TEMPO COMMUNICATIONS MM200 Digital Multimeter Instruction Manual

TEMPO COMMUNICATIONS MM200 Digital Multimeter

• Read and understand all of the instructions and safety information in this manual before operating or servicing this tool.

Description

The Tempo MM200 Digital Multimeter is a hand-held testing device with the following measurement capabilities: AC and DC voltage, AC and DC current, frequency, and resistance. They also check diodes and verify continuity. Other specialized capabilities and functions common to all meters include:

• Backlit LCD for reading in dim conditions.
• Beep-Jack™ audible warning alerts the user with a beep and an error message on the LCD if the test lead is plugged into the mA/μA or A input terminal while the selector switch is not in  the mA/μA or A position.
• Non-contact and single-probe voltage detection capability.
• Bar graph display, which responds more quickly than the numeric display — is useful for detecting faulty contacts, potentiometer clicks, and signal spikes.
• Relative zero mode.
• Data hold mode.
• Selectable automatic power off.

Safety

Safety is essential in the use and maintenance of Tempo tools and equipment. This instruction manual and any markings on the tool provide information for avoiding hazards and unsafe practices related to the use of this tool. Observe all of the safety information provided.

Purpose of This Manual
This instruction manual is intended to familiarize all personnel with the safe operation and maintenance procedures for the Tempo MM200 Digital Multimeter. Keep this manual available to all personnel. Replacement manuals are available upon request at no charge at www.TempoCom.com.

• Do not discard this product or throw it away! For recycling information, go to www.TempoCom.com.

Important Safety Information

SAFETY ALERT SYMBOL
This symbol is used to call your attention to hazards or unsafe practices that could result in injury or property damage. The signal word, defined below, indicates the severity of the hazard. The message after the signal word provides information for preventing or avoiding the hazard.

DANGER

• Immediate hazards which, if not avoided, WILL result in severe injury or death.
• Hazards which, if not avoided, COULD result in severe injury or death.

WARNING

• Hazards or unsafe practices which, if not avoided, MAY result in injury or property damage.
• Read and understand this material before operating or servicing this equipment. Failure to understand how to safely operate this tool could result in an accident causing serious injury or death.
• Electric shock hazard: Contact with live circuits could result in severe injury or death.

All specifications are nominal and may change as design improvements occur. Tempo Communications Inc. shall not be liable for damages resulting from misapplication or misuse of its products. Beep-Jack is a trademark of BTC.

KEEP THIS MANUAL

WARNING

Electric shock hazard:

• Do not expose this unit to rain or moisture.
• Do not use this unit if it is wet or damaged.
• Only use the test leads provided with the equipment or the listed Probe Assembly with the same rating or better.
• Inspect the test leads or accessories before use. They must be clean and dry, and the insulation must be in good condition. Do not use the test lead if the contrasting inner layer of insulation is visible.
• Use this unit for the manufacturer’s intended purpose only, as described in this manual. Any other use can impair the protection provided by the unit.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:

• Do not apply more than the rated voltage between any two input terminals or between any input terminal and earth ground.
• Do not contact the test lead tips or any uninsulated portion of the accessory. Failure to observe these precautions may result in injury and can damage the instrument.

Electric shock hazard:

• Do not operate with the case open.
• Before opening the case, remove the test leads from the circuit and shut off the unit. Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:
The fuses are an integral part of the overvoltage protection. When fuse replacement is necessary, refer to “Specifications” for the correct type, size, and capacity. Using any other type of fuse will void the overvoltage protection rating of the unit. Failure to observe this warning could result in severe injury or death.

Electric shock hazard:

• Unless measuring voltage, current, or frequency, shut off and lock out power. Make sure that all capacitors are discharged. Voltage must not be present.
• Set the selector and connect the test leads so that they correspond to the intended measurement. Incorrect settings or connections can result in a blown fuse.
• Using this unit near equipment that generates electromagnetic interference can result in unstable or inaccurate readings. Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:
Do not change the measurement function while the test leads are connected to a component or circuit. Failure to observe this precaution may result in injury and can damage the unit.

Electric shock hazard:
Do not use the tester to measure voltages in circuits that could be damaged or activated by the AutoCheck™ mode’s low input impedance (approximately 3.0 kΩ and 150 pF). Failure to observe this precaution may result in injury and can damage the unit.

Electric shock hazard:

• Do not attempt to repair this unit. It contains no user-serviceable parts.
• Do not expose the unit to extremes in temperature or high humidity. Refer to “Specifications.” Failure to observe these precautions may result in injury and can damage the unit.

