K.3.3
Optional G041 1kV DC probe
The 1kV DC probe is a special front
-
end extension for the Basic
Extended Isolated amplifier cards
(1
-
GN813
-
2 and 1
-
GN814
-
2). It
increases the maximum input range by a factor of ten with a maximum input
voltage of +/
-
1000 V.
The HV probe offers an accuracy of 0.1% (accuracy is typically 0.05%) and can
be freely moved in front of any channel within these specification. Using the
probe with the Basic Extended Isolated amplifier card operating in wideband,
the bandwidth is designed to meet 250 kHz
±
10% (
-
3 dB)
To accommodate the probes, a 1kV DC probe rack mount housing is available.
This uses up a single height unit and holds up to sixteen 1kV DC probes. Each
probe comes with a fixed output connection cable with a double isolated coax
cable. This connects directly into the Genesis Isolated Basic amplifier.
CAUTION
As the probe rack specifies the maximum voltages per input pin, the
1kV DC and AC probes are not to be mixed in one probe rack.
Coax cable
+
-
1 MΩ
Schematic input
diagram GN813/814
C4
1kV DC-Probe (1-G041-2)
900 kΩ
111 kΩ
C1
C2
Figure K.1:
1kV DC probe 1
-
G041
-
2
The probes have no calibration points. The DC inaccuracy is designed to meet
its specifications based in the input resistance of the basic extended isolated
amplifiers. The AC bandwidth inaccuracy is designed to meet its specification
based on the variance of the capacitive load of the basic extended isolated
amplifiers. Calibration of the 1kV DC probes will only check whether tolerances
are still met. When deviations occur, the probes must be repaired, as no
adjustments can be carried out.
GEN3i
992
I3763-3.1 en HBM: public
