A range of RF and Microwave Spectrum
Analyzers that offer value and
performance to both field and bench
users
Spectrum Analyzers
2390A series Spectrum Analyzers
• Fully synthesized Spectrum Analyzers to
26.5 GHz
• 3 Hz to 30 MHz resolution bandwidth
filters
• Excellent intermodulation performance
• +30 to -135 dBm measurement range
• Measurements to 300 GHz with external
mixers
• Optional built-in tracking generator
• Receiver mode with AM and FM
demodulators
• Optional quasi-peak detector and EMC
filters
The 2390A series of spectrum analyzers from IFR
combine exceptional performance with excellent
value for money. There are three instruments in
the range:-
2392A 9 kHz to 2.9 GHz
2390A 9 kHz to 22 GHz
2393A 9 kHz to 26.5 GHz
Frequency Accuracy
All three instruments are fully synthesized to give
accurate frequency measurements. Even on wide
spans the 2390A series gives precise frequency
measurements and an integral frequency counter
enables the measurement of individual signals to
1 Hz resolution.
Fundamental mixing to 12 GHz enables the microwave versions to reach their
maximum frequency in only two harmonic sweeps. This gives excellent
sensitivity and accuracy right up to 26.5 GHz.
Narrow Resolution
The 2390A series all have resolution bandwidths down to 3 Hz. Narrow
resolution bandwidths provide the ability to resolve closely spaced signals or
sidebands.
FM Spectrum
The 3 Hz filter is also used for close in signal analysis, for example it can be
used to identify 50 or 60 Hz power line sidebands on oscillators. The average
displayed noise level when using a 3 Hz filter is less than -135 dBm at 2.9 GHz
and below -125 dBm at 26.5 GHz. This makes 2390A series suitable for
locating and identifying low level spurious and harmonic signals.
Wideband Filters for Spread Spectrum and Pulsed Signals
When analyzing signals with wide spectrum bandwidths such as digitally
modulated carriers or pulsed radar, the resolution bandwidth of the spectrum
analyzer can limit the measurement. The 2390A series have 10 MHz and
30 MHz bandwidth filters. These give the best available characterization of
wideband signals and have an impulse bandwidth >5 MHz. In zero span
mode a minimum sweep time of 200 ns/div makes displaying radar pulses
precise and straightforward.
advancing wireless test
200 ns sweep clearly shows ringing on demodulated radar pulse
AM and FM Receiver Modes
The 2390A series features built-in receivers for both AM and FM
signals. Modulation detection can be set to narrowband or
wideband mode.
For an FM transmission a modulation scale of 1 kHz to 5 MHz per
division allows direct measurement of the modulation component of
carrier signals up to ±20 MHz deviation. Frequency synthesizer
settling time can be measured using the DC coupled output from
the FM detector.
A high quality audio output through either a built-in speaker or
headphone connector allows audible detection of noise or
distortion. It can also be used to identify the source of interfering
transmissions.
Harmonic and Spurious Measurements
When monitoring the frequency spectrum or installing and
maintaining radio systems it is important to check the spurious and
harmonic signals. The 2390A series has fundamental mixing to
12 GHz and sweeps to 26.5 GHz in only two harmonic steps. This
means that good sensitivity is maintained across the whole
frequency band revealing interfering signals that may otherwise
have been lost in noise.
Third order intermodulation measurement of a 1 GHz amplifier
Internally generated intermodulation distorting products are
minimized by the high performance input mixer. This gives more
than 80 dBc intermodulation free dynamic range. As a result the
user can be confident that all displayed signals are true signals even
when measuring at busy transmitter sites.
Network Measurements
An optional built-in tracking generator is available covering from
100 kHz to 2.9 GHz. It is ideal for frequency response measurements on filters, amplifiers and couplers. A normalization function
sets a 0 dB reference level which can be used for absolute
measurements of insertion loss or gain.
If used with a bridge the return loss of devices such as antennas or
loads can also be measured.
The output level of the tracking generator is adjustable from 70 dBm to 0 dBm. It can be used as a low level input for amplifiers,
or in CW mode as a synthesized local oscillator.
Filters can be characterized using the optional tracking generator
Field Measurements
For measurements at remote sites in the field the 2390A series is
portable and rugged. Mobile and cellular radio base stations
demand 24 hour reliability. The 2392A is ideal for field
measurements of spurious, harmonics and intermodulation
products. Integral frequency counter and receiver modes mean that
interfering signals can be identified quickly and easily.
