Teledyne LeCroy AP015 - Manual (Page 11)

Operator’s Manual
922254-00 Rev A 7
Performance Verification Procedure
The warranted characteristics of the AP015 Current Probe are valid at any
temperature within the Environmental Characteristics listed in the
Specifications. However, some of the other test equipment used to verify the
performance may have environmental limitations required to meet the accuracy
needed for the procedure. Make sure that the ambient conditions meet the
requirements of all the test instruments used in this procedure.
NOTE: The correct operation of the controls of the AP015 requires oscilloscope
software version 7.6.0 or higher for LT series scopes. The use of earlier versions
is not recommended. The software version in the LT series test oscilloscope can
be verified by pushing SHOW STATUS, then selecting the System menu option.
Contact your local Teledyne LeCroy representative if the software in your
oscilloscope requires updating.
A. Check Bandwidth
1. Set the Leveled Sine Wave Generator frequency to 50 kHz, the output
level to approximately 5 Vp-p (+18 dBm), and turn RF ON.
2. Connect the output to the BNC connection of the high-speed shunt
calibration fixture, AP015-CF02, using the matched BNC coaxial cable
specified for use with the leveled sine wave generator.
3. Open the slider and connect the AP015 to the high-speed shunt
calibration fixture. Close and lock the probe slider by pushing it fully
away from the probe cable.
4. Push the AUTO SETUP button on the oscilloscope. Press MEASURE
TOOLS, set the mode to Std Voltage, on trace 1, from 0.00 div to 10.00
div.
5. Adjust the generator level until the current is 100 mA peak-to-peak, as
measured using the peak-to-peak function on the oscilloscope.
6. Set the sine wave generator frequency to 25 MHz. Be careful not to alter
the signal amplitude.
7. Slowly increase the output frequency until the displayed amplitude of
the current sine wave decreases to 71 mA peak-to-peak (a 3 dB
reduction in amplitude).