Keysight N2893A
100 MHz Current Probe
User’s
Guide
Notices
CAUTION
WARNING
DANGER
© Keysight Technologies, Inc. 2013 - 2014,
2016, 2017, 2018
No part of this manual may be reproduced in
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a foreign language) without prior agreement
and written consent from Keysight Technologies, Inc. as governed by United States and
international copyright laws.
Manual Part Number
N2893-97004
Edition
August 2018
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.
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by applicable law, Keysight disclaims all
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regard to this manual and any information
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and the user have a separate written agreement with warranty terms covering the
material in this document that conflict with
these terms, the warranty terms in the separate agreement shall control.
Technology Licenses
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and may be used or copied only in accordance with the terms of such license.
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Defense FAR Supplement ("DFARS")
227.7202, the U.S. government acquires
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Software. With respect to any technical data
http://www.key-
. The license set
as defined by FAR 2.101, pursuant to FAR
12.211 and 27.404.2 and DFARS 227.7102,
the U.S. government acquires no greater than
Limited Rights as defined in FAR 27.401 or
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technical data.
Safety Notices
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.
A WARNING 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 personal injury or death.
Do not proceed beyond a WARNING
notice until the indicated conditions
are fully understood and met.
A DANGER notice that incorrect operation presents extreme danger of accident resulting in death or serious injury
to the user.
2 N2893A 100 MHz Current Probe User’s Guide
Contents
Introduction / 5
Features / 5
Scope Compatibility / 5
Inspecting the Probe / 6
Cleaning the Probe / 6
Safety Information / 7
N2893A Components / 9
Using the Probe / 11
Making Measurements / 11
Obtaining the Best Measurement Accuracy / 12
Demagnetization and Zero Offset / 14
Protecting the Probe Against Damage Resulting from Excessive
Input / 15
Built-in Safety Function / 15
Performance Verification for N2893A / 17
Procedure / 17
Characteristics and Specifications / 21
Plots / 24
Product Markings and Labels / 26
Service Strategy / 27
To return the Probe to Keysight Technologies for Service / 27
Index
N2893A 100 MHz Current Probe User’s Guide 3
Contents
4 N2893A 100 MHz Current Probe User’s Guide
Introduction
Keysight N2893A 100 MHz Current Probe
User’s Guide
The N2893A is a wide-band, DC to 100 MHz, active current probe. The probe features low
noise and low circuit insertion loss. The probe has the following operating regions that
provide a wide, flat frequency response.
- In the DC to low frequency AC region, the probe operation is based on the negative
feedback system that includes the thin film Hall element as a detector.
- In the high frequency region, the probe operates as a current transformer.
The N2893A is ideal for acquiring high transient time signals such as those found in motor
controllers, in switching power supplies, and in current amplifiers driving inductive loads.
The probe connects to the InfiniiVision and Infiniium oscilloscopes with 1 MΩ AutoProbe
interface. The oscilloscope’s AutoProbe interface provides the probe power, probe offset,
and auto configuration of probe type and attenuation setting thereby making the current
measurements as simple as those made with active voltage probes.
To use this probe effectively and to ensure a long operational life, read this user’s guide
carefully and retain it for future reference.
Features
- Highly accurate current detection
- Split-core construction allows an easy circuit connection
- Wide bandwidth - DC to 100 MHz
- Connects directly to InfiniiVision and Infiniium oscilloscopes with 1 M
interface
- Auto degauss and offset elimination
- Auto activation of the built-in safety feature if the input current exceeds the rated
continuous maximum to prevent damage resulting from overloading.
Scope Compatibility
- 3000 X-Series oscilloscopes
- 5000, 6000 (except 100 MHz models), and 7000 Series oscilloscopes with software
version 6.10 or higher
- 9000A Series with software version 3.0 or higher
- 90000 X-Series with the N5449A adapter
Ω AutoProbe
5
N2893A Probe
WARNING
Inspecting the Probe
Cleaning the Probe
- Inspect the shipping container for damage.
- Keep the damaged shipping container or cushioning material until the contents of the
shipment have been checked for completeness and the probe has been checked
mechanically and electrically.
- Check the accessories. If the contents are incomplete or damaged, notify your Keysight
Technologies Sales Office.
