SAMPle3:COUNt:PRETrigger {<count> | MIN | MAX | DEF}, (@<ch_list>)
SAMPle3:COUNt:PRETrigger? {(@<ch_list>) | MIN | MAX | DEF}
Sets the number of measurements (samples) the instrument takes before the trigger on the specified channels.
These SCPIs are supported on the DAQM909A Digitizer module only.
Parameter Typical return
<count> = 0 to 50,331,583 samples
MIN: 0
MAX: Refer to the table below.
Number of DAQM909A installed SAMPle3:COUNt:PRETrigger MAX
1 DAQM909A card installed 50331583
2 DAQM909A cards installed 25165759
3 DAQM909A cards installed 16777151
DEF: 0
+0
Sets Digitizer channel 201 to take 1000 samples before the trigger
SAMP3:COUN:PRET 1000,(@201)
– The pretrigger sample count must be less than the sample count set with the SAMPle3:COUNt command, and
there must be at least one post-trigger sample: Pretrigger Sample Count ≤ Sample Count - 1
SAMPle3:RATE {<rate> | MIN | MAX | DEF}, (@<ch_list>)
SAMPle3:RATE? {(@<ch_list>) | MIN | MAX | DEF}
Sets the sample rate on the specified channels.
These SCPIs are supported on the DAQM909A Digitizer module only.
Parameter Typical return
<rate> = { 1.5625K| 3.125K| 6.25K| 12.5K| 25K| 50K| 100K| 200K| 400K| 800K}
MIN: 1.5625k
MAX: 800k
DEF: 100k
+1.00000000E+05
Sets the default sample rate for Digitizer channel 201
SAMP3:RATE DEF,(@201)
– For each module, you are allowed to select one sample rate for all TIME filter mode channels, and another
sample rate for all FREQUENCY filter mode channels. Thus, changing sample rate on a channel will change the
sample rate on the other channels with the same filter mode.
222
Keysight DAQ970A/DAQ973A Programming Guide
2 SCPI Programming
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