SpectralLED® RS-7 USER MANUAL
Page 52
4.5
Integrated Absolute Units, Colorimetry
4.5.1
UNI – Set Units:
Radiometric (irradiance or radiance, µW/cm² or µW/cm²/sr),
Photometric (illuminance or luminance, lm/m
2
[lux] or cd/m
2
[nits]),
or Internal Units (0-100%)
Selects between radiometric (irradiance, radiance), photometric (illuminance, luminance), and internal (0-100%)
as units of integrated energy. The internal units (
UNI
= 2) represent the dimensionless irradiance response of the
monitor photodiode, scaled as 0% (off) to 100% (matched to the maximum drive current as configured for each
channel). Note that the unit’s calibration type,
CTY
, and irradiance mode setting,
IRR
, can be queried to
determine whether the units are for a Radiant source (µW/cm²/sr, cd/m
2
) or an Irradiant source (µW/cm²,
lm/m
2
).
Syntax:
UNI
[0|1|2]
set units to radiometic (0), photometric (1), or internal 0-100% (2)
Examples:
uni
report current units setting
1
units are photometric (lux or nits)
out
report current output level in photometric units
351.24
uni0
change units to radiometric (µW/cm
2
or µW/cm
2
/sr)
Ok
out
report current output level in radiometric units
185.96
uni2
change units to internal photodiode
Ok
out
report current output level 0-100%
75.15
this figure represents the channel which is operating at the highest power level
4.5.2
- OUT - Integrated output power level of OSP as UNI
Sets or reports the RS-7 integrated (sum of all active channels) output level using the units set by
UNI
. When
setting the output level, the “Ok” response will not be returned until the RS-7 has settled to an accuracy of
STP
percent.
Syntax:
OUT
report current output level in
UNI
units
OUT
[level]
set the output level to
UNI
units
where [level] is an ASCII float.