7.5
Probe calibration
The GEN3i mainframe is provided with a probe calibration output. This output
can be used to calibrate probes used in combination with the Genesis High
-
speed measurement system.
The probe calibration output drives a calibration signal with the following
characteristics:
l
~1 kHz square wave
l
0 V to 2 V amplitude when using a 1 MΩ load
l
0 V to 1 V amplitude when using a 50 Ω load
In order to calibrate a probe, connect the probe output to an acquisition card
and set up the acquisition channel in accordance with the probe calibration
signals as described above.
Connect the probe ground wire to the probe calibration ground output pin and
the probe input to the probe calibration signal output pin. See Figure 7.12.
6
5
DC
DC
2M
Ω
CA
T II 600V
MA
INS
IN
PUT
100-240
V A
C
CA
L
PTP
C
AL
A
B
Figure 7.12:
Probe calibration
A
Probe GND
B
Probe input
GEN3i
106
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