Agilent Technologies N2797A User manual

N2797A
Extreme Temperature
Single-Ended Active
Probe
User’s Guide

Notices
© Agilent Technologies, Inc. 2013
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Manual Part Number
N2797–97000
Edition
July 2013
Designed in USA
Agilent Technologies, Inc.
Oscilloscope Products Division
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2N2797A User’s Guide

Contents
N2797A User’s Guide 3
Contents
1Using 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
2Probe Calibration
Calibrating the Probe on Infiniium Oscilloscopes 28
Calibrating the Probe on InfiniiVision Oscilloscopes 31
3Characteristics and Specifications
Dimensions 35
4Performance Data Plots
5Performance Verification
Test 1. DC Input Resistance 41
Test 2. Bandwidth 42
Performance Test Record 49

4N2797A User’s Guide
Contents

N2797A User’s Guide 5
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.

6N2797A User’s Guide
1Using the Probe
For high signal integrity probing, the N2797A 1.5 GHz active
probe is a perfect complements to Agilent’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.
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
Probe Features
N2797A User’s Guide 7
Probe Features
Oscilloscope Compatibility The N2797A probe is compatible with the Agilent
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.
NOTE The N2797A probe is designed for oscilloscopes with 1 MW
AutoProbe-interface channel inputs.
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.
Is Your Oscilloscope Software
Up-to-Date?
Agilent periodically releases
software updates to support your
probe, fix known defects, and
incorporate product enhancements.
To download the latest firmware, go
to www.agilent.com and search for
your oscilloscope’s topic. Click on
the “Drivers, Firmware & Software”
tab.
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 Features
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
Probe Features
N2797A User’s Guide 9
Figure 2 Accessories Supplied With the Probe (Not to Scale)

10 N2797A User’s Guide
1Using the Probe
Probe Features
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