Agilent Technologies ESA-E E4401B, Справочник пользователя/программиста

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Chapter 2 105
Front-Panel Key Reference
Input/Output
Fr
ont-P
ane
l K
e
y
Ref
e
re
nce
Trace 2 having the same horizontal
position are considered to be in the
current band and therefore can be
analyzed with the amplitude and
frequency measurement systems of the
analyzer. All other responses are
invalid and should be ignored.
Key Access:
Input/Output
,
Input Mixer
,
Signal ID Mode
Mixer Config
Accesses the Mixer Config menu keys allowing you to
manually set the harmonic, control the preselected
mixers, and adjust the internal bias source for use with
mixers requiring bias.
Key Access:
Input/Output
,
Input Mixer
Harmonic
Auto Man
The harmonic value with its associated
sign is automatically determined from
the Ext Mix Band selected when in
Harmonic (Auto)
mode.
Harmonic (Man)
allows you to enter a harmonic value
when required. If the harmonic mode
for the external mixer is listed as “8 –”,
for example, enter the harmonic
number as “– 8”. The minus sign
indicates that the tuned frequency is
below the desired LO harmonic by the
IF of 321.4 MHz. Similarly, if the
harmonic mode of the external mixer is
listed as “8 +”, enter the harmonic
number as “8”.
Key Access:
Input/Output
,
Input Mixer
,
Mixer Config
Mixer Type
Presel Unpre
Allows you to select which type of mixer
is in use.
Mixer Type (Presel)
activates a
tuning signal that is routed to the
PRESEL TUNE OUTPUT
connector on the
rear panel of the analyzer. This signal
has a sensitivity of 1.5V/GHz of the LO
frequency and drives the tune input of
the HP/Agilent 11974 series of
preselected mixers. The sweep rate in
Presel
mode is limited to 40 MHz/msec.
Key Access:
Input/Output
,
Input Mixer
,
Mixer Config