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Summary of Contents for Simpson 260-8XPI
- Page 1 Simpson 260 ® Series 8XPI Volt-Ohm-Milliammeters Instruction Manual...
- Page 2 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, neg- ligence or accident, incorrect wiring by others, or installation or use not in accord with instructions furnished by the manufacturer.
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Page 3: Table Of Contents
Contents 1. INTRODUCTION ................5 General Description ................5 Overload Protection ................5 1.2.1Fuses ..................6 Internal Batteries ................6 Overload Circuit Test ................7 Printed Circuit ..................7 Adjust-A-Vue Handle ................7 Test Leads ..................7 Technical Data ..................7 Definition Of Accuracy ................ - Page 4 Contents Continued 3.15 Continuity Tests ................24 4. OPERATING SERVICING ..............24 Removing the Instrument Case ............24 Battery and Fuse Replacement ............25 Fuse Protection ................25 Care ....................26...
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Page 5: Introduction
INTRODUCTION General Description The Simpson Volt-Ohm-Milliammeter 260 Series 8XPI, (hereafter referred to as the 260 or the Instrument) is a rugged, accurate, compact, easy-to-use instrument equipped with mirrored dial to eliminate parallax. The Instrument can be used to make accurate measurements of AC and DC voltage, direct current, resistance, decibels, and Output Voltage. -
Page 6: 1Fuses
The 1 and 2 Amp fuses in the input circuit add protection to the relay contacts. Some overload conditions may cause the fuses to burn out as well as open the relay contacts. When an overload of sufficient magnitude is applied to the VOM, the reset button will “pop up”... -
Page 7: Overload Circuit Test
Overload Circuit Test Set the range switch to R X 10,000 POSITION and the function switch to -DC POSITION. Plug the black test lead into the -COMMON jack terminal and touch the other end of the test lead to the +10 A input terminal. (The relay reset button should rise, indicating that the overload circuit is in working condition.) NOTE: No damage will occur to the Instument as a result of this test. - Page 8 OUTPUT VOLTAGE: (AC): Ranges: 0-2.5-10-25-50-250 (limited to 350 VDC) DC MICROAMPERES: Range: 0-50μA Voltage Drop: 250mV DC MILLIAMPERES: Ranges: 0-1-10-100-500 mA Voltage Drop (Approx.): 250 mV, 255 mV, 300 mV, 500 mV DC AMPERES: Range: 0-10A Voltage Drop (Approx.): 255 mV NOTE: The 10A range is not internally fused.
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Page 9: Definition Of Accuracy
16. ***RATED CIRCUIT-TO -GROUND VOLTAGE: 1000V AC/DC Max. Accuracies specified are for the 260 in a horizontal position. Responds to the average value of an AC current, and is calibrated to indicate the RMS value of a pure sine wave. *** Per ANSI C39.5 April 1974: “The specified voltage with respect to ground, which may be safely and continuously applied to the circuit of an Instrument.”... -
Page 10: Additional Accessories
Model 150-2 Amp-Clamp ............... 00541 1.13.1 Amp-Clamp Model 150-2 The Simpson Amp-Clamp Model 150-2 allows AC current measurements without breaking the circuit under test. The Amp-Clamp works in effect as a transformer containing a split core for accommodating the conductor which carries the current being measured. -
Page 11: Installation
Warranty The Simpson Electric Company warranty policy is printed on the inside front cover of this manual. Read it carefully before requesting any warranty repairs. For LL assistance, contact the nearest Authorized Service Center or the factory directly. -
Page 12: Operation
OPERATION This section of the manual contains information required to use and operate the 260-8 in a safe and proper manner. Multifunction instruments (VOM’s) such as the 260-8 are intended as general pur- pose measuring Instruments for use in low power circuitry such as found in con- sumer appliances, TV and radio receivers, and in general laboratory applications. -
Page 13: Operational Items And Features
energized. A mistake could damage the instrument and cause personal in- jury. Locate all voltage sources and accessible current paths before making con- nections to circuitry. Make certain that the equipment being worked upon is properly grounded and fuses are of the proper type and rating. Double check switch positions and jack connections before applying power to the Instrument. - Page 14 Figure 3-1. Operational Items and Features Circuit Jacks: There are eight jacks on the front panel marked with the functions they represent. These jacks pro- vide the electrical connections to the test leads. The COMMON (-) jack is used (in conjunction with the black test lead) as the reference point for the measurement of all the functions with the excep- tion of the 10A range.
