34XR-A Professional Digital Multimeter Users Manual 99 Washington Street Melrose, MA 02176 Fax 781-665-0780 TestEquipmentDepot.
34XR-A 1 5 2 MADE IN TAIWAN PATENTS PENDING www.amprobe.
4XR-A Digital Multimeter Safety Information ...........................................................................................2 Introduction .....................................................................................................3 Making Measurements.....................................................................................3 Verify Instrument Operation..........................................................................3 Range Selection .................................
• • • • • • • • Safety Information The 34XR-A Digital Multimeter is UL, cUL, and EN61010-1 certified for Installation Category III – 600V and Category II – 1000V. It is recommended for use with local level power distribution, appliances, portable equipment, etc, where only smaller transient overvoltages may occur, and not for primary supply lines, overhead lines and cable systems. Do not exceed the maximum overload limits per function (see specifications) nor the limits marked on the instrument itself.
Introduction The 34XR-A is a True rms autoranging handheld digital multimeter for measuring or testing the following: • DC and AC voltage • Temperature • DC and AC current • Capacitance • Resistance • Diodes • Frequency • Continuity • Dutycycle Additional features include: MIN MAX, HOLD, Backlight, and Range Lock Making Measurements Verify Instrument Operation Before attempting to make a measurement, verify that the instrument is operational and the battery is good.
Measuring AC Voltage (True rms) See Figures -2- & -3- See Additional Features to find out the advantages of true rms. 1. 2. 3. 4. 5. Set the Function Switch to V. If RANGE is displayed, press the RANGE button to enable autoranging. Connect the Test Leads: Red to E, Black to COM Connect the Test Probes to the circuit test points Read the display, and, if necessary, correct any overload (o) conditions. Preparing for Current Measurements • • • • • Turn off circuit power before connecting the test probes.
Measuring Resistance See Figure -6- Set the Function Switch to Ω. If RANGE is displayed, press the RANGE button to enable autoranging. Connect the Test Leads: Red to E, Black to COM Turn off power to the circuit being measured. Never measure resistance across a voltage source or on a powered circuit. 5. Discharge any capacitors that may influence the reading. 6. Connect the Test Probes across the resistance. 7. Read the display.
Measuring Frequency 1. 2. 3. 4. See Figure -11- Set the Function Switch to Hz. Connect the Test Leads: Red to Hz, Black to COM Connect the Test Probes to the signal source. Read the display. The Meter will autorange for the best resolution. Measuring Dutycycle 1. 2. 3. 4. See Figure -12- Set the Function Switch to %. Connect the Test Leads: Red to %, Black to COM Connect the Test Probes to the signal source. Read the display. The Meter will autorange for the best resolution.
Auto Power Off Auto Power Off is a battery saving feature that puts the meter into a sleep mode if the Function/Range Switch has not changed position in the last 30 minutes. To wake the meter turn it off and then on. The Auto Power Off feature can be disabled to keep the meter from going to sleep. This feature is useful when using the MIN MAX mode for extended periods. To disable the Auto Power Off feature use the following procedure: 1. Set the Function Switch to OFF. 2.
Specifications General Specifications Display: 3 ¾ digit liquid crystal display (LCD)(3999 count) with a 41-segment analog bar-graph. Polarity: Automatic, positive implied, negative polarity indication. Overrange: (0o) or (-0o) is displayed. Zero: Automatic. Low battery indication: The B is displayed when the battery voltage drops below the operating level. Auto power off: Approx. 30 minutes. Measurement rate: 2 times per second, nominal. Operating environment: 0 °C to 50 °C at <70 % R.H.
Approvals: > LISTED 950Z P Safety: Conforms to UL1244; EN61010-1: Cat II - 1000V / Cat III - 600V; Class 2, Pollution degree II. EMC: Conforms to EN61326-1, criteria B This product complies with requirements of the following European Community Directives: 89/ 336/ EEC (Electromagnetic Compatibility) and 73/ 23/ EEC (Low Voltage) as amended by 93/ 68/ EEC (CE Marking). However, electrical noise or intense electromagnetic fields in the vicinity of the equipment may disturb the measurement circuit.
RESISTANCE DUTY CYCLE Ranges: 400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ, 40MΩ Resolution: 100 mΩ Accuracy: ±(1.0 % rdg + 4 dgts) on 400Ω to 4MΩ ranges ±(2.0 % rdg + 5 dgts) on 40MΩ range Open circuit volts: -0.45 V dc typical, (-1.2 V dc on 400Ω range) Overload protection: 1000 V dc or 750 V ac rms Ranges: 0 to 90 % Resolution: 0.1 % Pulse widh: >10 µs Frequency range: 40 Hz to 20 kHz Accuracy: (5V logic ) ±(2.
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Input Waveform Signal d'entrée Eingangsschwingungsform Forma d'onda d'ingresso Forma de onda de entrada Sine Wave Sinusoïdale Sinusschwingung Onda sinusoidale Onda sinusoidal Full Wave, Sine Wave Onde complète, Sinusoïdale Volle Schwingung, Sinusschwingung Onda sinusoidale, onda intera Onda completa, Onda sinusoidal Half-Wave, Sine Wave Demi-onde, sinusoïdale Halbschwingung, Sinusschwingung Onda sinusoidale, semionda Media onda, onda sinusoidal Square Wave Onde carrée Rechteckschwingung Onda quadra Onda cua
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6 7 34XR-A 5 4 2 6 1 3 ( ) ( ) 7 34XR-A 5 1 3 2 ( ) ( ) 4 6 15
8 3 6 34XR-A 4 1 5 2 ( ) ( ) 9 7 34XR-A 1 6 3 ( ) ( ) 4 2 5 16
10 5 4 34XR-A 1 2 K 3 ( ) ( ) 11 4 3 34XR-A 1 2 ( ) ( ) 17
12 4 34XR-A 1 2 ( ) 3 ( ) 13 (2) (2) 18 (4)
