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(10) Dark Estimation
Set and Query Dark Estimation Function
Syntax
Command
:DARK:ESTimate
<1/0/ON/OFF >
Query
:DARK:ESTimate?
Response
<1/0(NR1)>
Description
Command
Sets the dark estimation function.
If the modulation frequency (
:PULSe:FREQuency
) is changed when this
setting is set to ON, the dark value estimation is executed.
When the command is accepted, the measured value is cleared and the
instrument enters the non-measurement state.
Query
Queries the currently set dark estimation function.
Example
Enable the dark estimation function.
:DARK:EST ON
:DARK:EST?
1
Sets the modulation frequency and acquires the dark estimation result.
:PULS ON
:PULS:FREQ 61.0
:DARK:EST:RES?
1
Note
• Be sure to check the description of
DARK:ESTimate:RESult?
.
If the modulation frequency (
:PULSe:FREQuency
) is changed when this setting is set to
ON, be sure to check that the estimation result has succeeded (the response
of
:DARK:ESTimate:RESult?
is 1).
However, the dark estimation fails under the following conditions.
(1) The modulated light function is OFF.
(2) No all dark measurement has been performed even when the modulated light
function is ON.
• When performing the dark estimation, set the modulated light function to ON beforehand.
After that, perform the dark measurement in all ranges of all colors. At this time, it is
recommended to set the number of average times of the dark measurement to 10 or
more.
• Use the dark estimation with a modulation frequency of ± 5 Hz or less after the dark
measurement has been performed.
When you make a large change in the modulation
frequency, do not use the dark estimation and be sure to perform the dark measurement.
Even when the dark estimation result is PASS, the correct dark value may not be
acquired.