Agilent 1156/7/8A Active Probes
for Infiniium Oscilloscopes
Product Overview
Features
• 4 GHz, 2.5 GHz, and 1.5 GHz bandwidth
models
• Small size makes probing easier
• 88 ps rise time (on 4 GHz model)
• 100 kΩ, 0.8 pF, non-resonant input
impedance
• ±15 V offset
• 5 V peak-to-peak dynamic range
• Accessories designed for minimal loading
on your device and optimum response
• Compatible with the Infiniium AutoProbe
Interface
As the speeds in your design
increase, you may notice more overshoot, ringing, and other perturbations when connecting an oscilloscope probe. Probes form a resonant
circuit where they connect to the
device. If this resonance is within the
bandwidth of the oscilloscope probe
you are using, it will be difficult to
determine if the measured perturbations are due to your circuit or the
probe.
Agilent is the only company that
has overcome the resonance formed
by the connection of a probe to a
device. The Agilent 1156/7/8A
probes optimize performance to
make your job easier:
•High input impedance of 100 kΩ
and 0.8 pF that never resonates
low
•Flat frequency response across the
entire bandwidth of the probe
•A full 5 V peak-to-peak dynamic
range, and
•±15 V of offset.
Combined with the Agilent 54846A
Infiniium scope, the 1158A 4 GHz
probe offers you a full 2.25 GHz
of system bandwidth, giving you
accurate insight into your high-speed
devices.
Agilent 1156/7/8A active probe with accessories
Agilent 1156/7/8A active probe with resistive signal pin and ground blade
2
Vin and Vout when driven from a 25Ω source
Response = Vout/Vin
Notice how closely the output matches the input The flat response means the waveform on the scope screen will match
the waveform at the probe tip - across the entire 4 GHz bandwidth.
Small Size
Have you experienced problems with
large, clunky probes? If so, you
probably found your probe awkward
to hold and had difficulty connecting
to your signals. With the 1156/7/8A’s
small size you can handle the probe
expertly and gain access to tight
spaces. Plus, the low mass makes the
probe more durable. Agilent makes
your job easier – giving you performance that is easy to use.
Faithful Reproduction of Your Signal
Now you can accurately measure
your high-speed signals without
introducing errors from a probe that
has a resonant input impedance or
non-flat frequency response.
Resistance is placed as close as possible to the point being probed, which
keeps the input impedance from resonating low, and it also allows a flat
frequency response across the entire
bandwidth of the probe. Finally, there
is a high bandwidth active probe
where the waveform on screen
matches the waveform at the probe
tip. No other probe currently on the
market offers a flat response for the
entire bandwidth of a 4 GHz probe!
With the wide dynamic range and
±15 V of offset, the probe can be used
in a wide variety of applications.
Superior Accessories
Your device under test (DUT) determines the type of probing accessories you
need. Of course, there are electrical trade-offs depending on the type of
connection you use. Longer connections from your DUT produce lower
performance probing systems.
Agilent offers a variety of accessories optimized to give you the most
accurate reproduction of your signal. In addition, the performance of each
accessory is characterized for you. Now you can make informed decisions
and get the best measurement for your environment. Superior performance
combined with the knowledge to use it - that's how Agilent helps you do
your job better.
This suite of accessories is properly damped to give you a flat transmitted
response and non-resonant input impedance. Use these supplied accessories
to get the best performance from your probe:
• Resistive signal pin (orange) E2640A
• Solderable-tip 5 cm resistive signal lead E2638A
• Socket-end 5 cm resistive signal lead 01156-82105
• Socket-end 10 cm resistive signal lead 01156-82108
• Ground blade assembly E2641A
• Solderable SMT ground pin 1253-5054
• Solderable through-hole ground pin 1252-7150
3
Ordering Information
1. With the purchase of a new
54800-series Infiniium oscilloscope:
•Option #012 (54810A, 54815A
54820A, 54825A, 54835A)
for 1156A . . . . . . . . . . . $1,695
•Option #013 (54845A) for
1157A . . . . . . . . . . . . . . $2,645
•Option #014 (54846A) for . . .
1158A . . . . . . . . . . . . . . $4,195
2. For existing 54800-Series Infiniium
oscilloscope customers order the
1156A**, 1157A**, or 1158A**
Each probe includes:
•Foam Case
•12 Resistive signal pins (orange) (E2640A)
• 2 Solderable-tip 5 cm resistive signal leads
(E2638A)
• 2 Socket-end 5 cm resistive signal leads
(01156-82105)
• 2 Socket-end 10 cm resistive signal leads
(01156-82108)
• 4 Micro clips (E2639A)*
• 12 Ground blade assemblies (E2641A)
• 12 Solderable SMT ground pins
(1253-5054)
• 12 Solderable through-hole ground pins
(1252-7150)
• 12 Offset ground pins (01156-27606)
• 2 Solderable-tip 5 cm ground leads
(E2638A)
• 2 Socket-end 5 cm ground leads
(01156-82103)
• 2 Socket-end 5 cm, 90° pin ground leads
(01156-82104)
• 1 User and Service Guide
• One-year warranty
* The 1156A only comes with 2 micro clips.
