Document, Safety Information Addendum
(Safety and Regulatory Information Supplement for Keysight Truevolt Series DMMs)

This document is a supplement to document #5185-8500. In case of conflicting information between the two, the information in this document supersedes the information in #5185-8500 for the Keysight Truevolt Series Digital Multimeters (DMMs).

Notices

© Keysight Technologies, Inc. 2013 - 2017

No part of this manual may be reproduced 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.

Part Number 5950-9902, Edition 2

Verify Receipt of All Items

Verify that you received the following items. If anything is missing, please contact your nearest Keysight sales office or Keysight authorized reseller.

The latest product documentation is available at www.keysight.com/find/truevolt-doc. For documentation for mobile devices, see www.keysight.com/find/truevolt-mobilehelp.

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 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.

Safety Symbols

Alternating current Alternating current
Frame or chassis terminal
Standby supply. Unit is not completely disconnected from AC mains power when switch is off.
Caution Risk of electric shock
Caution Refer to accompanying documents
The CE mark is a registered trademark of the European Community.

The CSA mark with the 'c' and 'us' subscript indicates the instrument is certified to the applicable Canadian and United States of America standards respectively.

CAT II (300V)

IEC Measurement Category II. Inputs may be connected to AC mains power (up to 300 VAC) under Category II overvoltage conditions.

This product is marked with the ACMA RCM mark for compliance in Australia / New Zealand. A copy of the Manufacturer’s Australia Declaration of Conformity for this instrument can be obtained by contacting your local Keysight Technologies Sales Representative.

ISM 1-A This text indicates that the instrument is an Industrial Scientific and Medical Group 1 Class A product (CISPR 11, Clause 4).
ICES/NMB-001

This ISM device complies with Canadian ICES-001.

Cet appareil ISM est conforme à la norme NMB-001 du Canada.

This product complies with the WEEE Directive (2002/96/EC) marking equipment. The affixed product label indicates that you must not discard this electrical/electronic product in domestic household waste.

To return unwanted products, contact your local Keysight office, or see www.keysight.com/environment/product/ for more information.

This equipment is Class A suitable for professional use and is for use in electromagnetic environments outside of the home.

Contains one or more of the 6 hazardous substances above the maximum concentration value (MCV), 40 Year EPUP.

Safety Information

General

Do not use this product in any manner not specified by the manufacturer. The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions. Do not install substitute parts or perform any unauthorized modification to the product. Return the product to a Keysight Technologies Sales and Service Office for service and repair to ensure that safety features are maintained.

Product Grounding

The instrument is a Class 1 product and is provided with a grounding-type power cord set. The instrument chassis and cover are connected to the instrument electrical ground to minimize shock hazard. The ground pin of the cord set plug must be firmly connected to the electrical ground (safety ground) terminal at the power outlet. Any interruption of the protective earth (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury or death.

Cleaning

To prevent electrical shock, disconnect the instrument from AC mains power and disconnect all test leads before cleaning. Clean the outside of the instrument using a soft, lint-free, cloth slightly dampened with water.Do not use detergent or solvents.Do not attempt to clean internally.If needed, contact a Keysight Technologies Sales and Service office to arrange for proper cleaning to ensure that safety features and performance are maintained.

AC Power Cord

Removal of the AC power cord is the disconnect method to remove power from the instrument. Be sure to allow for adequate access to the power cord to permit disconnection from AC power. Use only the Keysight specified power cord for the country of use or one with equivalent ratings.

Do Not Remove Instrument Cover

Only qualified, service-trained personnel should remove the cover from the instrument. Service: Unplug instrument from wall outlet, remove power cord, and remove all probes from all terminals before servicing.

AC Mains Power Line Fuse

For continued protection against fire, replace the line fuse only with fuses of the specified type and rating. The instrument must be disconnected from AC mains power, and all measurement terminals must be disconnected before changing the fuse.

Self-Test

Before measuring any hazardous voltage or current, remove all test leads to the instrument, run the TEST:ALL? query from the remote interface, and read the result to verify that the instrument is performing properly.

