RPR-4000
Operations manual
REV 8-21 27
Page 1 – Pulser settings (1/2)
Label Parameter Data range Units Data Type
FREQ Pulse
frequency
00.030000 to
21.999999
MHZ Numeric
PW CYCLES Pulse width 0000 to 4444 Numeric
PW USEC Pulse width 000.0 to 200.0 USEC Numeric
FREQ Pulse Frequency
The acceptable frequency range is 30 kHz to 22 MHz (Data range from 00.030000 to
21.999999). The internal synthesizer output can be disabled by entering 00.000000.
PW CYCLES / PW USEC Pulse width (# cycles or time)
The pulse width may be entered in increments of time or number of cycles.
If entered as time the pulse width will be limited so as to yield a maximum duty cycle of
1%. The number of cycles for the time specified will be calculated and displayed which
may include part of a cycle.
Entering a setting over 200 μs will generate the error ‘ILLEGAL COMMAND’.
The minimum pulse width corresponds to 1 cycle at 22 MHz, or about 4.5 ns. However,
the frequency at which you can generate a clean 1 cycle pulse of RF depends upon your
model of RPR-4000 and the load that you are driving.
If the setting entered exceeds 1% duty cycle, the pulse width will be limited to the
maximum number of cycles while maintaining 1% duty cycle.
If entered as cycles the total time for the specified number of cycles will also be
calculated and displayed.
If the setting entered exceeds 1% duty cycle the pulse width will be limited to the
maximum number of cycles while maintaining 1% duty cycle.
The message ‘MAX DUTY CYCLE’ will be displayed.
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