- Inspect the probe. If there is mechanical damage or defect, or if the probe does not
operate properly or pass calibration tests, notify your Keysight Technologies Sales
Office.
- If the shipping container is damaged, or the cushioning materials show signs of stress,
notify the carrier as well as your Keysight Technologies Sales Office. Keep the shipping
materials for the carrier’s inspection. The Keysight Technologies office will arrange for
repair or replacement at Keysight Technologies’ option without waiting for claim
settlement.
If the probe requires cleaning, disconnect it from the oscilloscope and gently clean the
external surface of the probe with a soft cloth dampened with a mild soap and water
solution.
Do not try to clean the unit using cleaners containing organic solvents such as
benzine, alcohol, acetone, ether, ketones, thinners, or gasoline. These may cause
discoloration or damage.
Make sure the probe is completely dry before reconnecting it to the oscilloscope.
Cleaning the Sensor Head
The presence of foreign substances such as dust on the mating surfaces of the probe’s
sensor head can cause acoustic resonance and degraded measurements, Therefore, keep
these mating surfaces clean by gently wiping with a soft cloth.
6 N2893A 100 MHz Current Probe User’s Guide
Safety Information
WARNING
WARNING
DANGER
DANGER
WARNING
WARNING
WARNING
This manual provides information and warnings essential for operating this equipment in a
safe manner and for maintaining it in safe operating condition. Before using this equipment,
be sure to carefully read the following safety notes.
This equipment is designed according to IEC 61010-1 Safety Standards, and has been tested for
safety prior to shipment. Incorrect measurement procedures could result in injury or death, as well as
damage to the equipment. Please read this manual carefully and be sure that you understand its
contents before using the equipment. The manufacturer disclaims all responsibility for any accident or
injury except that resulting due to defect in its product.
Do not install substitute parts or perform any unauthorized modification to the instrument. Only
Keysight service centers should perform repair/maintenance on the equipment.
To avoid short circuits and accidents that could result in injury or death, use the N2893A probe only
with insulated power lines carrying 300V or less.
N2893A Probe
Never use this sensor on uninsulated conductors. The core and shield case are not
insulated. Before clamping the insulated conductor being measured, make sure that the
insulation on the conductor is undamaged. Any damage to the insulation can cause an
electric shock.
Do not subject the unit to vibrations or shocks during transport or handling. Be especially careful to
avoid dropping the unit.
Do not store the unit where it will be exposed to direct sunlight, high temperature, high humidity, or
condensation. If exposed to such conditions, the unit may be damaged, the insulation may deteriorate,
and the unit may no longer satisfy its specifications.
This unit is not constructed to be dustproof, so do not use it in a very dusty environment.
N2893A 100 MHz Current Probe User’s Guide 7
N2893A Probe
WARNING
WARNING
WARNING
The sensor head is a precision assembly including a molded component, a ferrite core, and a Hall
effect element. It may be damaged if subjected to sudden changes in ambient temperature, or
mechanical strain or shock, and therefore great care should be exercised in handling it.
To avoid scratching the surfaces of the Hall effect elements, keep the core section of the sensor
closed, except when clamping it around the insulated conductor to be measured.
Before turning on the instrument, you must connect the protective earth terminal of the instrument to
the protective conductor of the (mains) power cord. The mains plug shall only be inserted in a socket
outlet provided with a protective earth contact. You must not negate the protective action by using an
extension cord (power cable) without a protective conductor (grounding).
8 N2893A 100 MHz Current Probe User’s Guide
N2893A Components
N2893A Probe
Figure 1 Probe components
Opening Lever
Operating lever for opening the sensor head. Always use this lever to open the sensor head.
Sensor Head
This clamps the conductor being measured, and carries out the actual current
measurement. It is a precision assembly including a molded component, a ferrite core, and
a Hall effect element. It may be damaged if subjected to sudden changes in ambient
temperature, or mechanical strain or shock. Care should be exercised when handing the
sensor head.
Demagnetizing Switch (DEMAG)
This demagnetizes the core if it has been magnetized by switching the power on and off, or
by an excessive input. Always carry out demagnetizing before measurement. The probe
should be connected to the oscilloscope for the demagnetizing process. This process takes
about one second. During demagnetizing, a demagnetizing waveform is output. Refer to
“Demagnetization and Zero Offset" on page 14
N2893A 100 MHz Current Probe User’s Guide 9
N2893A Probe
NOTE
NOTE
Coarse Adjustment Trimmer
This adjustment should only be carried out if the probe offset is outside the range of the
zero adjustment dial.
