3. For this Cal Range, use (a) or (b):
a. If you wish to use the 'saved' target calibration points used during the
previous calibration of the 9500B, do not press the DEFAULT TARGETS
screen key.
b. If you wish to use the default target calibration points defined for this
hardware configuration, press the DEFAULT TARGETS screen key.
4. Press the TARGET 1, TARGET 2, TARGET 3 or TARGET 4 screen key to
display the target's Adjustment screen.
Omit operation 5 if you do not wish to change the frequency or amplitude of
this target calibration point.
5.
a. If you wish to change the target calibration point frequency, use the TAB Δ
key to position the cursor on the Frequency value. Now use any editing mode
to change this value (note that the new value must lie within the Max and Min
limits specified in Table 24).
b. If you wish to change the target calibration point amplitude, use the TAB Δ
key to position the cursor on the Target Amplitude value. Now use any editing
mode to change this value (note that the new value must lie within the Max
and Min limits specified in Table 24).
c. Press the SAVE TARGET soft key.
6. If using the Model 4955 Calibration Adaptor, set its switch to 'SQV 50 Ω'. If not
using the Model 4955, ensure that the DMM input is AC-coupled using an
external 50 Ω load impedance.
7. Set the Standards DMM to the appropriate RMS voltage measurement range.
8. Calculate the RMS value of the 9500B output pk-pk voltage from the following
factor:
(RMS = 0.5 x 0.70710 x pk-pk)
The above figure applies only when the Standards DMM input is
AC-Coupled.
9. Press the ON key to turn the 9500B output on.
10. Press the TAB Δ key to return the cursor to the 9500B O/P Amplitude display, and
increment or decrement this value using the cursor controls and/or spinwheel until
the reading on the Standards DMM is the RMS equivalent of the displayed Target
Amplitude pk-pk value calculated in operation (8).
High Performance Oscilloscope Calibrator
Front Panel Base Calibration by Functions
Note
Note
113
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