Acqiris U5309A User Manual page 13

Slope
Positive
Negative
Table 1.5 - Minimum and maximum value of the digital channel trigger. "Offset" and "range" refer to the channel's
current Vertical Offset and Vertical Range settings.
The hysteresis is configured automatically as a function of the vertical FSR, as follows:
Full Scale Range (Volts)
Table 1.6 - Minimum and maximum value of the digital channel trigger. "Offset" and "range" refer to the channel's
current Vertical Offset and Vertical Range settings.
Edge trigger slope
The trigger slope defines which one of the two possible transitions will be used to initiate the trigger
when it passes through the specified trigger level. Positive slope indicates that the signal is
transitioning from a lower voltage to a higher voltage. Negative slope indicates the signal is
transitioning from a higher voltage to a lower voltage.
The trigger time interpolator is only applicable to the external trigger input (TRG IN), it does not
operate on the channel trigger of the U5309A.
Trigger precision and resolution
The U5309A trigger time interpolator offers a resolution of 8 ps (nominal) and a precision of 15 ps RMS
(nominal) .
The channel trigger resolution and precision are both equal to 1 sample.
The accuracy of absolute trigger time is guaranteed (as specified in the datasheet) down to sample
rates 1/16 of the highest sample rate (1/32 of the highest sample rate with interleaving).
U5309A User's Manual
Min
= offset - range*127/256 + Hysteresis
= offset - range*127/256
5
2.5
1
0.5
0.25
= offset + range*126/256
= offset + range*126/256 - Hysteresis
Hysteresis (LSB)
6
6
8
8
14
1.4 Trigger
Max
Hysteresis (Volts)
0.12
0.06
0.03
0.016
0.014
13