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Page 15: Polarity Reversing
Polarity Reversing The function switch provides a convenient means to reverse polarity of the internal battery to facilitate testing semiconductor devices. The +DC and -DC positions transpose internal connections to the COMMON and +jacks and therefore can also be used to reverse polarity of external voltages and currents connected to these jacks (only). -
Page 16: Dc Voltage Measurement 0-2.5 Through 0-250V Range
3.7.2 DC Voltage Measurement 0-2.5 Through 0-250V Range Set the function switch at +DC. Plug the black test lead into the -COMMON jack and the red test lead into the +jack. Set the range switch at one of the five voltage range positions marked 2.5V, 10V, 25V, 50V or 250V. -
Page 17: Dc Voltage Measurement 0-1000V Range
3.7.4 DC Voltage Measurement 0-1000V Range Use extreme care when working with high voltage circuits. Do not touch the In- strument or test leads while power is on in the circuit being measured. Before proceeding with the following steps, review the Safety Precautions in Para- graph 3.2. -
Page 18: Ac Voltage Measurement 0-500V Range
more accurate reading.) Plug the black test lead into the –COMMON jack and the red test lead into the +jack. Turn off power to the cir- cuit to be measured and discharge any capaci- tors. Connect the test leads across the circuit voltage to be measured with the black lead... -
Page 19: Ac Voltage Measurement 0-1000V Range
Turn on the power in the circuit being measured. Read the voltage on the red scale marked AC. Use the 0-50 figures and multiply by 10. 3.8.3 AC Voltage Measurement 0-1000V Range Use extreme care when working in high voltage circuits. Do not handle the Instru- ment or test leads while the circuit being measured is energized. -
Page 20: Decibel Measurement (-20 To +50 Db)
Before proceeding with the fol- lowing steps, review the Safety OUTPUT RANGES Precautions in Paragraph 3.2. 2.5 VAC RANGE 10VAC RANGE Set the function switch to 25/50 VAC RANGE AC Volts only position. 250 VAC RANGE Plug the black test lead into the -COMMON jack and the red test lead into the OUTPUT jack. -
Page 21: Direct Current Measurement
NOTE: The maximum voltage ratio that can be measured is +50 dB on the 0-250V range. If dB measurements are being made to a 0.006 watt into 500 reference level, subtract +7 dB from the reading obtained on the 260. 3.11 Direct Current Measurement Do not change the range setting of the range or function switches while the circuit is energized. -
Page 22: Direct Current Measurement 0-10A Range
Turn the power off and disconnect the test leads. This range is only intended for measurements in low voltage circuits (under 25 V DC) such as the primary power in vehicles or their accessories. 3.11.3 Direct Current Measurement 0-10A Range Plug the black test lead into the -10A jack and the red test lead into the +10A jack. -
Page 23: Measuring Resistance
3.13 Measuring Resistance Voltage applied to a resistance range will cause reading errors if low and damage the Instrument if high. When making in-circuit measurements, make certain that the circuit is completely de-energized before making connections to it. When making in-circuit measurements, circuit paths in parallel with the resistance being measured may cause reading errors. -
Page 24: Continuity Tests
precautions are normally required. If the semiconductor material is germanium, check the ratings of the device and refer to Table 1-1, item 8, Section 1. NOTE: The resistance of diodes will measure differently from one resistance range to another on the VOM with the function switch in a given position. For example, a diode which measures 80 ohms on the R X 1 range may measure 300 ohms on the R X 100 range. -
Page 25: Battery And Fuse Replacement
Battery and Fuse Replacement The batteries and 1 Amp fuse are located inside an isolated compartment at the top-rear of the Instrument case. To open the battery and fuse compartment: Place the Instrument face down on a soft padded surface. Unscrew the single screw on the cover. -
Page 26: Care
Care Do not attempt to clean this Instrument with the test leads connected to a power source. Immediately clean all spilled materials from the Instrument and wipe dry. If the spillage is corrosive, use a suitable cleaner to neutralize the corrosive action. - Page 27 NOTES:...
- Page 28 SIMPSON ELECTRIC COMPANY 520 Simpson Avenue Lac du Flambeau, WI 54538-0099 (715) 588-3311 FAX (715) 588-3326 Printed in U.S.A. Part No. 06-115022 Edition 9, 07/17 Visit us on the web at: www.simpsonelectric.com...
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