HP 8447 Series Amplifier (9 kHz to 1300 MHz)
These amplifiers feature low noise and wide
bandwidths. They are ideal for improving spectrum
analyzer sensitivity and noise figure while providing
input isolation. Broad frequency coverage, flat
frequency response, and low distortion ensure
accurate measurements. See page 30 for
specification summary.
HP 11975A Amplifier (2 to 8 GHz)
Used in stimulus-response systems, this amplifier
allows a wide variety of sources to be leveled to
±1 dB and amplitude calibrated from +6 dBm to +16
dBm. As a preamplifier, its small signal gain varies
between 9 and 15 dB depending upon frequency.
HP 8449B Preamplifier (1 to 26.5 GHz)
This high-gain, low-noise preamplifier increases the
sensitivity of any RF/microwave spectrum analyzer
for detection and analysis of very low level signals.
The improved sensitivity can dramatically reduce
measurement time. See page 31 for specification
summary.
HP 11975A
HP 8449B
HP 8447D
129
15
Spectrum Analyzer Accessories
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Spectrum Analyzer Accessories
HP 11694A 75 ΩMatching Transformer
(3 to 500 MHz)
Allows measurements in 75 Ω systems while retaining
amplitude calibration with a 50 Ω spectrum analyzer
input. VSWR is less than 1.2; insertion loss is less
than 0.75 dB. See Option 001 and 002 for 75 Ω
versions of the HP 8590 series spectrum analyzer.
Connectors are type BNC (m) 50Ω to BNC (f) 75Ω.
HP 8721A Directional Bridge
(100 kHz to 100 MHz)
Used in return-loss measurements made with a swept
source such as a tracking generator and spectrum
analyzer. This 50 Ωbridge (75 Ω option) has a 6 dB
insertion loss and 6 dB coupled to the auxiliary arm.
The frequency response is ±0.5 dB (0.1 to 110 MHz);
directivity is >40 dB (1 to 110 MHz) and load-port
return loss is >30 dB; maximum input power is + 20 dBm.
See HP 86205/207A RF bridges for reflection
measurements above 110 MHz.
HP 85024A High Frequency Probe
Makes in-circuit measurements easy. Input
capacitance of only 0.7 pF shunted by 1 MΩ
resistance permits high frequency probing without
adverse loading of the circuit under test. Excellent
frequency response and unity gain guarantee highly
accurate swept measurements. High sensitivity and
low distortion levels allow measurements that take
full advantage of the analyzer’s dynamic range.
Directly compatible with many HP RF spectrum and
network analyzers.
HP 41800A Active Probe
This probe offers high input impedance from 5 Hz to
500 MHz. It works with many HP spectrum analyzers
to evaluate the quality of circuits by measuring
spurious level, harmonics, and noise. Low input
capacitance offers probing with negligible circuit
loading for precise, in-circuit measurements of audio,
video, HF, and VHF bands.
HP 11742A Blocking Capacitor
The HP 11742A blocking capacitor blocks dc signals
below 45 MHz and passes signals up to 26.5 GHz. Ideal
for use with high frequency oscilloscopes or in biased
microwave circuits, the HP 11742A will suppress low
frequency signals that can damage expensive
measuring equipment or affect the accuracy of your
RF and microwave measurements.
HP 8721A
HP 11694A
Ordering Information
HP 8447A: 0.1 to 400 MHz amplifier
HP 8447D: 0.1 to 1300 MHz amplifier
HP 8447F: 9 kHz to 1300 MHz amplifier
HP 11975A: 2 to 8 GHz amplifier
HP 8449B: 1 to 26.5 GHz preamplifier
Hp 87405A: Preamplifier
HP 11867A: dc to 1.8 GHz RF limiter
HP 11693A: 0.1 to 12.4 GHz microwave limiter
HP 11694A: 75 Ω matching transformer
HP 11852B: 75Ω minimum-loss pad
Option 004: 50Ω Type-N (m), 75ΩType-N (f)
HP 8721A: Directional bridge
Option 008: 75 Ω impedance
HP 85024A: High-frequency probe
HP 41800A: 5 Hz to 500 MHz active probe
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Spectrum Analyzer Accessories
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