Identification

1. Display
   

   • 4-digit LCD (maximum reading is 5999) and bar graph.

2. Feature buttons

   • Refer to explanations in the “Using the Features” section.

3. Selector
   

   • Selects a function or turns power OFF.

4. ΩV
   

   • Positive input terminal for all measurements except current.

5. COM

   • Negative, common, or ground input terminal for all measurements.

6. A
   

   • Positive input terminal for high current measurements.

7. mA µA

   • Positive input terminal for low current measurements.

Display Icons

Using the Features

All Models

• SELECT: Press momentarily to toggle between functions.

• Press and hold until backlight illuminates. Press and hold again to turn off. The backlight automatically turns off after approximately 30 seconds to extend battery life.

• RANGE: Press once to enter the manual ranging mode. The icon will disappear from the display. Press repeatedly to step through the ranges. Press and hold to return to the automatic ranging mode.
  Note: When using MAX/MIN, HOLD, or Δ mode, pressing RANGE will cause the meter to exit that mode.

• REL: Finds the difference between two measurements. While taking a measurement, press REL to set the display to zero. The Δ icon will appear on the display. Take the second measurement. The value on the display will be the difference between the two measurements. Press again to exit this mode.

• Hz: Press and hold until the meter beeps to enable frequency measurement. The frequency function can be used with the selector in any voltage or current setting. Use the V or A settings for measuring the frequency of sinusoidal waveforms. Use the mV setting for measuring the frequency of 3-volt or 5-volt logic level, square waveform signals. The sensitivity of the frequency measurement function varies with the measurement range. To automatically select a sensitivity level, measure the voltage or current first, and then press Hz. If the reading becomes unstable or reads zero, press the RANGE button to select a different sensitivity level.
  The number of bar graph elements indicates the sensitivity selected:

  • 1 element = 6 V, 6 A, 60 mA, or 600 μA
  • 2 elements = 60 V, 10 A, 600 mA, or 6000 μA
  • 3 elements = 600 V
  • 4 elements = 1000 V
  • HOLD : Press momentarily to hold the present value on the display. Press again to exit this mode.
    This feature does not affect the bar graph.

• EF: Set the meter to any current or voltage function. Press and hold until the meter beeps to detect the electric field that surrounds current-carrying conductors. Signal strength is displayed as a series of dashes on the display.

• Use the tester’s built-in antenna (located along the top, near the LCD) for tracing live circuits or locating a break in a wire.

• For more precision, such as distinguishing between current-carrying and ground wires, connect a test lead to the ΩV input terminal and use it as a probe for direct contact verification of AC voltage.

• Automatic Power Off: To extend battery life, the meter will shut itself off after approximately 30 minutes of inactivity. To restore power, press either the SELECT, CREST, or REC button or turn the selector to OFF and then back on. To disable this feature, press SELECT while turning the meter on.

Using the Features (cont’d)

• Disabling the Beeper: Hold down the RANGE button while turning the meter on to temporarily disable the beeper feature. Turn the selector to OFF and then back on to enable the beeper.

AC Measurement

AC measurements are usually displayed as RMS (root mean square) values. The RMS value is equal to the value of a DC waveform, which would deliver the same power if it replaced the time-varying waveform. Two AC measurement methods are average-responding RMS calibrated and true RMS-reading.The average-responding RMS calibrated method takes the average value of the input signal after full wave rectification, multiplies it by 1.11, and displays the result. This method is accurate if the input signal is a pure sine wave. The MM200 is an average-responding meter.

Waveforms and Crest Factors

• The crest factor is the ratio of the peak value to the RMS value; it is represented by the Greek letter .

Operation

WARNING

Electric shock hazard: Contact with live circuits could result in severe injury or death.

1. Refer to the Settings Table. Set the selector to the proper setting, press SELECT (when instructed to do so), and connect the test leads to the meter.
2. Refer to “Typical Measurements” for specific measurement instructions.
3. Test the unit on a known functioning circuit or component.
   • If the unit does not function as expected on a known functioning circuit, replace the battery and/or fuses.
   • If the unit still does not function as expected, call Tempo for technical assistance at 800-642-2155, Option 2.
4.  Take the reading from the circuit or component to be tested.

Settings Table

• This table continues on the next page.

Settings Table (cont’d)

• Tone indicates continuity. The threshold is between 10 Ω and 80 Ω.
• Press SELECT for AC or DC, as required.
• Logic level frequency has a fixed sensitivity and is for digital signals. Refer to “Accuracy”.
• Refer to the “Using the Features” section for an explanation of EF (electric field detection).
• Discharge the capacitor before measurement. Discharge a large capacitor through an appropriate resistive load.

