GND
GND
U
in
10 * U
in
(+)
(+)
9 M
900 k
100 k
(+)
(–)
Figure 15.2:
Single
-
ended amplifier with passive probe
l
An inline resistor acts as a voltage divider using the input resistance of the
amplifier
l
The amplifier itself measures only
U
in
; the
total
input range is
10 * U
in
l
This can be done with any oscilloscope or the GEN DAQ Basic Amp
l
Oscilloscope probes are typically only +/
-
2% to +/
-
5% accurate
l
The probes used need compensation. The compensation range needs to
match the input amplifier's capacitance range.
GEN3i
340
I3763-3.1 en HBM: public
