Operation Manual
SYSTEM
OCR-504 Multispectral Radiometer
SECTION
D - OPERATION
ASCII
T
ELEMETRY
–
O
PTICAL
D
ATA
O
NLY
,
I
N
E
NGINEERING
U
NITS
Data is presented as tab-delimited ASCII text. Only optical channel data is
provided, in engineering units; this is known as the “short” frame type.
Relevant configuration parameters:
frametype: short
usecal: on
Field Name
Field
Size
(bytes)
Description
Instrument
6
A unique 6 character AS formatted string
denoting the start of a frame of telemetry. For
irradiance sensors, the instrument string is
“SATFI4”; for radiance sensors, the string is
“SATFR4”.
Serial Number
4
(1
– 10
allowed)
An AS/AI formatted string denoting the serial
number of the instrument. This field combined
with the INSTRUMENT field uniquely identifies
the instrument. This combination is known as
the frame header or synchronization string.
This is normally a four-character field.
Tab
1
Tab delimiter.
Channel (
1
)
10
typical/
max
An AF formatted value representing the
calibrated output (engineering units) from the
first optical channel. For an irradiance sensor,
the units are “uW/cm
2
/nm”; for a radiance
sensor, the units are “uW/cm
2
/nm/sr”.
Tab
1
Tab delimiter.
Channel (
2
)
10
typical/
max
An AF formatted value representing the
calibrated output (engineering units) from the
second optical channel. For an irradiance
sensor, the units are “uW/cm
2
/nm”; for a
radiance sensor, the units are “uW/cm
2
/nm/sr”.
Tab
1
Tab delimiter.
Channel (
3
)
10
typical/
max
An AF formatted value representing the
calibrated output (engineering units) from the
third optical channel. For an irradiance sensor,
the units are “uW/cm
2
/nm”; for a radiance
sensor, the units are “uW/cm
2
/nm/sr”.
Tab
1
Tab delimiter.
