9500B
Calibration Manual
116
Calibration Setup
1.
Connections: Ensure that the 9500B is connected to the Standards DMM as
shown in Figure 17, or via a similar BNC-4 mm adaptor and
50
Ω
load, 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
Load Resistance Measurement function (From entry default, in
the Target Selection screen, press the Aux key on the right of the
Front Panel). Select the required output Signal Channel via the
Target Selection screen.
Calibration Procedure
1.
Starting at Target 1, calibrate at all calibration points listed in Table 22 by
performing operations (2) to (15) below.
2.
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, press the DEFAULT
TARGETS screen key.
c.
Saved/default targets should be considered as nominal values, with the actual
value being used during calibration, which is typically not saved at step 13.
3.
Select the required load resistance by choosing the appropriate TARGET 1,
TARGET 2, TARGET 3 or TARGET 4 screen key to display the target's
Adjustment screen.
Note
Omit operation (4) if you do not wish to change the resistance value of this
target calibration point.
4.
a.
If you wish to alter the target resistance, use any editing mode to change this
value (note that the new value must lie within the Max and Min limits
specified in Table 25).
b.
Press the SAVE TARGET soft key.
5.
If using the Model 4955 Calibration Adaptor:
a.
Ensure that the Active Head output BNC is disconnected from the Model
4955 input.
b.
Set the Model 4955 Calibration Adaptor switch as shown in Table 25.