The TEST:ALL? query is a self-test that returns +0 if the instrument passes and +1 if the instrument fails. You can also perform this query from the front panel by pressing [Shift] > [Utility] > Test/Admin > Self Test > Full Test. If this self-test fails, make sure that the instrument is repaired and passes the complete self-test before continuing.

Setting the AC Mains Line Voltage Selector and Fuse Installation

Warning

Before plugging the instrument into AC mains power, verify that the line voltage setting visible on the back of the AC mains input module is correct for the AC mains power source being connected. The line voltage selections are shown in a box on the rear panel immediately to the left of the AC mains input module. Other nominal line voltages are shown in parentheses.

Verify that the correct fuse is installed. To replace a blown fuse or verify the correct fuse,
pull it gently from the fuse drawer and insert the correct working fuse. Use only a 5x20 mm,
time-lag, 0.25 A, 250 V certified fuse. The Keysight part number is 2110-0817.

AC MAINS Nominal Line Voltage Range AC Mains Line Voltage Selector
100 - 115 100
120 - 127 120
202 - 230 220
240 240

Use the following procedure to configure the line voltage selector:

Step 1 Lift tab (1) and pull the fuse drawer (2) from the rear panel.
Step 2 Remove the line-voltage selector and rotate it so the correct voltage will appear in the fuse holder window.
Step 3

Verify that the correct fuse is installed. To replace a blown fuse or verify the correct fuse,
pull it gently from the fuse drawer and insert the correct working fuse. Use only a 5x20 mm,
time-lag, 0.25 A, 250 V certified fuse. The Keysight part number is 2110-0817.

Step 4 Replace the fuse holder assembly by sliding it into the rear panel.

Connect Power and I/O Cables

Connect the power cord and LAN, GPIB, or USB cable as desired. After you turn on the instrument (as described below), the instrument will run a power-on self test and then display a message about how to obtain help, along with the current IP address. It also displays the GPIB address (if applicable).

The instrument's default measurement function is DC Voltage (DCV), with autoranging enabled.

Power Switch

Press the power switch in the lower left corner of the front panel. If the instrument does not turn on, verify that the power cord is firmly connected and that the fuse is good and the line voltage selector is set correctly, as described above. Also make sure that the instrument is connected to an energized power source. If the LED below the power switch is off, there is no AC mains power connected. If the LED is amber, the instrument is in standby mode with AC mains power connected, and if it is green, the instrument is on.

In certain circumstances, the amber LED can come on even if the wrong line voltage is selected. In this case, the instrument may not power on.

If the power-on self test fails, the display shows Error in the upper right corner. It also displays a message describing the error. See the instrument's documentation for information on error codes and for instructions on returning the instrument for service.

To turn off the instrument, press and hold the power switch for about 500 ms. This prevents you from accidentally turning off the instrument by brushing against the power switch.

Crest Factor

Exceeding the crest factor limit may result in an inaccurate or lower reading display. Do not exceed the crest factor limit to avoid instrument damage and risk of electric shock. The crest factor limit is listed in the product data sheet at www.keysight.com/find/truevolt-doc.

Measurement Limits

To avoid instrument damage and the risk of electric shock, do not exceed any of the Measurement Limits defined in the following section.

Measuring AC Power Mains

The HI, LO, and current input terminals may be connected to AC mains power in IEC Category II installations for line voltages up to 300 VAC. To avoid the danger of electric shock, do not connect the inputs to AC mains power for line voltages above 300 VAC. See IEC Measurement Category II for further information.

IEC Measurement Category II

To protect against the danger of electric shock, the Keysight Truevolt Series DMM protects the user from AC mains power overvoltage events. When measuring AC mains, the HI and LO input terminals may be connected to AC mains power up to 300 VAC under Measurement Category II conditions as defined below.

