Pulse Repetition Frequency - Avtech AV-1002-C-KMP2 Instructions Manual

PECIFICATI
PULSE REPETITION FREQUENCY
The PRF is continuously variable from 1Hz to 10MHz in 7 ranges, each range providing
a ratio of approximately 10 between its highest and lowest frequency.
DELAY
The delay between the SYNC output or the external trigger is variable from 10ns to 0.5
sec in eight ranges. Delay is variable over 75% of the pulse period up to 1MHz and
decreasing to 50% at 10MHz.
PULSE WIDTH (AND DUTY CYCLE)
Pulse width is measured at the 50% amplitude point, and is continuously variable from
50ns to 0.5 sec.Duty cycle may range up to 80% at 1 MHz and 50% at 10MHz. Higher duty
cycles may often be obtained by reversing the Polarity switch, and adjusting the baseline
to obtain an inverted pulse.
RISE/FALL TIMES
The rise and fall times are measured from the 10% to 90% amplitude levels with the output
terminated into 50Q. The rise and fall times are fixed at less than 5 ns.
BASELINE
The baseline, or offset, of the main output pulse is determined by a one-turned control.
When the amplitude is set on the 10V range, the baseline is continuously variable between
+10V and -10V. When in the 5V and 1V ranges, the baseline is continuously variable
between + 5V and -5V. (This is because in the 5V and 1V ranges, a 50Q resistor is placed
in series with the output and the load. This reduces the maximum output level, but provides
backmatching which tends to reduce reflections and other waveform distortions.) Note
that the sum of the baseline offset and the pulse amplitude can not exceed + 10V, and
that all of these values are valid only for a 50Q load.
AMPLITUDE
The amplitude of the main output is continuously variable between zero and ten volts, with
the polarity controlled by the polarity switch. The amplitude can be varied in three ranges,
from 0 to 1V, 0 to 5V, and 0 to 10V. The lower two ranges switch in a 50Q backmatching
resistor onto the output, for improved waveform quality. The 10V range does not have any
backmatching. Note that the sum of the pulse amplitude and the baseline offset can not
exceed + 10V, and that all of these values are valid only for a 50Q load.