9500B
Calibration Manual
108
Calibration Setup
1.
Connections:
Ensure that the 9500B is connected to the Standards DMM as
shown in Figure 15, or via a similar BNC-4 mm adaptor, and that
both instruments are powered on and warmed up.
2.
9500B:
Ensure that the 9500B is in BASE CAL mode and then select the
DC/Square; Square Waveform (Positive) function (From entry
default, in the Target Selection screen, press the WAVEFORM
soft key and then press the
2
soft key on the right of the screen).
Select the required output Signal Channel (1 M
Ω
Load), trigger
channel and Trigger Ratio (if required) via the Target Selection
screen.
Calibration Procedure
1.
Starting at Cal Range 1, calibrate at all calibration points listed in Table 21 by
performing operations (2) to (13) below.
2.
Select the required 9500B hardware configuration by choosing the appropriate
Cal Range.
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 or TARGET 2 screen key to display the target's Adjustment
screen.
Note
Omit operation 5 if you do not wish to change the amplitude of this target
calibration point. The frequency is fixed and cannot be changed.
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 21).
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 21).
c.
Press the SAVE TARGET soft key.
6.
If using the Model 4955 Calibration Adaptor, set its switch to 'SQV o/c'. If not
using the Model 4955, ensure that the DMM input is AC coupled at high
impedance.
