LeCroy AP034, Instruction Manual

Page: 44 / 76

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ISSUED: January 2000 AP034-OM-E Rev D
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Termination connector. Make sure that the probe is fully
engaged in the fixture.
3. Set the oscilloscope to display channel 1. In the oscilloscope
Channel 1 “COUPLING” menu, set Coupling to DC 1 M
Ω
,
and Global BWL to Off. Autobalance the AP034 by pressing
the
AUTOBALANCE menu button twice. Set the
oscilloscope trigger mode to AUTO.
4. If necessary, center the trace with the Probe Offset (channel
O
FFSET
knob).
5. Connect a BNC cable from the output of the high frequency
sine wave generator to the Channel 2 input of the
oscilloscope.
6. Set the oscilloscope as follows:
Display Channel 2 only
Channel 2 VOLTS/DIV 0.5 V/div
Channel 2 Coupling DC 50
Ω
Trigger on 2
Trigger coupling 2 HF
TIME/DIV 5 ns/div
Acquisition Mode NORMAL
7. Set the high-frequency sine wave generator frequency to
100 MHz, and the amplitude to approximately 2 V
p-p
. Set the
RF Output to ON.
8. Adjust the oscilloscope trigger level as needed for a stable
display.
9. Adjust the output amplitude of the high frequency sine wave
generator for a display of exactly 4 divisions (2 V) peak-to-
peak. Turn off the RF Output.
10. Move the high frequency sine wave generator output cable
from the oscilloscope channel 2 input to the Common Mode
Drive 50 ohm Termination connector of the AP033/AP034
Calibration Fixture.
11. Set the high-frequency sine wave generator RF Output to
ON.