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PicoScope 2104 & 2105 PC Oscilloscope User Guide
18
Copyright 2006 Pico Technology Limited. All rights reserved.PS2100044-1.0
3.3.13
ps2000_set_ets
long ps2000_set_ets ( short handle,
short mode,
short ets_cycles,
short ets_interleave )
This function is used to enable or disable ETS (equivalent time sampling) and to set
the ETS parameters.
Arguments
handle
, the handle to the required device.
mode:
- PS2000_ETS_OFF
(
0
) - disables ETS,
- PS2000_ETS_FAST
(
1
) - enables ETS and provides
ets_cycles
of
data, which may contain data from previously returned cycles,
- PS2000_ETS_SLOW
(
2
) - enables ETS and provides fresh data every
ets_cycles
cycles. This takes longer to provide each data set, but the
data sets are more stable and are unique.
ets_cycles
, specifies the number of cycles to store: the computer can
then select
ets_interleave
cycles to give the most uniform spread of
samples.
ets_cycles
should be between two and five times the value
of
ets_interleave
.
ets_interleave
, specifies the number of ETS interleaves to use. If
the sample time is 20 ns and the interleave 10, the approximate time
per sample will be 2 ns.
Returns If ETS is enabled, the effective sample time will be returned.
0
if ETS is disabled or one of the parameters is out of range.