Technical data
48 Chapter 2 
Options and Accessories
Accessories
Options and Accessories
50 Ohm/75 Ohm Minimum Loss Pad 
The Agilent 11852B is a low VSWR minimum loss pad that allows you 
to make measurements on 75 Ohm devices using an analyzer with a 
50 Ohm input. It is effective over a frequency range of dc to 2 GHz. 
75 Ohm Matching Transformer 
The Agilent 11694A allows you to make measurements in 75 Ohm 
systems using an analyzer with a 50 Ohm input. It is effective over a 
frequency range of 3 to 500 MHz. 
AC Probe 
The Agilent 85024A high frequency probe performs in-circuit 
measurements without adversely loading the circuit under test. The 
probe has an input capacitance of 0.7 pF shunted by 1 MOhm of 
resistance and operates over a frequency range of 300 kHz to 3 GHz. 
High probe sensitivity and low distortion levels allow measurements to 
be made while taking advantage of the full dynamic range of the 
spectrum analyzer.
AC Probe (Low Frequency)
The Agilent 41800A low frequency probe has a low input capacitance 
and a frequency range of 5 Hz to 500 MHz.
Broadband Preamplifiers and Power Amplifiers 
Preamplifiers and power amplifiers can be used with your spectrum 
analyzer to enhance measurements of very low-level signals. 
• The Agilent 8447D preamplifier provides a minimum of 25 dB gain 
from 100 kHz to 1.3 GHz. 
• The Agilent 87405A preamplifier provides a minimum of 22 dB gain 
from 10 MHz to 3 GHz. (Power is supplied by the probe power output 
of the analyzer.)
• The Agilent 83006A preamplifier provides a minimum of 26 dB gain 
from 10 MHz to 26.5 GHz.
• The Agilent 85905A CATV 75 ohm preamplifier provides a minimum 
of 18 dB gain from 45 MHz to 1 GHz. (Power is supplied by the probe 
power output of the analyzer.)
• The 11909A low noise preamplifier provides a minimum of 32 dB 
gain from 9 kHz to 1 GHz and a typical noise figure of 1.8 dB.










