Rx–Fixed Triggers: #1 :N #2:N #3:N #4:N #5:N #6:N P0:N P1:N Z:N
Use the next setting to compensate for the oset in range that is due to the length of
waveguide connecting the transmitter, antenna, and receiver. Specify the total 2–way length
of waveguide, that is, the span from transmitter to antenna, plus the span from antenna to
receiver. The RVP900 range selection compensates for the additional waveguide length to
within plus–or–minus half a bin, and works properly at all range resolutions.
2–way (Tx+ Rx ) total waveguide length: 0 meters
5.2.6
Mt<n> — Triggers for Pulsewidth n
To configure pulse width triggers, type Mt with an additional argument for the pulse width
number.
You can configure specific trigger, transmit waveform, and FIR filter properties for the
indicated pulse width.
Triggers
Trigger parameters list the starting times (in microseconds relative to range zero), the
widths (in microseconds), and the active sense of each trigger generated by the internal
trigger generator.
Set a width to 0 to inhibit the trigger on that line.
The Start time can include an additional term consisting of the pulse period times a
fractional multiplier between -1.0 ... +1.0. This allows you to produce trigger patterns that
would not otherwise be possible, for example, a trigger that occurs half way between every
pair of transmitted pulses, and remains correctly positioned regardless of changes in the
PRF. If you do not want to use this term, enter this multiplier as 0, and is omitted from the
printout.
In the following example, Trigger #2 is a 10.0 μsec active–high pulse with a leading edge
that occurs precisely halfway between the zero–range of every pair of pulses. Similarly,
Trigger #6 is a 2.0 μsec active–low pulse with a falling edge that is nominally 5.0 μsec
prior to range zero, but that is advanced by 1.0 μsec for every millisecond of trigger period.
All other triggers behave normally, and have
fixed starting times that do not vary with the
trigger period.
RVP900 User Guide M211322EN-J
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