The output of this unit is terminated internally. The high-impedance such as 1 MΩ input
impedance will be automatically selected on the Infiniium oscilloscope, as the probe is
plugged into the AutoProbe interface. With an input impedance of 50Ω, accurate
measurement is not possible.
The probe output sensitivity 0.1 V/A will be automatically selected, as the probe is
plugged into the AutoProbe interface. With a different output sensitivity, accurate
measurements are not possible.
10 N2893A 100 MHz Current Probe User’s Guide
Using the Probe
WARNING
NOTE
NOTE
Making Measurements
1 Power on the oscilloscope.
2 Connect the probe to one of the scope’s channels.
N2893A Probe
Ensure all safety warnings and precautions are followed. Before using the probe,
study the warning and precautions in “Safety Information" on page 7.
Also, take precautions mentioned in “Protecting the Probe Against Damage
Resulting from Excessive Input" on page 15.
This probe is NOT compatible with 50Ω only Infiniium oscilloscopes (for example, the
90000A series oscilloscopes). Use the N5449A high impedance probe adapter for use
with Infiniium 90000X Series oscilloscope. The input coupling is automatically selected
to DC, as the terminator is plugged into the AutoProbe interface.
Figure 2 Connecting the Probe to the Oscilloscope
N2893A 100 MHz Current Probe User’s Guide 11
When the probe is connected to a scope channel, the AutoProbe interface recognizes the
probe as an N2893A and automatically configures several settings on the channel to
which the probe is connected.
N2893A Probe
NOTE
CAUTION
NOTE
Immediately after powering on, this unit may be subject to an appreciable offset drift
due to the effect of self-heating. To counteract this, allow the unit to warm up for
about 30 minutes before carrying out measurements.
3 Perform the steps described in “Demagnetization and Zero Offset" on page 14.
4 With the probe’s sensor head around the insulated conductor to be measured, slide the
Opening Lever of the probe into the Locked position as shown in Figure 3. While doing so,
ensure that the UNLOCK indication disappears which indicates that the sensor head is
properly closed. If the sensor head is not properly closed, accurate measurements will not
be possible.
Always use the opening lever when opening the probe’s sensor head. If an
upper core is forced to open when the sensor head is locked, the
open-close mechanism can be damaged.
Figure 3 Use the Opening Lever
Under certain circumstances, oscillation may occur if the probe is connected to the
AutoProbe interface while the oscilloscope is on. This does not indicate a
malfunction. Oscillation can be stopped and operation can be restored to normal by
opening and closing the sensor head.
Obtaining the Best Measurement Accuracy
To obtain the best measurement accuracy, ensure that:
- The current direction indicator on the sensor aligns with actual current direction in the
insulated conductor.
- The sensor opening lever is in the Locked position and the sensor head is properly
closed.
12 N2893A 100 MHz Current Probe User’s Guide
N2893A Probe
NOTE
NOTE
NOTE
- The conductor under test is positioned in such a way that it is in the center of the clamp
aperture.
Accurate measurement may be impossible in locations subject to strong external
magnetic fields, such as transformers and high-current conductors, or in locations
subject to strong external electric fields, such as radio transmission equipment.
At high frequencies, common mode noise may affect measurements taken on the high
voltage side of circuits. If this occurs, reduce the frequency range of the measuring
instrument or clamp onto the low-voltage side of the circuit as shown in Figure 4, as
appropriate.
Figure 4 Clamp Onto the Low-Voltage Side of Circuit
When performing continuous measurements, it is necessary to be aware that the zero
offset voltage will drift if the ambient temperature changes.
At some frequencies, some sound may be produced by resonance. This has no effect
on measurements.
N2893A 100 MHz Current Probe User’s Guide 13
N2893A Probe
NOTE
Demagnetization and Zero Offset
Allow both the oscilloscope and probe to warm up for at least 30 minutes before
making these adjustments.
1 Set the channel offset to 0V for the oscilloscope channel to which the probe is
connected.
