Keysight 1146B
AC/DC Current Probe
User’s Guide
Notices
CAUTION
WARNING
© Keysight Technologies, Inc. 1996 - 2014
No part of this manual may be reprod uced in any form
or by any means (including electronic storage and
retrieval or translation into 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
01146-92005
Second Edition, October 2014
Printed in Malaysia
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, includ ing but not limited to the impl ied warranties of merchantability and fitness for a particular
purpose. Keysight shall not be liable for errors or for
incidental or consequential damages in connection
with the furnishing, use, or performance of this document or of any information contained herein.
Should Keysight 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.
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. Government users will receive no greater
than Limited Rights as defined in FAR 52.227-14
(June 1987) or DFAR 252.227-7015 (b)(2) (November
1995), as applicable in any 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 resul t in personal injury or
death. Do not proceed beyond a WARNING
notice until the indicated conditions are fully
understood and met.
Technology Licenses
The hardware and/or software described in this document are furnished under a license and may be used
or copied only in accordance 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 subcontract, 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
2
Contents
Operation / 5
Before Using the Probe / 5
To Install the Battery / 7
To Perform a Current Measurement / 8
To Clean the Probe / 8
Product Markings / 9
Safety / 10
Concerning the Oscilloscope or Voltage Measuring
Instrument to Which the Probe is Connected / 11
Specifications / 13
Characteristics / 14
Safety Standards / 16
Typical Response Curves / 16
Performance Verification / 18
If the Probe Fails a Test / 19
Test 1. DC Current Measurement Accuracy (10 mV/A
range) / 20
Test 2. AC Current Measurement Accuracy (10 mV/A
range) / 21
Test 3. Bandwidth (10 mV/A range) / 22
Test 4. DC Current Measurement Accuracy (100 mV/A
range) / 23
Test 5. AC Current Measurement Accuracy (100 mV/A
range) / 24
Test 6. Bandwidth Check (100 mV/A range) / 25
3
4
Keysight 1146B AC/DC Current Probe
User’s Guide
Operation
The 1146B AC/DC Current Oscilloscope Probe expands
oscilloscope applications in industrial, automotive or power
environments, and is ideal for analysis and measurement of
distorted current waveforms and harmonics. The probe permits
accurate display and measurement of currents from 100 mA to
100A rms, DC to 100 kHz without breaking into the circuit. The
probe uses Hall effect technology to measure AC and DC signals.
The probe connects directly to an oscilloscope through a 2 meter
coaxial cable with an insulated BNC.
The 1146B probe is compatible with any analog or digital
oscilloscope or other voltage measuring instrument which has the
following features:
- BNC input connector.
- Range capable of displaying 0.2V to 0.5V per division.
- Minimum input impedance of 1 M
Ω.
Before Using the Probe
- Install the battery that was shipped with the probe. Refer to
“To Install the Battery" on page 7.
- Read the warnings listed under “Safety" on page 10.
- Confirm that the probe has not been damaged in transit. If the
unit is damaged, or fails to operate according to the
specifications, contact your dealer or Keysight representative.
- Check that the contents of the shipment agree with the
packing slip. If anything is missing, contact your nearest
Keysight Technologies, Inc. Sales Office. If the shipment was
damaged, contact the carrier, then contact the nearest
Keysight Technologies, Inc. Sales Office.
5
Figure 1 Control and Connector Identification
Zero-Adjust Knob
Operation
Use the zero adjust knob to eliminate the probe’s offset before
performing a measurement.
Battery Power Indicator
To ensure proper readings with your current probe, be sure that
the green battery indicator is lit during measurement. If not,
replace the 9V battery as described in “To Install the Battery" on
page 7.
Peak Overload (OL) Indicator
If the red Peak Overload indicator illuminates during
measurement, this indicates that the peak value exceeds the
instrument response level and that the output is distorted. Use the
range selection switch to change the probe to a higher range, if
possible.
Range Selection Switch
Use the range selection switch to turn the probe OFF and to select
from two ranges: 10 mV/A and 100 mV/A.
6
WARNING
It is possible to change the current probe ‘s range without removing the
WARNING
probe from the current carrying conductor, but never exceed the
permissible peak ratings of 1000 mV peak or 2000 mV peak-to-peak
maximum. The peak ratings by range are: 10A peak on the 100 mV/A
range, 100A peak on the 10 mV/A range.
To Install the Battery
Before using the probe for the first time, you must install the
battery. When the probe is turned on, the green battery indication
LED should light up. If not, replace the battery.
1 Disconnect the probe from the circuit and the oscilloscope.
Do not replace the battery while probe is in use.
2 Set the probe’s switch to the OFF position.
3 Unscrew the battery compartment screw (shown on Figure 1 on
page 6) and pull out the battery compartment cover.
4 Install the new 9V battery and put the cover back on.
Operation
7
To Perform a Current Measurement
WARNING
WARNING
WARNING
1 Read the warnings in “Safety" on page 10.
2 Connect the current probe to an input channel on the
oscilloscope.
Connect the probe to the oscilloscope or voltage measuring instrument
before clamping the probe around a conductor.
3 Set the current probe to its least sensitive range (10 mV/A).
4 Select the 0.5 V/division range on the oscilloscope.
5 Clamp the probe on the conductor to be measured and read the
current flowing directly on your oscilloscope.
You may also use your oscilloscope to amplify the signal while
using the 100 mV/A probe range (which offers the best accuracy
and least phase shift).
It is possible to change the range on the current probe without removing
the probe from the current carrying conductor, but never exceed the
permissible peak ratings of 1000 mV peak or 2000 mV peak-to-peak
maximum. The peak ratings by range are: 10A peak on the 100 mV/A
range, 100A peak on the 10 mV/A range.
Operation
To Clean the Probe
1 Remove the probe from any circuit under test and from the
oscilloscope.
2 Clean the external surfaces of the probe with a soft cloth
dampened with a mixture of mild detergent and water.
3 Clean the mating surfaces of the probe’s jaws so that they are free
of dirt or foreign matter. If rust is present, gently clean the mating
surfaces with a soft cloth that has been lightly oiled with standard
machine oil. Do not leave excessive oil residue.
Make sure that the probe is completely dry before reconnecting it to a
power source.
8
Product Markings
Product Markings
This symbol indicates the Environmental Protection Use
Period (EPUP) for the product’s toxic substances for the
China RoHS requirements.
The CE symbol indicates the European Community.
CAUTION. Risk of Danger. Refer to the manual for more
information.
CAUTION. Risk of Electric Shock. Refer to the manual for
more information.
This symbol signifies that the probe is protected by
double or reinforced insulation. Only use specified
replacement parts when servicing the probe.
Earth terminal symbol: Used to indicate a circuit
common connected to grounded chassis.
WEEE Directive notice. This marking is on a notice
sticker and is not actually fixed to the product.
9
Loading...