Simpson Electric 260 Series 6XLM Instruction Manual

Simpson 260® Series 6XLM

Volt-Ohm-Milliammeter

INSTRUCTION MANUAL

SIMPSON ELECTRIC COMPANY 520 Simpson Avenue

Lac du Flambeau, WI 54538-0099 [phone] FAX [phone]

Printed in U.S.A. Part No. 06-110935 Edition 14, 10/07

Visit us on the web at: www.simpsonelectric.com

About this Manual
To the best of our knowledge and at the time written, the information contained in
this document is technically correct and the procedures accurate and adequate to
operate this instrument in compliance with its original advertised specifications.

Notes and Safety Information

This Operator’s Manual contains warning headings which alert the user to check
for hazardous conditions. These appear throughout this manual where applicable,
and are defined below. To ensure the safety of operating performance of this in­strument, these instructions must be adhered to.
Warning, refer to accompanying documents.

Warning. Refer to accompanying documents

!

NOTES:

Caution, risk of electric shock.

!

This instrument is designed to prevent accidental shock to the operator when
properly used. However, no engineering design can render safe an instrument
whick is used carelessly. Therefore, this manual must be read carefully and com­pletely before making any measurements. Failure to follow directions can result in
ser ious or fatal accident.

Shock Hazard: As defined in American National Standard, C39.5, Safety
Requrements for Electrical and Electronic Measuring and Controlling Instrumen­tation, a shock hazard shall be considered to exist at any part involving a potential
in excess of 30 volts RMS (sine wave) or 42.4 volts DC or peak and where a
leakage current from that part to ground exceeds 0.5 milliampere, when mea­sured with anappropriate measuring instrument defined in Section 11.6.1 of ANSI

Technical Assistance

SIMPSON ELECTRIC COMPANY offers assistance Monday through Friday
8:00 am to 4:30 pm Central Time. To receive assistance contact Technical Sup­port or Customer Service at [phone].
Internet: http://www.simpsonelectric.com

Warranty and Returns

SIMPSON ELECTRIC COMPANY warrants each instrument and other articles
manufactured by it to be free from defects in material and workmanship under
normal use and service, its obligation under this warranty being limited to making
good at its factory or other article of equipment which shall within one (1) year
after delivery of such instrument or other article of equipment to the original pur­chaser be returned intact to it, or to one of its authorized service centers, with
transportation charges prepaid, and which its examination shall disclose to its
satisfaction to have been thus defective; this warranty being expressly in lieu of all
other warranties expressed or implied and of all other obligations or liabilities on
its part, and SIMPSON ELECTRIC COMPANY neither assumes nor authorizes
any other persons to assume for it any other liability in connection with the sales of
its products.

This warranty shall not apply to any instrument or other article of equipment which
shall have been repaired or altered outside the SIMPSON ELECTRIC COMPANY
factory or authorized service centers, nor which has been subject to misuse, neg­ligence or accident, incorrect wiring by others, or installation or use not in accord
with instructions furnished by the manufacturer.

®

260

is a Registered Trademark of the Simpson Electric Company.

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temperature and humidity extremes, vibration, mechanical shock, dust, cor­rosive fumes, or strong electrical or electromagnetic interfaces.

d. Verify Instrument accuracy by performing operational checks using known,

accurate, stable sources. If proper calibration equipment is unavailable, con­tact your nearest Simpson Authorized Service Center. If the Instrument has
not been used for 30 days, check the batteries for leakage and replace, if
necessary.

e. It is recommended that the Instrument be returned annually to an Authorized

Service Center or the factory for a complete overall check and calibration.

f. When not in use, store the Instrument in a location free from temperature

extremes, dust and corrosive fumes, and mechanical vibration or shock.

