Added Benefits of Preselected Millimeter Measurements
Reduced overload from many signals
Preselected millimeter mixers reduce
susceptibility to overloading by
numerous signals. Overloading can
cause your measurements to be
uncalibrated.
System amplitude accuracy
Millimeter preselection improves
system amplitude accuracy by
reducing the level of local oscillator
(LO) emissions back to the device
under test. Option 001 further
improves system amplitude accuracy
by adding an isolator in front of the
input filter. With Option 001, the RF
input VSWR is <1.6:1 in A, Q, and U
bands and <2.3:1 in V Band.
System configuration
To operate your 11974 Series
preselected millimeter mixer, simply
connect the tune+span output, local
oscillator output,
1
and the IF input of
the spectrum analyzer to the mixer.
Select the appropriate analyzer using
the switch on the rear panel of the
mixer. Make two easy adjustments,
and you’re ready to make millimeter
measurements.
The 11974 Series connect to a
standalone power supply with a
convenient 6-foot cable. Use the
same power supply with any 11974
Series preselected mixer.
A full set of upgrade kits is available
to ensure compatibility with your
existing spectrum analyzers including
Agilent 8560A, 8561A/B, 8562A/B,
8566A/B, and E4440A/46A/48A PSA
Series. Refer to the compatibility table
to determine whether your spectrum
analyzer requires an upgrade.
All versions of 8563A spectrum
analyzers and 70907B external mixer
interface modules are fully compatible
with the 11974 Series.
Greater dynamic range
Preselection improves dynamic range
when signals are sufficiently spaced.
The preselector allows only one of
these signals to reach the mixer at a
time. So internally produced distortion
products, such as third order
intermodulation, are reduced.
Ease of use
Operators no longer need to learn
techniques of signal identification.
Anyone familiar with preselected
microwave spectrum analyzers can
quickly and easily make millimeter
measurements. Spurs from a device
under test are easily found. They
are not hidden by images or multiple
responses.
11974A
11474Q
11974U
11974V
26.5 GHz
33 GHz
40 GHz
50 GHz
60 GHz
75 GHz
1. Operation with 8566B spectrum analyzers requires the use of an 11975A LO amplifier to provide sufficient local oscillator power to the 11974 Series LO input.
2
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