Agilent 85024A
High Frequency Probe
300 kHz to 3 GHz
Product Overview
Excellent probing capability for demanding applications
2
Extend high frequency probing applications
The Agilent Technologies 85024A high frequency
probe offers excellent performance. The probe
employs a GaAs IC to obtain extremely low input
capacitance of only 0.7 pF shunted by 1 MΩ of
resistance. Because of this low input capacitance,
high frequency probing is possible without adversely
loading the circuit under test. Also, the 1 MΩ shunt
resistance guarantees minimal circuit loading at
lower frequencies. Since the probe has excellent
sensitivity, it is well-suited for use with analyzers
offering exceptional dynamic range. The 85024A is
an excellent accessory for high frequency test
equipment, especially Agilent RF network or spectrum analyzers which supply probe power from
the front panel.
Probe with less error due to higher input impedance. For example,
in a 50 ohm system at 500 MHz, the 85024A presents 455 ohms
which produces a 10% signal loss from loading effects, while a
3 pF, 100 kΩ probe presents 106 ohms causing a 32% signal loss.
Spectrum analysis
Troubleshooting RF and IF signal paths to identify
problem areas in a system is convenient and accurate with an 85024A and a spectrum analyzer.
Measurements of frequency, power, modulation,
distortion, conversion loss, and spectral purity are
possible within a circuit. High sensitivity and low
distortion levels ensure the probe’s ability to detect
small signals or search for spurious responses. In
fact, the sensitivity of most 85024A applications is
limited only by the noise floor of the spectrum
analyzer itself. Add a tracking generator to easily
perform swept in-circuit measurements.
Troubleshoot IF paths for low level spurious responses.
Network analysis
When used with a network analyzer, this versatile
probe makes it easy to measure the gain, attenuation, phase linearity, or group delay of individual
circuit stages. Also, investigate multi-stage circuits
to rapidly determine the location of faults in a system. Low input capacitance and high shunt resistance minimizes the loading to the circuit under
test. Excellent frequency response and unity gain
of the Agilent 85024A guarantee high accuracy in
swept measurements.
Excellent flatness maintains accuracy in swept
measurements.
3
Advanced design
Simplicity and reliability are inherent in the design
of the 85024A. The front end was designed using a
custom GaAs IC to provide low input capacitance.
A retractable metal sleeve protects the probe from
physical damage to the tip when not in use and,
more importantly, from electrostatic discharge (ESD)
damage to the probe. By retracting the metal sleeve,
the user establishes himself at the same potential
as the high frequency probe. Thus, it may be handled with less possibility of electrostatic damage.
Finally, the entire probe front end is easily disassembled for quick replacement in the field.
A replaceable state-of-the-art GaAs IC provides high
performance and extends the lifetime of the 85024A.
Compatible with many Agilent instruments
Direct compatibility with many RF analyzers further leverages the performance and flexibility of
the 85024A high frequency probe. Spectrum analyzers which supply probe power from the front
panel include the Agilent 8560, 8590, and 71100
series. RF network analyzers like the 8751, 8752,
8753, and 4395 are also directly compatible. In
addition, utilize the high frequency probe with
other instruments by making use of an external
probe power supply like the Agilent 11899A.
Specifications
(Terminated with 11880-60001 Type-N Adapter)
Specifications describe the warranted performance over the temperature range of
25˚ C ±5˚ C (except where noted). Supplemental characteristics are intended to
provide information useful in applying the instrument by giving unwarranted performance parameters. These are denoted as “typical,” “nominal,” or “approximate.”
Input capacitance (at 500 MHz) < 0.7pF (nominal)
Input resistance 1 MΩ (nominal)
Bandwidth 300 kHz to 3 GHz (nominal)
Usable to 100 kHz
Average gain 0 dB ± 1.25 dB
Average gain is defined as the average of the maximum and minimum
gains over the frequency range of 300 kHz to 1 GHz (maximum gain
+ minimum gain)/2.
Frequency response (relative to Average Gain):
300 kHz to 1 GHz ±1.25 dB
1 GHz to 3 GHz ±2.5 dB
Average noise level < 1 mV, 10 Hz to 10 MHz
Input voltage for <1 dB compression 0.3 V
Supplemental characteristics
Noise figure
Below 100 MHz < 50 dB
100 MHz to 3 GHz < 25 dB
Pulse transition time 200 psec
Distortion (at 0.3 V) < –30 dBc
Maximum safe input
Probe alone ±1.5 V peak RF, ±50 V DC
Probe with 10:1 divider ±15 V peak RF, ±200 V DC
10:1 divider characteristics
Input capacitance < 0.7 pF
Input resistance 1 MΩ
Input voltage for 1 dB compression 3 V
Power
Supplied by certain Agilent instruments or
Agilent 11899A probe power supply +15 V/130 mA,
–12.6 V/45 mA
Weight Net 0.255 kg (0.563 lb),
Shipping 1.49 kg (3.3 lb)
Dimensions Probe assembly length
1245 mm (49 in)
27.5 mm (7.0 in.)
TOP
30.5 mm (7.75 in.)
4.9 mm (1.25 in.)
SIDE
3.9 mm (1.0 in.)
Other Accessories
11899A Probe Power Supply
10218A Probe to BNC Male Adapter
(recommended for use with the 8590 series)
Accessories furnished with the 85024A
11880-60001 Type-N Male Adapter
11881-60001 10:1 Divider
01123-61302 2.5-inch Ground Lead
5060-0549 Spanner Tip Assembly
8710-1806 Probe Tip Nut Driver
10229A Hook Tip
30 mil Spare Probe Tips
12 mil Spare Probe Tips
Agilent Technologies’ Test and Measurement
Support, Services, and Assistance
Agilent Technologies aims to maximize the value you receive,
while minimizing your risk and problems. We strive to ensure
that you get the test and measurement capabilities you paid
for and obtain the support you need. Our extensive support
resources and services can help you choose the right Agilent
products for your applications and apply them successfully.
Every instrument and system we sell has a global warranty.
Support is available for at least five years beyond the production life of the product. Two concepts underlie Agilent’s
overall support policy: “Our Promise” and “Your Advantage.”
Our Promise
“Our Promise” means your Agilent test and measurement equipment will meet its advertised performance and functionality.
When you are choosing new equipment, we will help you with
product information, including realistic performance specifications and practical recommendations from experienced test
engineers. When you use Agilent equipment, we can verify that
it works properly, help with product operation, and provide
basic measurement assistance for the use of specified capabilities, at no extra cost upon request. Many self-help tools are
available.
Your Advantage
“Your Advantage” means that Agilent offers a wide range of
additional expert test and measurement services, which you
can purchase according to your unique technical and business
needs. Solve problems efficiently and gain a competitive edge
by contracting with us for calibration, extra-cost upgrades, outof-warranty repairs, and on-site education and training, as well
as design, system integration, project management, and other
professional services. Experienced Agilent engineers and technicians worldwide can help you maximize your productivity,
optimize the return on investment of your Agilent instruments
and systems, and obtain dependable measurement accuracy
for the life of those products.
Get assistance with all your test and measurement needs at:
www.agilent.com/find/assist
Product specifications and descriptions in this
document subject to change without notice.
Copyright © 1998, 2000 Agilent Technologies
Printed in U.S.A. 7/00
5968-2101E
Loading...