
4. If one of the annunciators on the LCD is lit (signaling Statistics mode) or flashing (signaling
Average mode), place the instrument in Normal mode by pressing [J], [EXP], [W], or [Hz].
5. Press [SET] > [J] to enter the Responsivity (Rv) of the detector.
6. On the numeric keypad, enter the Rv as printed on the detector label.
7. Use the [UP]/[DOWN] keys to adjust the Rv exponent.
8. Press [ENT] to end the Rv entry.
9. Unblock the laser beam or start the laser. Verify proper beam alignment on the probe
surface.
Note: If the input signal is too great in amplitude for the selected range, the LCD will
flash OL; use the UP arrow key to select a higher range. If the input signal is too small
in amplitude for the selected range, the TRG annunciator will not be activated; use the
DOWN arrow key to select a lower range.
10. Block the laser beam or stop the laser in preparation for an exposure. The TRG annunciator
should deactivate.
11. Press [EXP] to enter the Exposure mode. Unblock the laser beam or start the laser to begin
the Exposure accumulation. The TRG annunciator should activate again and the LCD should
begin counting steadily upwards.
12. Block the laser beam, stop the laser or press [EXP] to end the Exposure accumulation. The
TRG annunciator should deactivate.
13. Press [ZERO] to reset the LCD to zero before taking another exposure measurement.
EXPOSURE MODE-SPECIFIC COMPUTER INTERFACE COMMANDS
Measurement Mode
Instructs the instrument to enter or exit the exposure operating mode.
Command Form
CHannel<A|B|ALL>MEAsure<POWER|ENERGY>
or
Channel <A|B|ALL> MEAsure EXPosure <ON|OFF>
Examples
Input Instrument Reply
Ch a mea exp on <enters exposure mode and begins accumulation>
Ch a mea exp off <stops accumulation>
Ch a mea energy <enters energy mode>
Zero
Resets the accumulated exposure measurement.
Command Form
CHannel <A|B|ALL> ZERO
Example
Input Instrument Reply
Ch a zero <resets accumulated exposure>
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