User Guide
- 16
–
8.1.2
Press the
start /stop
button to open the shutter. The open LED indicator will
illuminate. The display will show three (3) digits (XXX). The three digit number
shown will indicate the percentage of maximum iris opening.
8.1.3
Pressing the up button will increase the light output and pressing the down
button will decrease the light output. For fine adjustments the displayed iris
opening will increase or decrease by 1% increments for each time the up or
down button is pressed.
8.1.4
For coarse adjustments of 10% increments, press and hold the up or down
button to rapidly increase or decrease the light output.
8.1.5
Press the start /stop button to close the shutter. The open LED indicator will
turn off.
8.1.6
For any setting at 99% or less, the S2000 will record the optical output intensity
using internal sensors for the Closed-Loop Feedback circuit. Each subsequent
exposure will automatically generate the same optical output intensity, even as
the lamp ages. As a result of lamp aging, subsequent exposures may display a
higher iris open percentage value; however, the output intensity will be
consistent with the original setting (+/-5% or 200mW/cm2, whichever is
greater).
8.2 Adjusting the Light Output in the Absolute Mode
8.2.1
Set your S2000 to Level Mode by pressing the Mode button until the LEVEL
LED on the front display is illuminated. The LED display shows an absolute
value of Irradiance in W/cm2. This value is referred to as a SET POINT.
Note
: While in Level Mode, pressing the
start/stop
button will manually
open the shutter until the
start/stop
button is pressed again to close
the shutter. The timer function will not be activated.
Note:
The shutter must be in the open position to make adjustments to the iris
position.
Note 1
: The S2000 must be calibrated using the R2000 Radiometer. In
absolute mode the front panel CAL and Closed-Loop Feedback
LEDs will be illuminated.
Note 2
: Removing the light guide at any time from the front panel light
guide port will require re-calibration of the S2000.
Note:
Closed Loop Feedback shut-off @exposure time of .3 sec and
lower.