C1
1kV AC-Probe (1-G042-2)
Coax cable
+
-
1 MΩ
Schematic input
diagram GN813/814
Figure K.4:
1kV DC probe 1
-
G042
-
2
The probes have no calibration points. As the probe is fixed AC coupled, no DC
inaccuracy is specified. The AC high pass bandwidth inaccuracy is designed to
meet its specification based on the input impedance of the basic extended
isolated amplifiers. Calibration of the 1kV AC probes only checks whether
tolerances are still met. When deviations occur, the probes must be repaired,
as no adjustments can be carried out.
CAUTION
Cable length of the 1kV AC probes is not critical for correct operation.
However, it is advised not to change the length to prevent possible side
effects, such as ringing of step responses due to large impedance
mismatches.
Specifications
Number of channels
1 per probe, 16 per probe rack
Input type
Isolated unbalanced differential (isolated single
-
ended)
Input connectors
2; 4 mm safety banana plugs (red and black)
Input impedance
1 MΩ
±
1% for AC signal > 1 Hz; when using a
1 MΩ output load
Divider ratio
1:1 for AC signal > 20 Hz
Inaccuracy
AC signal > 100 Hz; As specified by GN813 and
GN814 cards
Maximum input voltage
Positive input (red) 1000 V DC
Negative input (black) 250 V DC; As specified by GN813 and GN814
cards.
AC coupling bandwidth
0.8 Hz
±
20% (
-
3 dB)
Bandwidth
As specified by GN813 and GN814 cards
Coax cable length
Fixed; Several variances as delivered
GEN3i
I3763-3.1 en HBM: public
995