Typical Measurements

Voltage Measurement

Current Measurement

Electric Field Detection (EF)

Accuracy
Refer to the “Specifications” section for operating conditions and temperature coefficient. Accuracy is specified as follows: ± (a percentage of the reading

• a fixed amount) at 23 °C ± 5 °C (73.4 °F ± 9 °F), 0% to 75% relative humidity.

All Models

AC Voltage

Range

(50 Hz to 400 Hz)

| Accuracy
---|---
60.00 mV| ± (1.0% + 0.05 mV)
600.0 mV| ± (1.0% + 0.5 mV)
6.000 V| ± (1.0% + 0.005 V)
60.00 V| ± (1.0% + 0.05 V)
600.0 V| ± (1.0% + 0.5 V)
1000 V| ± (1.0% + 5 V)

• Input Impedance: 10 MΩ // 50 pF

DC Voltage

• Input Impedance: 10 MΩ // 50 pF

Resistance

• Open Circuit Voltage: 0.45 VDC typical

Diode Test

• Measuring Range: 1.000 V
• Test Current (typical): 0.56 mA
• Open Circuit Voltage: < 1.8 VDC
• Accuracy: ± (1.0% + 0.003 V)

Continuity

• Tone Threshold: Between 10 Ω and 80 Ω
• Response Time: < 32 ms

AC Current

• 8 A continuous, > 8 A to 15 A for 30 second max with 5 minutes cool down interval

DC Current

• 10A continuous, > 10A to 20A for 30 second max with 5 minutes cool down interval

Frequency—Hz (Line) at ACV, DCV, Current, AutoCheck™ Mode

Accuracy of Frequency Ranges

Frequency—Logic Level Hz (mV Function)

3 V peak

6.55 Hz to 65.53 Hz| ± (0.03% + 0.02 Hz)
65.5 Hz to 655.3 Hz| ± (0.03% + 0.2 Hz)
0.655 kHz to 6.553 kHz| ± (0.03% + 0.002 kHz)
6.55 kHz to 65.53 kHz| ± (0.03% + 0.02 kHz)
65.5 kHz to 500.0 kHz| ± (0.03% + 0.2 kHz)
500.0 kHz to 655.3 kHz| ± (0.03% + 0.2 kHz)| 5 V peak
0.655 MHz to 1.000 MHz| ± (0.03% + 0.002 MHz)

Non-contact Electric Field Detection (EF)

50 Hz to 60 Hz

23 V to 83 V| – –
59 V to 165 V| – – –
124 V to 330 V| – – – –
250 V to 1000 V| – – – – –

• Bar graph indication and tone are proportional to signal strength

Specifications

• Display: LCD (6000) and 24-segment bar graph
• Polarity: Automatic
• Sampling Rate:
  • Numeric Display: 5 per second
  • Bar Graph Display: 40 per second
  • Temperature Coefficient: Nominal 0.15 x (specified accuracy) per °C below 18 °C or above 28 °C
  • Automatic Power Off: After 34 minutes of inactivity.

To disable this feature, press SELECT while turning the meter on.

Specifications (Cont.)

Noise Rejection:

• Normal Mode Rejection Ratio > 60 dB at 50 Hz and 60 Hz when measuring DCV
• Common Mode Rejection Ratio > 60 dB from 0 Hz to 60 Hz when measuring ACV
• Common Mode Rejection Ratio > 100 dB at 0 Hz, 50 Hz and 60 Hz when measuring DCV

Operating Conditions:

• Temperature: 0 °C to 40 °C (32 °F to 104 °F)
• Relative Humidity (non-condensing): 80% maximum for temperatures up to 31 °C (88 °F), decreasing linearly to 50% maximum at 40 °C (104 °F)
• Altitude: 2000 m (6500′) maximum

Indoor use only

• Pollution Degree: 2

Storage Conditions

• Temperature: –20 °C to 60 °C (–4 °F to 140 °F) Relative Humidity (non-condensing): 0% to 80% Remove battery.
• Battery: Two 1.5 V batteries (AAA, NEDA 24A or IEC LR03)
• Safety: Double insulation per IEC/UL EN61010-1 Ed. 3.0, IEC/EN61010-2-030 Ed. 1.0, IEC/ EN61010-2-033 Ed. 1.0, IEC/UL/EN61010-031 Ed. 1.1 and CAN/CSA-C22.2 No. 61010-1-12 Ed. 3.0 to CAT III 600V and CAT IV 300V AC & DC Transient Protection: 6.5KV (1.2/50μs surge)

