GEN7iB
344
UNDERSTANDING INPUTS AND USAGE OF PROBES
UNDERSTANDING INPUTS AND USAGE OF PROBES
15
15.2.4 Active differential voltage probes
Activedifferentialvoltageprobesarebattery-powered,differentialampliersinseries
withanyinputamplierinsingle-endedmode.
Fig. 15.10 Typical example of an active differential voltage probe
The achievable input range and accuracy depends on which active differential probe is
used.Activedifferentialprobescanbeusedinserieswithvirtuallyanyamplier,their
performance typically is limited. The fact that they are usually battery-powered may
cause some inconvenience, as battery maintenance is required.
Active differential voltage probes typically decrease the overall accuracy of the sys-
tem. The active output enables the use of the probe with (almost) any type of input.
Active differential voltage probes
Part number Capacitive
compensa-
tion range
Cable length Divider
factor
Bandwidth Maximum
input voltage
1-G909 n/a 0.9 m 20 ± 2% 25 MHz 140 V RMS
140 V DC
200 ± 2% 25 MHz 1.0 kV RMS
1.4 kV DC
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