User`s guide

92 53220A/53230A User’s Guide
3 53220A/53230A Measurements
INPut{1|2}:LEVel{1|2} or INPut{1|2}:LEVel{1|2}:RELative
INPut{1|2}:SLOPe{1|2}
SENSe:GATE:STOP:HOLDoff:SOURce
Measurements taken without changing at least one of these settings could
result in values of approximately 0 seconds, as the measurement starts and
stops on the same edge (slope) at approximately the same time.
2-Channel Time Interval Measurement Example
// use CONFigure to set up a 2-channel time interval
// measurement - start on ch. 1, stop on ch. 2
*RST // reset to start from known state
SYST:TIM 5.0 // set a 5s measurement timeout
CONF:TINT (@1), (@2) // configure 2-ch measurement
INP1:LEV:AUTO ON // enable auto-level on ch. 1
INP2:LEV:AUTO ON // enable auto-level on ch. 2
INP1:LEV1:REL 10 // set ch.1 threshold level to 10%
INP2:LEV1:REL 10 // set ch.2 threshold level to 10%
INP1:SLOP POS // start meas on ch.1 rising edge
INP2:SLOP POS // stop meas on ch.2 rising edge
SENS:GATE:STOP:HOLD:SOUR TIME // hold off gate close
SENS:GATE:STOP:HOLD:TIME 200E-9 // hold off for 200 ns
SENS:GATE:STAR:SOUR IMM // start meas when gate rec’d
SENS:GATE:STOP:SOUR IMM // stop meas when holdoff done
SENS:TINT:GATE:SOUR ADV // enable gate settings
READ?
Notes
1. Auto-level is enabled on both channels to specify relative threshold levels of
10% of the peak-to-peak signal level. The measurement starts on a positive (ris-
ing) edge on channel 1, and stops on a positive edge on channel 2.
2. A gate stop hold off is specified to select the desired rising edge on channel
2 and, therefore, the interval to be measured.