Chapter 5 85
Options and Accessories
Accessories
HP/Agilent 11974 Series Preselected Millimeter Mixers
11974 Series preselected millimeter mixers are available to extend the frequency range of analyzers with
Option AYZ (external mixing) up to 75 GHz. Preselection reduces mixer overload from broadband
signals, reduces radiation of local oscillator harmonics back to the device under test, and reduces the
level of image and multiple responses displayed. The following four models are available:
Agilent E1779B Battery Pack
The E1779B is a battery pack that will power an Agilent analyzer for 80 to 114 minutes, depending on
the options installed in the analyzer. Refer to the E1779B Battery Pack User’s Guide for more
information.
NOTE Agilent recommends a two person lift when using this instrument with the model 1779B
battery pack attached.
Parallel Interface Cable
For use with Option 1AX. A 36-pin to 25-pin male-to-male 2 meter cable can be used to connect
supported printers to an analyzer. This cable must be IEEE-1284 compliant.
Printer
For use with Option A4H or 1AX. The HP DeskJet personal printers provide black and white or color
printing for another form of permanent records of your test results. The HP LaserJet series printers are
also compatible. The printers connect to the parallel interface installed on the analyzer with either Option
A4H (standard) or 1AX.
RF and Transient Limiters
The Agilent 11867A and 11693A RF Limiters protect the analyzer input circuits from damage due to
high power levels. The 11867A operates over a frequency range of dc to 1800 MHz and begins reflecting
signal levels over 1 mW up to 10 W average power and 100 watts peak power. The 11693A microwave
limiter (0.1 to 12.4 GHz, usable to 18 GHz) guards against input signals over 1 milliwatt up to 1 watt
average power and 10 watts peak power.
The Agilent 11947A Transient Limiter protects the analyzer input circuits from damage due to signal
transients. It specifically is needed for use with a line impedance stabilization network (LISN). It
Table 5-2.
HP/Agilent Model
Number
Frequency Range
11974A 26.5 to 40.0 GHz
11974Q 33.0 to 50.0 GHz
11974U 40.0 to 60.0 GHz
11974V 50.0 to 75.0 GHz
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