IEC Measurement Category II includes electrical devices connected to AC mains power at an outlet on a branch circuit. Such devices include most small appliances, test equipment, and other devices that plug into a branch outlet or socket. The instrument may be used to make measurements with the HI and LO inputs connected to AC mains power in such devices, or to the branch outlet itself (up to 300 VAC). However, the instrument may not be used with its HI and LO inputs connected to AC mains power in permanently installed electrical devices such as the main circuit-breaker panel, sub-panel disconnect boxes, or permanently wired motors. Such devices and circuits are subject to overvoltages that may exceed the instrument’s protection capabilities.


Current Measurement Protection Fuse

For continued protection against fire, replace current-protection fuses only with fuses of the specified type and rating. The instrument must be disconnected from AC mains power, and all measurement terminals must be disconnected before changing the fuse.

Front/Rear Switch

Do not change the position of the Front/Rear switch on the front panel while signals are present on either the front or rear set of terminals. The switch is not intended as an active multiplexer. Switching while current or high voltage is present may cause instrument damage and lead to the risk of electric shock.

Measuring Current with A Current Transformer

If a current transformer is used for measuring current, you must use a current transformer with internal secondary protection. Using a current transformer without protection may result in a hazardous voltage resulting in a severe shock or death. In addition, this may cause damage to the instrument.

Measurement Limits

The Truevolt Series DMMs provide protection circuitry to prevent damage to the instrument and to protect against the danger of electric shock, provided the Measurement Limits are not exceeded. To ensure safe operation of the instrument, do not exceed the Measurement Limits shown on the front and rear panel, and defined as follows:

34460A Front Panel
Terminal Area

34461A, 34465A, 34470A
Front Panel
Terminal Area

34461A, 34465A, 34470A
Rear Panel
Terminal Area

For the 34461A, 34465A, and 34470A, the Front/Rear switch selects the terminal set to be used. DO NOT operate this switch while signals are present on the front or rear terminals.

The user-replaceable 3 A current-protection fuse is on the rear panel. There are 3 A and 10 A (34461A, 34465A and 34470A) current-protection fuses located inside the unit. Contact your Keysight Sales and Service Center or refer to product service documentation for replacement instructions.

To maintain protection, replace fuses only with fuses of the specified type and rating.

Input Terminal Measurement Limits

Measurement Limits are defined for the input terminals:

Main Input (HI and LO) Terminals. The HI and LO input terminals are used for voltage, resistance, frequency (period), capacitance, and diode test measurements. Two Measurement Limits are defined for these terminals:

As implied by the above limits, the Measurement Limit for the HI input terminal is a maximum of 1500 Vpk relative to ground when LO is at its maximum of 500 Vpk relative to ground.

Current Input Terminal. The current input ("I") terminal has a Measurement Limit of 3 A or 10 A (DC or AC) between the "I" terminal (3 A or 10 A) and the LO input terminal. Note that the current input terminals will always be at approximately the same voltage as the LO terminal, unless a current protection fuse is open. The 10 A terminal is not available on the 34460A.

Sense Terminal Measurement Limits

The HI and LO sense terminals are used for DCV ratio measurements and four-wire resistance and temperature measurements. The Measurement Limit is 200 Vpk for all of the terminal pairings: LO sense to LO input, HI sense to LO input, and HI sense to LO sense.

The 200 Vpk limit on the sense terminals is the Measurement Limit. Operational voltages in resistance measurements are much lower – up to ± 12 V in normal operation.

User Replaceable Parts

Replacement parts for the instrument are listed below.

Part Number Description
2110-0817 Line Fuse (250 mA, 250 V, time delay)
2110-1547 Current Protection Fuse (3.15 A, 500 V, time delay)

Voltages above 300 VAC may be measured only in circuits that are isolated from AC mains power. However, transient overvoltages are also present on circuits that are isolated from AC mains power. The instrument is designed to safely withstand occasional transient overvoltages up to 1500 Vpk when measuring voltages greater than 300 VAC. Do not use this equipment to measure circuits where transient overvoltages could exceed this level.