Keysight 53210A - Bandwidth Limiting (Low-Pass) Filter; Figure 4-2 Using AC Coupling to Reach Trigger Points

4 53210A Input Signal Conditioning
110 Keysight 53210A User’s Guide
Figure 4-2 Using AC Coupling to Reach Trigger Points.
Settling Time Between DC and AC Coupling
There is an inherent settling time when changing from DC to AC coupling. As a
measure of this time, a signal with a 5V DC component (DC coupled) will typically
center around 0V (AC coupled) in one second.
Coupling Example
//period measurement of expected 10 MHz signal,
//maximum resolution, use channel 1
CONF:PER 0.1E-6,MAX,(@1)
INP:COUP AC //set AC coupling
Bandwidth Limiting (Low-Pass) Filter
V
U
V
L
V
C
V
U
V
L
0V
AC coupling
0V
DC coupling
V
C
programmed trigger level
}
}
Hysteresis window
trigger point
reset point
input signal with DC offset