User manual

Publication No. 980935 Rev. M 3152B User Manual
Astronics Test Systems Operation 3-35
generate half-cycle sine waveforms where the
halves are separated by 1 µs delay intervals.
From this point you can ch
ange one or more of the half cycle
parameters just as they would be programmed for the standard
waveform generator. Use the following commands to select one of
the half cycle waveforms:
half:shap sin Selects
the sine waveform to be generated
using the half cycle function.
half:shap tri Selects
the triangular waveform to be
generated using the half cycle function.
half:shap squ Selects
the square waveform to be generated
using the half cycle function.
After you select the function and waveform, you may progr
am other
parameters to adjust the waveform specifically for your application.
You may
adjust the start phase for the sine and triangular
waveforms, or the duty cycle for the square waveform, and you may
program the amount of delay between the half cycles.
Chapter 5 contains
programming references that will allow you to
program all of the half cycle parameters.
Using the
Counter/Timer
You may use the 3152B as a counter/timer instrument. When using
this function, you may select the measurement function, gate time
,
and trigger level, and then hold the measurement until you
require a
reading. The reading is then
taken and passed to the host computer
for processing.
The 3152B cannot perform as a counter/timer and generate
waveforms at the same time. When
placed in counter/timer mode,
all waveform patterns are purged from the waveform memory,
and
the 3152B can be used only for measurements.
The counter/timer function provides a
means of measuring
frequency and timing characteristics of external signa
ls. Use the
commands given below to select the counter/timer mode and
set up
a measurement function.
func:mod coun Selects the Counter/Timer allowing
frequency
and time measurements on external signals.
Once you have selected the Counter/Timer mode, you may select
the specific measurement function. Available functions include:
• Frequency
• Period
• Period averaged