Filter
Top Products
USING THE COMBISCOPE INSTRUMENTS 3 - 11
3.3.3 Waveform measurements
The following figure shows the terms used for pulse measurements and the key
words that are used as header nodes in the measurement instructions.
The reference high and low parameters determine the desired interval for rise
time and fall time measurements. The default low and high references are 10%
and 90% of the pulse amplitude (= HIGH - LOW).
Default REFerence LOW =LOW + 0.1
*
(HIGH - LOW)
Default REFerence HIGH =LOW + 0.9
*
(HIGH - LOW)
In a similar way, the reference middle parameter determines the desired interval
for pulse width (PWIDth, NWIDth) and duty cycle (PDUTycycle, NDUTycycle)
measurements. When defaulted, the reference middle value is assumed to be at
50% of the amplitude.
Default REFerence MIDDle =LOW + 0.5
*
(HIGH - LOW)
TMINimum
MINimum
FALL
OVERshoot
RISE
PREShoot
AMPLitude
PTPeak
NWIDthPWIDth
PERiod
LOW
HIGH
FALL TIME
FALL
PREShoot
MAXimum
TMAXimum
RISE TIME
RISE
OVERshoot
REFerence
HIGH
REFerence
MIDDle
REFerence
LOW
ST7154
Figure 3.2 Pulse characteristics