To order additional quantities, see
Accessories.
Accessories
E2637A 1158A performance kit
(includes 2 solderable
ground sockets with
2 green resistive
signal pins) . . .$195
E2638A Solderable - tip 5 cm
resistive signal leads (10)
with ground leads (3)
. . . . . . . . . . . . .$115
E2639A Micro clips,
Qty. 4 . . . . . . . . .$65
E2640A Resistive signal pins,
(orange) Qty. 8
. . . . . . . . . . . . . .$85
E2641A Ground blade assembly,
Qty. 8 . . . . . . . .$140
E2649A Performance verification
kit (includes 2 50Ω PV
fixtures with 8 green
resistive signal pins)
. . . . . . . . . . . . .$995
E2654A EZ-Probe® Positioner
. . . . . . . . . . .$2,095
** The Infiniium 54800-Series scope
requires version A.04.30 or greater of
the application software to work with
the 1156A/7A/8A probes. An LS-120
drive is required for this upgrade.
To receive your free Infiniium
software update, go to our Infiniium
web site:
www.agilent.com/find/Infiniium1
Probe Recommendation Table
Be sure your probe has enough bandwidth to utilize the full performance your scope offers. Use the
selection table below for recommended configurations.
Infiniium 54800-Series oscilloscope Probe System Bandwidth
54835A (1.0 GHz) 1156A (1.5 GHz) 1.0 GHz
54845A (1.5 GHz) 1157A (2.5 GHz) 1.5 GHz
54846A (2.25 GHz) 1158A (4.0 GHz) 2.25 GHz
Specifications and Characteristics
Bandwidth
1
(–3dB)
1156A >1.5 GHz
1157A >2.5 GHz
1158A >4 GHz
System Bandwidth
1 GHz 1156A with 54835A
1.5 GHz 1157A with 54845A
2.25 GHz 1158A with 54846A
Rise and Fall time (10% to 90%)
1156A <233 ps
1157A <140 ps
1158A <88 ps
calculated from tr = 0.35/bandwidth
Input Capacitance 0.8 pF
Input Resistance1100 kΩ 1%
Flatness , Swept Response
0.2 dB, 100 kHz to 100 MHz
0.4 dB, 100 MHz to 2.5 GHz
2.0 dB, 2.5 GHz to 4.0 GHz
Flatness, Step Response
15% overshoot, 35 ps input edge
10% overshoot, 75 ps input edge
2%, 1 ns after edge
Dynamic Range
2
>5.0 V peak-to-peak
dc Attenuation
1
10:1 ±3% before calibration
10:1 ±1% after calibration
Zero offset error referred to input
1
<30 mV before calibration
<5 mV after calibration
Offset Range
1
±15.0 V
Offset Accuracy
1
<3% of setting before
calibration
4
1% of setting after
calibration
4
Noise referred to input
3.0 mVrms
Propagation Delay
5.5 ns
Maximum Input Voltage
40 V peak, CAT I
3
ESD Tolerance
>5 kV from 100pF,
300Ω HBM
Temperature Drift
Offset: <1.0 mV/°C
Attenuation (Gain):
0.1 %/°C
Environmental Conditions
Temperature
Operating 0 °C to +55 °C
Non-operating –40 °C to +70 °C
Humidity
Operating Up to 95% relative
humidity
(non-condensing)
at +40 °C
Non-operating Up to 90% relative
humidity at +65 °C
Power Requirements from
AutoProbe Interface
+12 Vdc @ 3 mA typical
+ 5 Vdc @ 35 mA typical
–5 Vdc @ 37 mA typical
Weight Approximately 0.69 kg
1
Denotes warranted specifications, all others are typical
2
For waveforms with edges >3 ns, the dynamic range is 12.0 Vpeak-to-peak
3
Installation category (over voltage category) I: Signal level, special equipment, or parts of equipment, telecommunication,
electronic, etc., with smaller transient overvoltage than installation category (overvoltage category) II.
4
Probe calibrated to scope channel (under Probes Setup menu)
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Related literature
Infiniium 54800 Series Oscilloscope
Probes and Accessories data sheet
5968-7141EUS/EN
Infiniium 54800 Series
Oscilloscopes product overview
5980-2397EUS/EN
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Product specifications and descriptions in this
document subject to change without notice.
© Agilent Technologies, Inc. 2001
Printed in USA
September 17, 2001
5988-3361E
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