2 Ensure that the probe sensor is NOT clamped around any conductors.
3 Slide the probe’s Opening Lever into the Locked position as shown in Figure 5.
Figure 5 Use the Opening Lever
4 Press the probe’s DEMAG button shown in Figure 1 on page 9. A demagnetization
waveform will be displayed for a short time on the channel to which the probe is connected.
Wait until this waveform is no longer displayed.
5 On Infiniium oscilloscopes:
a Click Setup > Probe Calibration.
b Click the AutoZero button to automatically start the demagnetization
followed by the zero offset routine.
c Follow the on-screen instructions.
6 On InfiniiVision oscilloscopes:
Press the scope’s channel button (1, 2, 3, or 4) for the channel you are using.
a
b Click the Probe softkey (under the display) and then press the key to
automatically start the demagnetization and zero offset process.
c Follow the on-screen instructions.
14 N2893A 100 MHz Current Probe User’s Guide
N2893A Probe
WARNING
WARNING
WARNING
Protecting the Probe Against Damage Resulting from Excessive
Input
The steps and guidelines provided in this topic must be followed to ensure that your
probe is protected against any damage caused due to the input current that exceeds
the maximum continuous input range for the probe.
The maximum continuous input range is based on heat that is internally generated during
measurement. This range varies according to the frequency of the current being measured.
See Figure 11 on page 24 to know about the maximum continuous input range for the
N2893A probe. It is recommended not to exceed this range.
Built-in Safety Function
In the following situations, the generated heat activates a built-in safety function in
the probe that blocks normal output to prevent probe damage resulting from heating.
- If the input current exceeds the maximum continuous input range.
- Continuous input for an extended period of time (even if the input current does not
exceed the rated continuous maximum).
- At high ambient temperatures, the built-in safety function may activate even at
current input levels below the rated continuous maximum.
In such situations, when the built-in safety function is activated:
1 Remove the input immediately (unclamp the sensor from the conductor being
measured or reduce the input current to zero).
2 Wait until the sensor on the probe had the sufficient time to cool before resuming
operation.
If there is continuous input of current exceeding the rated maximum or repeated
activation of the built-in safety function, it may result in damage to the unit.
N2893A 100 MHz Current Probe User’s Guide 15
N2893A Probe
WARNING
Do NOT measure current such that the total probe current consumption exceeds the
allowable AutoProbe interface current consumption. The excess current
consumption causes a temporary shutdown of the oscilloscope’s power supply for
safety. Quit the measurement and cycle the power of the oscilloscope, if the
shutdown occurs. The typical probe current consumption from the AutoProbe
interface is shown in Figure 6.
Figure 6 Typical Probe Consumption
16 N2893A 100 MHz Current Probe User’s Guide
Performance Verification for N2893A
Use the following procedure to test the warranted Accuracy specifications for the N2893A
probe (as listed on page 21). The recommended test interval to warrant performance of this
probe is once a year. However, you can also test the probe’s performance as and when
required using the recommended test equipment and by following the procedure
documented in this chapter.
Table 1 Required Test Equipment
Description Minimum Requirements Recommended Test Equipment
N2893A Probe
Oscilloscope Bandwidth ≥ 250 MHz
Amplitude accuracy: ≤ 0.4%
Two Digital Multimeters - Keysight U1251B Handheld
AC Current Generator AC 10 A
wave
Amplitude accuracy: ≤0.3%
Probe Adapter - Keysight N1022B Probe Adapter
Power Supply - Keysight 1143A Probe Offset
Test Cables (with banana jacks) - -
BNC Cable - -
BNC (F) to Banana Adapter - -
NMD 3.5mm (M) to 3.5mm (F)
adapter
3.5mm (M) to BNC (F) adapter - -
--
, 50 or 60 Hz, sine
rms
Infiniium or InfiniiVision with
1MΩ input
Digital Multimeter or equivalent
DVM/DMM
Keysight AC6800 or Wavetek
9100
Control and Power Module
Procedure
1 To provide power to the probe, connect the power cord of the N1022B probe
adapter to the Power connector on the front panel of the 1143A power module.
Then connect the N2893A probe’s output to the N1022B probe adapter’s input.