For microwave radio links the 2390A or 2393A offer frequency
coverage to 22 GHz and 26.5 GHz respectively. A wide 30 MHz
resolution bandwidth filter, and limit mask, facilitate testing of
modulated point-to-point or trunk radio links.
Monitoring signals at a cellular radio base station
EMC Measurements
2390A series can be used for pre-compliance testing of electronic
products to meet stringent EMC specifications. Before sending a
product to an expensive test house a pre-compliance test will
indicate if the product is likely to pass.
Option 08 provides quasi-peak detection and five extra resolution
bandwidth filters. These comply with the CISPR recommendations
for measurements of RF emissions.
In-built FFT and Oscilloscope
When analyzing communications systems it is often necessary to
test the audio and IF frequencies, as well as the RF signal. With its
built-in 20 kHz FFT analyzer and 5 MHz oscilloscope, audio
analysis and fault finding is possible. The FFT analyzer enables
harmonic distortion measurements on audio signals and the scope
provides a general fault finding and diagnostic tool.
Clear Operation
The 2390A series has a large 7 in TFT color display for clear viewing
of signals and instrument settings. All key elements such as sweep
speed, resolution bandwidth, input attenuation and IF gain are
automatically set, depending on the user’s span and reference level.
Two markers can be used to measure signals as well as provide
standard operations such as peak find, marker to center and delta
marker. This speeds up and simplifies measurements.
99 traces and 99 instrument settings can be stored into the nonvolatile memory of the 2390A series. In this way tests can be stored
in the instrument and results saved to memory for printout at a later
time. The 2390A series spectrum analyzer is also equipped with
both RS-232 and IEEE-488 (GPIB) interfaces.
Applications Software
Accessory AC 1047 provides an additional 10 measurement
applications to the 2390A series. The applications are:-
• Adjacent Channel Power
• Occupied Bandwidth
• Voltage Standing Wave Ratio
• Cable Fault
• Pulse Identification
• Noise Marker
• Carrier/Noise 1 Hz Normalized
• Carrier/Noise 1.23 MHz
• Normalized
• AMPS Cellular Channel Mode
• Increment
All applications are supplied on a single 3.5 in disk. They are
downloaded into non volatile memory in the 2390A series spectrum
analyzer.
EasySpan Software
The EasySpan software is a Windows based program for PCs. It
facilitates viewing 2390A series traces on the PC display without the
need for spreadsheets. Traces and set-ups may be recorded to disk
for future reference. An interactive window allows macros to be
written allowing automatic trace acquisition. The instrument may
be connected to a modem allowing traces to be viewed and recorded
from a remote location, for remote site monitoring.
Active Probe
The AC2388 Active Probe covers from 50 kHz to 1.25 GHz. It
enables accurate measurements of devices from HF to UHF
without loading the circuit. A built-in continuously variable
attenuator minimizes probe distortion during measurement.
Specification
Frequency
FREQUENCY RANGE
2392A 9 kHz to 2.9 GHz
2390A 9 kHz to 22 GHz
2393A 9 kHz to 26.5 GHz
Internal Mixing (version dependent)
Band 0 0 Hz to 2.9 GHz
Band 1 2.6 GHz to 12.0 GHz
Band 2 11.5 GHz to 26.5 GHz
EXTERNAL MIXING (ALL INSTRUMENTS)
3 GHz to 300 GHz
FREQUENCY READOUT ACCURACY
±(3% of Span Width + Frequency Standard Accuracy + 50 % of
RBW)
FREQUENCY SPAN RANGE
2392A 10 Hz/div to 290 MHz/div
2390A 10 Hz/div to 2.2 GHz/div
2393A 10 Hz/div to 2.65 GHz/div
All versions have continuously variable span and zero span (0 Hz)
Accuracy
±5% of indicated span
FREQUENCY COUNTER
Resolution
1 Hz, 10 Hz, 100 Hz, 1 kHz
Accuracy
±(Frequency Standard Accuracy + Counter Resolution)
Sensitivity
(at 120 MHz with 0 dB attenuation)
<-85 dBm with 3 kHz RBW
<-65 dBm with 5 MHz RBW
FREQUENCY STANDARD
Temperature Stability (0 - 50°C)
±0.2 ppm
±0.02 ppm (Option 09)
Ageing
First year
±2 ppm/year
±1 ppm/year (Option 09)
Thereafter
±1 ppm/year
±0.5 ppm/year (Option 09)
RESIDUAL FM
(peak to peak in 20 ms, spans <1 MHz/div,
100 Hz video filter)
<10 Hz, below 6 GHz
<20 Hz, 6 GHz to 12 GHz
<40 Hz, 12 GHz to 26.5 GHz
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