Operation Manual
SYSTEM
OCR-504 Multispectral Radiometer
SECTION
E - CONFIGURATION
transmit frames. On-board electronics, such as the Analog-to-Digital converters
used to sample each sensor, may limit how fast a telemetry frame can be
composed. Configuration parameters like the telemetry and/or network baud
rates are important in determining how quickly one frame can be transmitted
before the next. While in network operation, saturation
of the Network Master’s
telemetry interface, caused by too many networked instruments broadcasting
their telemetry at the same time, may slow down the frame rate of some or all
instruments in the system. Therefore, the actual frame rate realized during
normal operation cannot be any faster than the limitations imposed by these
conditions. In addition, some of these factors may vary during normal operation,
making the determination of a constant frame rate impossible. Providing a
maximum frame rate slower than what the instrument is capable of providing
will help pace the output of each frame evenly. Generally, an OCR-504 cannot
exceed a frame rate faster than 7.5 Hz, even under the best of conditions.
Only certain standard frame rates are accepted by this parameter, as shown in
the table below:
Frame Rate (Hz)
0.125
0.25
0.5
1
2
4
8
10
12
0 (AUTO)
When modifying this parameter with the “
set
” command, you must enter one
of these numbers as the value parameter. Any numerical values that are in
between the values in the table will be rounded up to the nearest standard
frame rate. To specify an automatic (AUTO) frame rate, input "0" as the value
parameter. This will cause the instrument to output frames as fast as possible.
Specifying a frame rate faster than is practically possible will not force the actual
frame rate to that level. The instrument will only transmit as fast as possible for
the given operating parameters. This is essentially the same as specifying an
AUTO frame rate. In addition, frames are always transmitted as a whole as
much as possible. Once a frame starts transmitting, it is transmitted
continuously until the frame is completely output. Specifying a frame rate of, for