N2893A 100 MHz Current Probe User’s Guide 17
N2893A Probe
Figure 7 Providing power to the N2893A probe
2 Turn on the equipment.
3 Wait for 20 minutes to allow the probe to warm up.
4 Connect the test setup as shown in Figure 8 on page 19 as per the following substeps.
a Clamp the N2893A probe around the test cable <1> and lock the sensor head of the
probe.
b Press the DEMAG button on the probe.
c Set the digital multimeter (DMM <1>) to A
rms
mode.
d Connect the test cable <1> to the positive terminal of the AC current generator's
OUTPUT terminal block and to the current input of the DMM <1>.
e Connect the test cable <2> to the negative terminal of the AC current generator's
OUTPUT terminal block and to negative input of the DMM <1>.
f Using the DMM <1>, set the output current of AC current generator to 6A
rms
.
18 N2893A 100 MHz Current Probe User’s Guide
N2893A Probe
Figure 8 Setting up AC Current Generator
5 Set the DMM <2> to V
6 As displayed in Figure 9 on page 20, connect a BNC cable to the:
a N1022B adapter’s output using the NMD 3.5mm (M) to 3.5mm (F) adapter and 3.5mm (M)
to BNC (F) adapter.
b DMM <2> using a BNC (F)-to-banana adapter.
This completes the test setup.
rms
mode.
N2893A 100 MHz Current Probe User’s Guide 19
N2893A Probe
.
Figure 9 Complete Test Setup
7 Measure the current and record V
8 Calculate gain as follows:
Gain = V
rms
/A
rms
Gain should be between 0.99 and 1.01 (+/-1% gain accuracy).
9 Remove the test cable and AC current generator from the N2893A probe.
output of the probe as displayed on the DMM <2>.
rms
20 N2893A 100 MHz Current Probe User’s Guide
Characteristics and Specifications
Table 2 Measurement Characteristics
N2893A Probe
Item Characteristic
a
Probe Bandwidth DC to 100 MHz (–3 dB)
Accuracy (Probe Only)
Risetime
c
Maximum Continuous Current 15A peak, 15 A
b
±1% of reading ±1mV (DC or 45 Hz to 66 Hz)
~ 3.5 ns
, 10 A
30A peak, 30 ADC, 24 A
DC
rms
(when one probe is used with InfiniiVision
rms
3000XT, 5000/6000/7000 scope)
Maximum Non-continuous Peak
Current (for Pulse Widths ~
10µs)
50A
30A peak,
32A peak (when one probe is used with InfiniiVision 3000XT,
5000/6000/7000 scope)
Probe Sensitivity 0.1V/A
Noise ~ 2.5 mA
(with 20 MHz Bandwidth limiting)
rms
Insertion Impedance See Figure 12 on page 25.
Temperature Coefficient ~ ±2% (0°C to 40°C)
Maximum Circuit Voltage 300V (refer to safety considerations and product compliances)
Not rated for CAT II, III, IV
aRequires 1MΩ termination. Valid for 23°C ±3°C (73°F ±5°F), at least 30 minutes after power on.
b This is a specification and is guaranteed at 23°C ±3°C (73°F ±5°F).
c Rise time is calculated as: Tr = 0.35/Bandwidth.
N2893A 100 MHz Current Probe User’s Guide 21
N2893A Probe
Table 3 Power Supply Characteristics
Item Characteristics
DC supply Voltage Requirements ±12Vdc ±1V
Probe Power Consumption Increases with measured current. 3 VA when measuring 15A
Table 4 Mechanical Characteristics
Item Characteristics
Maximum Cable Diameter 5 mm (0.2 inch)
Sensor Cable Length 1.5 m (59 inches)
Dimensions (Sensor) 175 mm x 18 mm x 40 mm
6.89 in. x 0.71 in. x 1.6 in.
Dimensions (Terminator) 28 mm x 81 mm x 24 mm
1.1 in. x 3.2 in. x 0.94 in
Weight 210 g (7.4 oz.)
