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use keys on the ENTRY block to enter the desired value as the
reference value.
Specifying Reference Frequency
1. Sequentially press
f(biue))
and
[Freq (Xti)l.
Use
or
to
display AF :nn .
2- Press AF :nn to display the following:
AF: Off DEV PPM
3. Select Off when you do not wish to display the difference (A)
between the measured and reference frequencies. Select DEV to
display the difference or PPM to display the measured frequency in
ppm.
4. Next, specify the reference frequency that is used to display the
A frequency. To do this, press Relf :n.nrmn Hz to display the
following:
RefZ: Nominal User
5. Select Nominal when you wish to use the measured frequency
(frequency specified with
(Freq)).
Select User when you wish to
specify a frequency other than the measured frequency as the
reference frequency.
6. When you select Nominal, the measured frequency is automatically
specified as the reference frequency for the A mode. When you
select User, use keys on the ENTRY block to enter the desired
frequency as the reference frequency.
Displaying A
1. Sequentially press
(fbiue)l
and
(p(AMode)l
to turn
ON
the A mode.
At this time, A appears on the left of measurement parameters to
indicate that the parameter represents the difference from the
nominal value. Note, however, that A does not appear if you have
selected OFF for that item.
2. Sequentially press
If blue))
and [p (AMode)l once again to turn OFF the
A mode.
Specifying Target Signal Level and Using ALC Function (HP E4916A Only)
With the HP E4916A, you can specify the target signal level. You can
choose the unit from among W, V, A, and dBm.
Signal level can be affected by the Cl of the component being
measured. Tb make sure that the signal of the specified level is
applied to the component, you need to specify the component Cl as
the nominal CL You can use the ALC function to automatically set the
signal at a proper level based on the measured CL
Specifying Signal Level
1. PreSS
(Level )■
Applications
5*9
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