L3Harris HP-01, User Manual

Page: 59 / 66

Communication protocol 9-9
?RDF
Flag availability query command. The
reply
is in the format:
RDF=0+0x1 (x_rdy) +0x2 (y_rdy) +0x4 (z_rd
y) +0x08 (spectr_rdy)
First 3 least-significant bits refer to new
data availability (new data since last
FLD
or FLS or FLW or GDC queries are
available). 4th least-significant bit refers to
new spectrum availability (new spectrum
since last
SPC query are available).
Queries about total field (e.g. FLST or
FLD ) reset all first 3 least-significant bits.
Example: #H1?RDF*
Reply : RDF=8
Spectrum ready (0b1000)
Example:
#H1?RDF*
Reply : RDF=4
z-data ready (0b0100)
Example:
#H1?RDF*
Reply : RDF=15
x, y, z -data and spectrum ready
(0b1111)
?RDY
Spectrum and Data availability query
command. The reply is in the format:
RDY=x
where:
Y: new spectrum and data are both
available
N: no spectrum and no data are available
(since last SPC, FLD, FLW, FLS, or GDC
queries)
Example: #H1?RDY*
Reply : RDY=Y
?RNG
Sensor range query command.
The reply is in the format:
RNG=x
Where x reports on the span
A : Automatic range
H : High range
L : Low range
Example: #H1?RNG*
Reply: RNG=L
?SPA
Span mode query command.
The reply is in the format:
SPA=x
where:
x is an index to indicate the span
0 : 1000Hz span, 3Hz resolution
1 : 100Hz span, 1Hz resolution
2 : 30Hz span, 0.3Hz resolution
3 : 20Hz span, 0.2Hz resolution
Example:
#H1?SPA*
Reply: SPA=0
?SPC
Spectrum query command. The reply is
the structure containing the spectrum info.
See Spectrum Structure Paragraph.
Example: #H1?SPC*
?TMP
Temperature and humidity query
command. The reply is in the format:
TMP=t;h
where:
t is the temperature in °C
h
is the humidity in %
Example: #H1?TMP*
Reply: TMP=29.49;45.1