NOTES:

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Contents

I. INTRODUCTION .............................................................................. 7

1.1 General Description ................................................................................ 7

1.2 Test Leads ..............................................................................................7

1.3 Accessories and Supplies ...................................................................... 7

1.4 Technical Data ........................................................................................ 7

1.5 Definition of Accuracy ............................................................................. 9

1.6 Safety Considerations .......................................................................... 10

2. INSTALLATION ............................................................................... 10

2.1 Unpacking and Inspection .................................................................... 10

2.2 Shipping ................................................................................................ 10

2.3 Power Source Requirements ................................................................ 10

2.4 Operating Positions .............................................................................. 10

3. CONTROLS, CONNECTORS & INDICATORS ............................... 11

3.1 Front Panel ........................................................................................... 11

4. OPERATION ................................................................................... 12

4.1 Safety Precautions ............................................................................... 12

4.2 Adjust Pointer for Zero .......................................................................... 13

4.3 Polarity Correction ................................................................................ 13

4.4 DC Voltage Measurement ..................................................................... 13

4.4.1 Measuring DC Voltage: 0-250 mV .......................................................... 14

4.4.2 Measuring DC Voltage: 0-1 through 0-500V ........................................... 14

4.4.3 Measuring DC Voltage: 0-1000V ............................................................. 14

4.5 AC Voltage Measurement ..................................................................... 15

4.5.1 Measuring AC Voltage ............................................................................ 15

4.5.2 Measuring AC Voltage: 0-1000 V ............................................................ 16

4.6 Output Voltage Measurements ............................................................. 16

4.7 Measuring Decibels .............................................................................. 17

4.8 Direct Current Measurements .............................................................. 17

4.8.1 Measuring Direct Current: 0-50 µA ......................................................... 18

4.8.2 Measuring Direct Current: 0-0.5 through 0-500 mA ............................... 18

4.8.3 Measuring Direct Current: 0-5 µA ........................................................... 18

4.9 Resistance Measurement ..................................................................... 19

4.9.1 Measuring Resistance: Low Power Ohms Ranges................................. 19

4.9.2 Measuring Resistance: Conventional Ohms Ranges ............................. 19

5. OPERATING SERVICING............................................................... 20

5.1 Battery and Fuse Replacement ............................................................ 20

5.2 Case Removal ...................................................................................... 21

5.3 Fuse Protection .................................................................................... 21

5.4 Care ......................................................................................................21

and then gently push the + side of the battery into place.

b. To replace the 9V battery

1.withdraw old battery and mating connector from the compartment.

2. Remove the connector from the old battery and connect it to new battery.

3. Put the new battery into the compartment.

4. Place the connector leads so they rest between the cavity walls and clear
the fuse terminals. Place the extended leads between the battery holder and
top wall of the case.

1A or 2A fuse replacement is necessary when there is no meter deflection on any
of the DC VOLTS, AC VOLTS or OHMS ranges, but the DC AMPS range operates
properly.

c. To Replace the 1 Amp Fuse:

1. Pull the defective fuse from its retaining spring clips (fuse holder).

2. Snap in the replacement fuse and reinstall cover.

NOTE: A spare fuse is located in a cavity next to the fuse clip.

5.2 Case Removal

When maintenance other than battery and 1 ampere fuse replacement is required,
remove the Instrument from its case. Proceed as follows:
a. Place the Instrument face down on a soft padded surface.
b. Remove the battery and fuse compartment cover, located at the top rear of

the 260 case (paragraph 5.2). Unscrew the four screws located at the four
corners of the case.

c. Lift the case off the Instrument and set it aside. Maintenance now can be

performed on the Instrument.

5.3 Fuse Protection

A 1 Amp 250 Volt quick-acting and 2 Amp high voltage, high interruption capacity
fuse is connected in series with the input circuit an additional protection to the
VOM against excessive energy fault current, such as a power line overload.

It is important to replace the 1 Amp fuse with Littlefuse Type 312001 only to pre­vent the 2 Amp high interruption capacity fuse from opening on nominally high
overload.

If the Instrument fails to indicate, the 1 Amp or the 2 Amp fuses may be burned out.
(Refer to Paragraph 5.2 for fuse replacement.) A 1 Amp spare fuse is furnished
with each Instrument. (Both 1 Amp fuses are located in the battery and fuse com­partment.) The 2 Amp fuse is located on the instrument panel under the printed
circuit board.

5.4 Care

a. Immediately clean all spilled materials from the Instrument and wipe dry. If

necessary, moisten a cloth with soap and water to clean plastic surfaces.

b. When the Instrument is not in use, rotate the range selector switch to the

OFF/TRANSIT position.

c. Whenever possible, avoid exposure or usage in areas which are subject to

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