Accessories Supplied Storage case, calibration certificate
22 N2893A 100 MHz Current Probe User’s Guide
Table 5 Environmental Characteristics
Item Characteristics
Use Indoor
Operating Temperature Range 0°C to 40°C (32°F to 104°F)
Storage Temperature Range –10°C to 50°C (14°F to 122°F)
N2893A Probe
Maximum Relative Humidity
(Operating or Storage)
Maximum Altitude 2000m
80% (no condensation)
N2893A 100 MHz Current Probe User’s Guide 23
N2893A Probe
Plots
Figure 10 Frequency Response of N2893A
Figure 11 Continuous Maximum Input Rating of N2893A
24 N2893A 100 MHz Current Probe User’s Guide
Figure 12 Insert Impedance of N2893A
N2893A Probe
Figure 13 Amplitude Accuracy Characteristic of N2893A
N2893A 100 MHz Current Probe User’s Guide 25
N2893A Probe
Product Markings and Labels
Table 6 Instrument Markings
Marking Description
Indicates the maximum circuit voltage and product compliance.
(Not rated for CAT II, III, IV)
This product may not be safe to put around an uninsulated conductor.
Indicates that only insulated conductors suited to the voltage of the circuit
under test can be measured.
DO NOT use with an uninsulated conductor.
This symbol indicates the Environmental Protection Use Period (EPUP) for
the product’s toxic substances for the China RoHS requirements.
The CE mark is a registered trademark of the European Community.
ISM GRP 1-A denotes the instrument is an Industrial Scientific and Medical
Group 1 Class A product. ICES/NMB-001 indicates product compliance
with the Canadian Interference-Causing Equipment Standard.
CAUTION. Risk of Danger. Refer to this manual for more information.
Indicates DC (Direct Current) or AC (Alternating Current).
Indicates a risk of Electric Shock. Refer to the manual for more
information.
Earth terminal symbol: Used to indicate a circuit common
connected to grounded chassis.
26 N2893A 100 MHz Current Probe User’s Guide
Service Strategy
For calibration testing, return the N2893A probe to a Keysight Service Center. If the probe is
under warranty, normal warranty services apply. If the probe is not under warranty, repair
costs will be applied.
To return the Probe to Keysight Technologies for Service
Call (800) 829-4444 for further details and the location of your nearest Keysight
Technologies Service Office or go to www.keysight.com/find/assist for contact information.
1 Write the following information on a tag and attach it to the probe.
- Name and address of the owner
- Probe model number
- Description of service required or failure indications
2 Retain all accessories.
3 Return the probe in its case or pack the probe in foam or other shock-absorbing material
and place it in a strong shipping container. You can use the original shipping materials or
order materials from an Keysight Technologies Sales Office. If neither are available, place 3
to 4 inches of shock-absorbing material around the instrument and place it in a box that
does not allow movement during shipping.
4 Seal the shipping container securely.
5 Mark the shipping container as FRAGILE. In all correspondence, refer to the instrument by
model number and full serial number.
N2893A Probe
N2893A 100 MHz Current Probe User’s Guide 27
N2893A Probe
28 N2893A 100 MHz Current Probe User’s Guide
Index
Index
A
AC accuracy, 17
accuracy, 21
AutoProbe, 11
C
cable diameter, 22
calibration, 17
characteristics and specifications, 21
China RoHS requirements, 26
coarse adjustment trimmer, 10
current direction indicator, 12
D
DC supply voltage requirements, 22
DEMAG, 9, 14
demagnetizing switch, 9
dimensions (sensor), 22
dimensions (terminator), 22
H
high frequencies, 13
high transient time signals, 5
maximum current, 21
maximum peak current, 21
maximum relative humidity, 23
measurement procedure, 11
N
noise, 21
O
opening lever, 9
opening sensor head, 12
operating temperature range, 23
P
probe bandwidth, 21
probe parts identification, 9
probe power consumption, 22
probe sensitivity, 21
R
risetime, 21
S
W
weight, 22
I
IEC 61010-1 Safety Standards, 7
impedance, insertion, 21
insertion impedance, 21
inspection, 6
instrument markings, 26
ISM1-A, 26
L
labels, 26
safety warnings, 7
sensitivity, 21
sensor cable length, 22
sensor head, 9
service, 27
storage temperature range, 23
T
temperature coefficient, 21
temperature range, 23
U
M
maximum altitude, 23
maximum cable diameter, 22
maximum circuit voltage, 21
N2893A 100 MHz Current Probe User’s Guide 29
use, 23
using, 12
Index
30 N2893A 100 MHz Current Probe User’s Guide
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