PICO picoscope 3204, Руководство пользователя

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PicoScope 3000 Series User Guide
29
Copyright 2005 Pico Technology Limited. All rights reserved.
PS3000044 1.4
3.5
Using different modes
3.5.1
Introduction
The previous section on advanced features supplied the programmer with extended
information on PicoScope 3000 Series PC Oscilloscopes. The C sample program,
ps3000con.c
, demonstrates how to use the functions of the driver software, and
includes examples showing how to use each of the modes available.
3.5.2
Using block mode
This is the general procedure for reading and displaying data in block mode:
1 Open the oscilloscope using ps3000_open_unit
2 Select channel ranges and AC/DC switches using ps3000_set_channel
3 Using ps3000_set_trigger , set the trigger if required
4 Using ps3000_get_timebase , select timebases until the required ns per sample is
located
5 If required, set the signal generator frequency using ps3000_set_siggen
6 Start the oscilloscope running using ps3000_run_block
7 Wait until the oscilloscope says it is ready using ps3000_ready
8 Transfer the block of data from the oscilloscope using ps3000_get_values or
ps3000_get_times_and_values
9 Display the data
10 Repeat steps 6 to 9
11 Stop the oscilloscope using
ps3000_stop .
3.5.3
Using streaming mode
This is the general procedure for reading and displaying data in streaming mode:
1 Open the oscilloscope using ps3000_open_unit
2 Select channel ranges and AC/DC switches using ps3000_set_channel
3 Start the oscilloscope running using ps3000_run_streaming
4 Transfer the block of data from the oscilloscope using ps3000_get_values
5 Display the data
6 Repeat steps 3 to 5 as necessary
7 Stop the oscilloscope using
ps3000_stop
3.5.4
Using ETS mode
This is the general procedure for reading and displaying data in ETS mode:
1 Open the oscilloscope using ps3000_open_unit
2 Select channel ranges and AC/DC switches using ps3000_set_channel
3 Using ps3000_set_trigger , set the trigger if required
4 Set ETS mode using ps3000_set_ets
5 Start the oscilloscope running using ps3000_run_block
6 Wait until the oscilloscope says it is ready using ps3000_ready
7 Transfer the block of data from the oscilloscope using ps3000_get_times_and_values
8 Display the data
9 Repeat steps 5 to 8 as necessary
10 Stop the oscilloscope using
ps3000_stop
Only the 3204/5/6 variants provide this function.