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the stored register. Make sure that user flatness correction is still
enabled before making the measurement.
When an HP
437B
power meter is used to automatically enter the
correction data, the correction calibration routine automatically turns
off any active modulation, then re-activates the modulation upon
the completion of the data entry process. Therefore, the scalar pulse
modulation that is automatically enabled in a scalar measurement
system is disabled during an HP
437B
correction calibration.
Note
The user flatness correction array cannot be stored to a disk. You
must make sure that the array is stored in one of the eight internal
registers. Recalling a file from an HP 8757 disk will not erase the
current array; therefore you may recall an array from an internal
register, then recall an associated file from a disk.
For this example, refer to menu map 5, POWER.
1. The equipment setup shown in Figure 1-21 assumes that
you have followed the steps necessary to correctly level the
configuration. If you have questions about external leveling
refer to earlier paragraphs titled, “Externally Leveling the
Synthesizer
.”
2. On the analyzer, press [PRESET). Reset the analyzer and
synthesizer to a known state.
Setup System Parameters
3. On the synthesizer, press FREQUENCY
(START)
@
(GHz,
(STOP)@@m.S
et t e
s
n
h yth
esizer for a frequency sweep of
2 to 20 GHz.
4. Press [POWER
LEVEL)
0
@.
Where n = maximum available
power.
5. On the analyzer, set up the appropriate measurement
(i.e. gain for an amplifier). Calibrate the measurement (thru and
short/open calibration). Press
ISAVE)
(iJ
to store the analyzer’s
configuration and synthesizer parameters in storage register 1.
6. Turn off the HP 8757 System Interface. Use the analyzer
SYSINTF
ON OFF
softkey
found under the SYSTEM menu to
deactivate the system interface.
Access User Flatness Correction Menu
7. On the synthesizer, press POWER
Cm).
Select
Fltnesa
Menu.
8.
Select Delete Menu Delete All . This step insures that the
flatness array is empty.
1-44 Getting Started Advanced