The following parameter allows you to choose if RVP900 attempts to run its standard
processing algorithms, even when a custom trigger pattern has been selected through the
SETPWF command. Usually, this does not make sense, so the default setting is 0:Never.
Bit–12 of SOPRM word #10 is the host computer's interface to this function when the
0:Never case is selected (see 8.4 Setup Operating Parameters (SOPRM) (page 239)).
Process w/ custom trigs – 0:Never , 1:User, 2:Always : 0
Additional SNR
This parameter provides an additional 6 dB of SNR. It can be disabled to provide
compatibility with legacy systems.
Use High–SNR 16–bit packed timeseries format: Yes
Free-running Rays
This parameter controls the rate at which the RVP900 processes free– running rays. This
prevents rays from being produced at the full CPU limit or I/O limit of the processor
(whichever was slower); which could result in highly overlapping data being output at an
unusably fast rate. This behavior only occurs when running without angle syncing, such as
during IRIS manual and RHI scans.
To make these free–running modes more useful, you can establish a minimum
hold-o
between successive rays, expressed as a percentage of the number of pulses contributing to
each ray:
• 100% (default) produces rays whose input data do not overlap at all, that is, whose rate
is exactly the PRF divided by the sample size.
• 0% gives the unregulated behavior in which no minimum overlap is enforced and rays
can be quickly produced.
Limits: 0 ... 100%
Minimum freerunning ray holdoff : 100% of dwell
Saturation Algorithm
RVP900 uses a statistical saturation algorithm that estimates the real signal power correctly
even if the IF receiver is over-driven (that is, for input power levels above +4 dBm). The
algorithm extends the headroom above the top end of the A/D converter, although the
accuracy decreases as the overdrive becomes more severe. This parameter allows you to
place an upper bound on the maximum extrapolation that is applied. Choose 0 dB to disable
the algorithm.
Limits: 0 dB ... 5 dB
Chapter 5 – TTY Non-volatile Setups
109
To Next Page
Loading...