– The sample time resolution is 1 μs, the aperture resolution is 2 us, and the actual hardware resolution is not
exactly 1 μs. There are cases where a sample time value, rounded to the nearest hardware resolution, will result in
a smaller value than aperture when rounded to 2 μs. This will create error - 221,"Settings conflict; cannot meet
requested timing; SAMP:TIM changed".
– After setting the sample count, source, and delay time, you must place the meter in the "wait-for-trigger" state
using the INITiate or READ? command. A trigger is not accepted from the selected trigger source (see
TRIGger:SOURce command) until the instrument is in the "wait-for-trigger" state.
– The interval may be set to any value from the absolute minimum described above to 3600 seconds. However, the
value is rounded to the nearest step. For dc measurements, the step size is 1 μs. For ac measurements, it is ac
bandwidth dependent.
– The instrument sets the sample timer to 1 second after a reset ( *RST command) or an instrument preset
(SYSTem:PRESet command).
Keysight DAQ970A/DAQ973A Programming Guide 219
2 SCPI Programming
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