Keysight Technologies N2797A Manuale utente
Keysight N2797A
Extreme Temperature
Single-Ended Active Probe
User’s
Guide
2N2797A User’s Guide
Notices
© Keysight Technologies, Inc. 2013 - 2014
No part of this manual may be reproduced in
any form or by any means (including elec-
tronic storage and retrieval or translation into
a foreign language) without prior agreement
and written consent from Keysight Technolo-
gies, Inc. as governed by United States and
international copyright laws.
Manual Part Number
N2797-97000
Edition
Second edition, October 2014
Published by:
Keysight Technologies, Inc.
1400 Fountaingrove Parkway
Santa Rosa, CA, 95403
Warranty
The material contained in this document is
provided “as is,” and is subject to being
changed, without notice, in future editions.
Further, to the maximum extent permitted
by applicable law, Keysight disclaims all
warranties, either express or implied, with
regard to this manual and any information
contained herein, including but not limited
to the implied warranties of merchantability
and fitness for a particular purpose. Key-
sight shall not be liable for errors or for inci-
dental or consequential damages in
connection with the furnishing, use, or per-
formance of this document or of any infor-
mation contained herein. Should Keysight
and the user have a separate written agree-
ment with warranty terms covering the
material in this document that conflict with
these terms, the warranty terms in the sepa-
rate agreement shall control.
Technology Licenses
The hardware and/or software described in
this document are furnished under a license
and may be used or copied only in accor-
dance with the terms of such license.
Restricted Rights Legend
If software is for use in the performance of a
U.S. Government prime contract or subcon-
tract, Software is delivered and licensed as
“Commercial computer software” as defined
in DFAR 252.227-7014 (June 1995), or as a
“commercial item” as defined in FAR 2.101(a)
or as “Restricted computer software” as
defined in FAR 52.227-19 (June 1987) or any
equivalent agency regulation or contract
clause. Use, duplication or disclosure of
Software is subject to Keysight Technologies’
standard commercial license terms, and
non-DOD Departments and Agencies of the
U.S. Government will receive no greater than
Restricted Rights as defined in FAR
52.227-19(c)(1-2) (June 1987). U.S. Govern-
ment users will receive no greater than Lim-
ited Rights as defined in FAR 52.227-14
(June 1987) or DFAR 252.227-7015 (b)(2)
(November 1995), as applicable in any tech-
nical data.
Safety Notices
CAUTION
A CAUTION notice denotes a hazard.
It calls attention to an operating
procedure, practice, or the like that,
if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
WARNING
A WARNING notice denotes a haz-
ard. It calls attention to an operat-
ing procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in personal
injury or death. Do not proceed
beyond a WARNING notice until the
indicated conditions are fully
understood and met.
N2797A User’s Guide 3
Contents
1UsingtheProbe/5
Probe Features / 7
Using the Accessory Tips and Grounds / 14
Dynamic Range and Offset Voltage Limitations / 20
Functional Test / 21
Inspecting the Probe / 22
Cleaning the Probe / 22
Returning the Probe for Service / 23
Safety Information / 24
2ProbeCalibration/27
Calibrating the Probe on Infiniium Oscilloscopes / 28
Calibrating the Probe on InfiniiVision Oscilloscopes / 30
3 Characteristics and Specifications / 31
Dimensions / 33
4PerformanceDataPlots/35
5 Performance Verification / 37
Test 1. DC Input Resistance / 39
Test 2. Bandwidth / 40
Performance Test Record / 46
Index
4N2797A User’s Guide
Contents
5
Keysight N2797A
User’s Guide
1 Using the Probe
Probe Features 7
Using the Accessory Tips and Grounds 14
Dynamic Range and Offset Voltage Limitations 20
Functional Test 21
Inspecting the Probe 22
Cleaning the Probe 22
Returning the Probe for Service 23
Safety Information 24
The N2797A single-ended active probe is designed to be used in extreme temperatures
environments. With a 2 meter cable and ability to operate in temperatures from –40°C to
+85°C, the N2797A probe is ideal for environmental labs. The probe’s bandwidth is 1.5 GHz.
The N2797A integrates many of the characteristics needed for today’s general-purpose,
high-speed probing, especially in digital system design, component
design/characterization, and educational research applications. Its 1 MΩinput resistance
and extremely low input capacitance (1 pF) provide ultra low loading of the device under
test. This, accompanied with superior signal fidelity, makes this probe useful for most of
today’s digital logic voltages. With a wide ±8V dynamic range and ±12V offset range, this
probe can be used in a wide variety of applications.