Overload Protections:
μA and mA: 0.4A/1000V DC/AC rms, IR 30KA@ 1000V DC/AC rms; Dimensions: 6 x 32 mm A: 11A/1000V DC/AC rms, IR 20KA@ 1000V DC/AC rms; Dimensions: 10 x 38mm V & AutoCheckTM: 1100V DC/AC rms mV, Ohm & others: 1000V DC/AC rms

Overvoltage Categories
Terminals (to COM) Measurement Category: V/mAμA / A: CAT III 600V and CAT IV 300V AC & DC. E.M.C: Meets EN61326-1:2013 (EN55022, EN61000-3-2, EN61000-3-3, EN61000-4-2, EN61000- 4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, EN61000-4-8, EN61000-4-11)

• Noise rejection is the ability to reject unwanted signals or noise.
  • Normal mode voltages are AC signals that can cause inaccurate DC measurements. NMRR (Normal Mode Rejection Ratio) is a measure of the ability to filter out these signals.
  • Common mode voltages are signals present at the COM and + input terminals, with respect to ground, that can cause digit rattle or offset in voltage measurements. CMRR (Common Mode Rejection Ratio) is a measure of the ability to filter out these signals.

Measurement Categories

These definitions were derived from the international safety standard for insulation coordination as it applies to measurement, control, and laboratory equipment. These measurement categories are explained in more detail by the International Electrotechnical Commission; refer to either of their publications: IEC 61010-1 or IEC 60664.

Measurement Category I
Signal level. Electronic and telecommunication equipment, or parts thereof. Some examples include transient-protected electronic circuits inside photocopiers and modems.

Measurement Category II
Local level. Appliances, portable equipment, and the circuits they are plugged into. Some examples include light fixtures, televisions, and long branch circuits.

Measurement Category III
Distribution level. Permanently installed machines and the circuits they are hard-wired to. Some examples include conveyor systems and the main circuit breaker panels of a building’s electrical system.

Measurement Category IV
Primary supply level. Overhead lines and other cable systems. Some examples include cables, meters, transformers, and other exterior equipment owned by the power utility.

Statement of Conformity
Tempo Communications Inc. is certified in accordance with ISO 9001 (2015) for our Quality Management Systems. The instrument enclosed has been checked and/or calibrated using equipment that is traceable to the National Institute for Standards and Technology (NIST).

Maintenance

Warning

• Electric shock hazard: Before opening the case, remove the test leads from the circuit and shut off the unit. Failure to observe these warnings could result in severe injury or death.
• Electric shock hazard: The fuses are an integral part of the overvoltage protection. When fuse replacement is necessary, refer to “Specifications” for the correct type, size, and capacity. Using any other type of fuse will void the overvoltage protection rating of the unit. Failure to observe this warning could result in severe injury or death.

Replacing the Battery and Fuses

1. Disconnect the unit from the circuit. Turn the unit OFF.
2. Remove the rubber boot.
3. Remove the screw from the back cover.
4. Remove the back cover.
5. Replace batteries (observe polarity) and/or fuse(s).
6. Replace the cover, screw, and rubber boot.

Cleaning
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents.

Limited Warranty

Tempo Communications Inc. warrants to the original purchaser of these goods for use that these products will be free from defects in workmanship and material for one year, except for normal wear and abuse. For all Test instrument repairs, you must first request a Return Authorization Number by contacting our Customer Service department at: toll-free in the US and Canada 800-642-2155Telephone +1 760 510-0558 • Facsimile +1 760 598-9263. This number must be clearly marked on the shipping label. Ship units Freight Prepaid to Tempo Repair Center, 1390 Aspen Way, Vista, CA 92081 USA. Mark all packages: Attention: TEST INSTRUMENT REPAIR. For items not covered under warranty (such as dropped, abused, etc.) repair cost quote is available upon request.

Note: Prior to returning any test instrument, please check to make sure the batteries are fully charged.

Tempo Communications
1390 Aspen Way • Vista, CA 92081 • USA 800-642-2155 Tempo Europe Ltd. • Brecon House, William Brown Close Cwmbran, NP44 3AB, UK • Tel: +44 1633 927 050 www.TempoCom.com

References

• Professional. Nothing Less.™ | Greenlee
• Tempo Communications – Industry-leading Test and Measurement Solutions

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