PICO PicoScope 3204 Handbuch Seite 18

PicoScope 3000 series
17
Arguments
Returns
5.2.7
ps3000_set_siggen
long ps3000_set_siggen (
This function is used to enable or disable the
functions are not available if the oscilloscope is in
The signal generator is not available on the PicoScope 3204 oscilloscope model. A 1kHz square
wave output is made available and can be set with this function. See remarks and
more information.
handle, the handle to the required device.
timebase, a code between 0 and the maximum timebase (variant dependant).
Timebase 0 is the fastest timebase, timebase 1 is twice the time per sample as
timebase 0, timebase 2 is four times, etc.
no_of_samples, the number of samples required. This value is used to
calculate the most suitable time unit to use.
time_interval_ns, a pointer to the time interval, in ns, between readings at
the selected timebase. If a null pointer is passed, nothing will be written here.
time_units, a pointer to the most suitable time units to return data in, when
calling ps3000_get_times_and_values. If a null pointer is passed, nothing will be
written here.
oversample, the amount of oversample required. An oversample of 4 would
quadruple the time interval and quarter the maximum samples but would
increase the effective resolution by one bit. the increase in resolution given by
oversampling can be calculated from the equation below:
Increase in resolution (bits) = ( log ( oversample ) ) / ( 2 log ( 2 ) )
max_samples, A pointer to the maximum samples available. The maximum
samples may vary depending on the number of channels enabled, the timebase
chosen and the oversample selected. If this pointer is null, nothing would be
written here.
if all parameters are in range, otherwise 0.
1
short handle,
short wave_type,
long
long
float increment,
short dwell_time,
short repeat,
short dual_slope)
start_frequency,
stop_frequency,
signal generator and sweep functions. Sweep
streaming mode.
Copyright 2005 Pico Technology Limited. All rights reserved.
specifications for