Signal Analyzers
260 Wide-Bandwidth Receiver
HP 71910A
HP 71910P
HP 71910A and 71910A Option 11 configurations
HP 71910A and HP 71910P Receiver
Modular Receiver for Surveillance and Signal
Monitoring
The HP 71910A/P is a receiver in the MMS format for monitoring signals from 100 Hz to 26.5 GHz. The receiver provides cost-effective combination search and wide-bandwidth collection capabilities for surveillance and signal monitoring of satellite, digital radio and radar/EW transmissions.
The wide-bandwidth receiver consists of the HP 71209A/P Option
001 spectrum analyzer plus the HP 70911A ultra-wide bandwidth IF
5
module. System options include a preamplifier module for enhanced
noise figure and smaller-size, single-mainframe configurations.
Search and Collection Modes of Operation
The HP 71910A/P receiver has two modes of operation: search and collection. To search for signals, the receiver relies on its fast spectrum
analyzer tuning. It sweeps over user-specified spans up to 26.5 GHz
wide using bandwidths up to 3 MHz. Wide dynamic range ensures that
signals of various amplitudes can be quickly identified.
Once a signal is located, the receiver is fixed-tuned and the wide IF
bandwidths in the HP 70911A IF module are used for signal collection.
The HP 70911A provides IF bandwidths up to 100 MHz (in 10% increments) and up to 70 dB IF step gain. A linear IF signal path provides
good signal fidelity with standard outputs of 321.4 MHz IF and linear
video. Optional outputs include 70 and 140 MHz IF, analog I/Q and
demodulated FM.
24.35
HP 71910P
When more thorough analysis is required, the I and Q outputs can
be connected to a dual-channel vector signal analyzer (VSA). This configuration can provide full-signal demodulation of microwave signals
with double the bandwidth normally provided by the VSA alone.
Digital Demodulation and Vector Signal Analysis
Add high performance digital demodulation and vector signal analysis
capability by combining the HP 71910A/P and HP 89410A VSA. Measurements such as error vector magnitude (EVM) along with constellation, eye diagram and time domain analysis as well as group delay, AM
to PM and phase versus drive, for example, can be made on microwave
communication signals.
System Specification Summary
Frequency Range: 100 Hz to 26.5 GHz (110 GHz with external mixers)
Noise Figure at 12 GHz: 32 dB (13 dB with preamplifier module)
TOI at 12 GHz: +2.0 dBm (without preamplifier module)
Tuning Resolution: 1 Hz
LO Phase Noise at 6 GHz: –108 dBc/Hz at 10 kHz offset
IF Bandwidths: 10 Hz to 100 MHz (continuously variable in 10%
increments in most cases)
Spectrum Analyzer RBW: 10 Hz to 3 MHz
Receiver IF Bandwidth: 10 MHz to 100 MHz
IF Filter Type: 5-pole, synchronously tuned
Optional Filter Type: 6-pole, Chebyshev channel filters
IF Step Gain: 70 dB (in 1 dB steps)
Outputs
321.4 MHz IF
Bandwidth: 10 MHz to 100 MHz (preselector bypass)
Bandwidth: > 36 MHz for 2.7 to 26.5 GHz RF path (preselector ON)
Bandwidth: > 48 MHz for 100 Hz to 2.9 GHz RF path
Video: AM, FM (optional), pulse (bandwidth same as 321.4 MHz IF)
Optional 70 MHz IF (bandwidth ≥40 MHz)
Optional 140 MHz IF (bandwidth ≥70 MHz)
Optional Analog I/Q (I bandwidth ≥50 MHz; Q bandwidth ≥50 MHz)
HP 71910A and HP 89410 VSA
Pulse Shape Characterization
Traditional shape measurements of pulsed microwave signals using a
spectrum analyzer are significantly enhanced by the 100 MHz bandwidth. Using an oscilloscope connected to the video output, pulse rise
and fall times of microwave signals are easily measured to 7 ns.
I/Q Signal Identification
The optional analog I/Q demodulator provides I and Q outputs which
will produce a constellation display on an oscilloscope when the
HP 71910A/P is tuned to a suitable digitally modulated signal. Sub-Hz
tuning (minimum of 1 Hz resolution on-screen) allows ultrafine adjustments to compensate for phase offsets when it is not possible to phaselockthe receiver to the source, such as in off-the-air monitoring. By
stopping the spinning caused by a non-phaselocked system, modulation
formats are easily identified.
Key Literature
MMS Catalog, p/n 5965-2818E
HP 71910A/P Wide Bandwidth Receiver, p/n 5965-7916E
HP 89410A Vector Signal Analyzer, p/n 5964-3586E
Ordering Information
HP 71910A Wide Bandwidth Receiver
HP 71910P Wide Bandwidth Receiver
Opt 001 70 MHz IF Output
Opt 002 140 MHz IF Output
Opt 004 Analog I/Q Output
Opt 005 FM Output
Opt 007 Channel Filters
Opt 011 Delete Display, NB IFs, PFR (71910A only)
Opt 016 HP 7060B Option 001 Preamplifier Module
HP 70911A Ultra-Wide Bandwidth IF Module
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