For high signal integrity probing, the N2797A 1.5 GHz active probe is a perfect
complements to Keysight’s 500 MHz – 600 MHz and 1 GHz bandwidth scopes.
The probe is powered directly by the InfiniiVision and Infiniium AutoProbe interface,
eliminating the need for an additional power supply. The probe also come with a number of
accessories that allow for easy connections to the circuit under test. Refer to “Supplied
Accessories" on page 8.
WARNING
Handle the probe with care to avoid injury, especially when it is fitted with the sharp spring or rigid tip.
6N2797A User’s Guide
1Using the Probe
CAUTION
This probe is an ESD sensitive devices, particularly at the probe tips. Follow standard ESD precautions
when handling. Remove tip accessories when storing the probe.
CAUTION
Before using the probe, refer to “Safety Information" on page 24.
CAUTION
Handle the probe cable carefully to avoid damaging it through excessive bending or pulling. Avoid any
mechanical shocks to the probe in order to guarantee accurate performance and protection.
Using the Probe 1
N2797A User’s Guide 7
Probe Features
Oscilloscope Compatibility
The N2797A probe is compatible with the Keysight oscilloscopes shown in Table 1. Up to
four probes can be connected to the oscilloscope. The table also lists the minimum required
firmware version for the oscilloscope.
Is Your Oscilloscope Software Up-to-Date? Keysight periodically releases software updates
to support your probe, fix known defects, and incorporate product enhancements. To
download the latest firmware, go to www.keysight.com and search for your oscilloscope’s
topic. Click on the “Drivers, Firmware & Software” tab.
NOTE
The N2797A probe is designed for oscilloscopes with 1 MWAutoProbe-interface channel
inputs.
Table 1 Compatible Oscilloscopes and Support
Oscilloscope Adapter Required
Infiniium Oscilloscopes (firmware version
¡
3.50 or above)
90000 Q-Series N5442A
90000 X-Series N5442A
90000A —
9000 H-Series —
9000A-Series —
InfiniiVision Oscilloscopes (firmware version
¡
2.11 or above)
4000 X-Series —
3000 X-Series —
8N2797A User’s Guide
1Using the Probe
Probe Headlight
The probe is equipped with a white LED headlights to illuminate the area around the probe
tip. This headlight has a fixed intensity and is turned on and off by pressing the button that
is located on the probe’s body.
Figure 1 Headlights and Button
Channel-Identification Rings
When multiple probes are connected to the oscilloscope, the channel identification rings
(yellow, green, blue, and purple) allow you to quickly determine which channel input is
associated with each probe. On the probe, place one colored ring near the probe’s channel
connector and place an identical color ring near the probe head.
Supplied Accessories
The probe comes with the accessories shown in Figure 2.
CAUTION
All of the supplied accessories can be used at the probe’s specified extreme temperature range of –40°C
to +85°C (–40°F to +185°F) except the flex nose clip and pico hook tips. These adapters have a slightly
reduced temperature range of –20°C to +80°C (–4°F to +176°F).
Using the Probe 1
N2797A User’s Guide 9
Figure 2 Accessories Supplied With the Probe (Not to Scale)
10 N2797A User’s Guide
1Using the Probe
Available Accessories
Table 3 shows the replacement accessories available in the N2798A replacement accessory
kit. The table lists the ambient operating temperatures for each accessory. Those
accessories that have the same temperature range as the probe are marked
“extreme temp”.
Table 4 shows additional accessories that work with the probe, but are not provided with
the probe. Notice that most of these accessories can not be used at extreme temperature
range of the probe.
Table 2 Supplied Accessories
Accessory
Ambient Operating
Temperature Quantity
Flex Nose Clip (red) –20°C to +80°C
(–4°F to +176°F)
2
Flex Nose Clip (black) 2
Pico Hook (red) 1
Pico Hook (black) 1
Rigid Probe Tip Same as probe
–20°C to +85°C
(–4°F to +185°F)
5
Solderable Tip (0.97 mm square) 10
Ground Blade 2
Y-Lead Adapter, long with damping resistor (9 cm) 2
Y-Lead Adapter, short with damping resistor (6 cm) 2
Right-Angle Ground (5 cm) 2
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