R 37XR Professional Digital Downloaded from www.Manualslib.
1 37XR RELREC P- P+ MAX MINAVG HOLD TTLCMOS AC+DC CFn F mHdBm % mVA Mk Hz RANGE 0 25 MIN MAX AVG SLEEP OFF 50 75 100 RANGE REL 2 HOLD PEAK 5 TTL CMOS cal >2sec LOGIC MADE IN TAIWAN PATENTS PENDING % Hz 3 mH metermantesttools.com H A V dBm mA V OFF 10A 6 TRUE RMS H mA CAT CAT 1000V 600V dBm % Hz V COM 10A 4 400mA MAX FUSED 10A MAX FUSED MAX 1000V 750V Downloaded from www.Manualslib.
7XR Digital Multimeter Safety Information .......................................................................................... 2 Symbols Used in this Manual ....................................................................... 2 Introduction.................................................................................................... 3 Making Measurements.................................................................................... 3 Verify Instrument Operation .........................
• • • • • • • • • Safety Information The 37XR Digital Multimeter is UL, CSA, 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 37XR is a true rms autoranging handheld digital multimeter for measuring or testing the following: • DC and AC voltage • Capacitance • DC and AC current • Diodes • Resistance • Continuity • Inductance • dBm • Frequency • Logic Levels, TTL or CMOS • Dutycycle Additional features include: MIN MAX AVG, HOLD, REL, PEAK±, 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
Measuring DC Voltage 1. 2. 3. 4. 5. See Figure -1- v Set the Function Switch to . 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 ( ) conditions. Measuring AC Voltage (True rms) o See Figure -2 - & -3- See Additional Features to find out the advantages of true rms. 1. Set the Function Switch to . 2.
5. 6. 7. 8. Open the test circuit (X) to establish measurement points. Connect the Test Probes in series with the load. Turn on power to the circuit being measured. Read the display, and, if necessary, correct any overload ( ) conditions. o Measuring Resistance See Figure -6- R Set the Function Switch to Ω . If is displayed, press the yellow button to display Ω. If RANGE is displayed, press the RANGE button to enable autoranging.
Measuring Inductance 1. 2. 3. 4. 5. 6. 7. See Figure -10- Set the Function Switch to mH or H. If RANGE is displayed, press the RANGE button to enable autoranging. Connect the Test Leads: Red to H mA, Black to COM Turn off power to the circuit being measured. Free at least one end of the inductor from the circuit. Connect the Test Probes across the inductor. Read the display. P Measuring Frequency 1. 2. 3. 4. 5. 6. See Figure -11- Set the Function Switch to Hz.
Additional Features Input Test Lead Warning The meter emits a continuous tone when a test lead is placed in the mA or 10A input jack and the Function/Range Switch is not set to a correct current position. (If the meter is connected to a voltage source with leads connected for current, very high current could result). All current ranges are protected by fast acting fuses. True-rms Measurements For ac measurements most DMMs average the ac input signal and display the result as an estimated rms value.
Beeper Off The beeper is an aural indicator to identify when the DMM is performing a function, making a range change, detecting a limit, and so on. To disable the beeper use the following procedure: 1. Set the Function Switch to OFF. 2. Press and hold the HOLD button while turning the Function Switch to the desired function. The no-beep symbol shows on the display. 3. Release the HOLD button. The Auto Power Off feature will remain disabled until the meter is turned off and then on.
Product Maintenance Cleaning To clean the meter, use a soft cloth moistened with water. To avoid damage to the plastic components do not use benzene, alcohol, acetone, ether, paint thinner, lacquer thinner, ketone or other solvents to clean the meter. Troubleshooting If the meter appears to operate improperly, check the following items first. 1. Review the operating instructions to ensure the meter is being used properly. 2. Inspect and test the continuity of the test leads. 3.
Non-Warranty Repairs and Replacement – US and Canada Non-warranty repairs in the United States and Canada should be sent to a Meterman Test Tools Service Center. Call Meterman Test Tools or inquire at your point of purchase for current repair and replacement rates. In USA In Canada Meterman Test Tools Meterman Test Tools th 1420 75 Street SW 400 Britannia Rd. E.
Specifications Approvals: General Specifications (Stated accuracy at 23 °C ±5 °C, <75 % relative humidity.) Display: 4 ¾ digit liquid crystal display (LCD) with a 41 segment analog bargraphic. Auto ranging: 9999 counts Manual ranging: 9999 counts Polarity: Automatic, positive implied, negative polarity indication. Overrange: (OL) or (-OL) 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.
Peak Hold accuracy: ±(3.0 % + 200 dgts) on 100V, 750V range 1000mV, 10V ranges unspecified Crest Factor: ≤ 3 Input impedance: 10 MΩ AC coupled true rms specified from 5% to 100% of range Overload protection: 1000 V dc or 750 V ac rms DC CURRENT Ranges: 100µA, 1000µA, 10mA, 100mA, 400mA, 10A (Auto/Manual ranging ) Resolution: 0.01 µA Accuracy: ±(0.5 % rdg +10 dgts) on 100µA range ±(0.5 % rdg + 5 dgt) on 1000µA to 400mA ranges ±(1.5 % rdg + 10 dgts) on 10A range Input protection: 0.
FREQUENCY Ranges: 100Hz, 1000Hz, 10kHz, 100kHz, 1000KHz, 10MHz, (Auto/Manual ranging ) Resolution: 0.01 Hz Accuracy: ±(0.1 % rdg + 5 dgts) Sensitivity: 3Hz to 1MHz: >1.5 V rms; 1MHz to 10MHz: >2 V rms, <5 V rms Minimum input range: 100Hz range > 3 Hz, 1000Hz range > 30 Hz Minimum pulse width: > 25 ns Duty cycle limits: > 30 % and < 70 % Overload protection: 1000 V dc or 750 V ac rms DUTY CYCLE Ranges: 0 to 90 % Resolution: 0.
1 V 4 5 2 1 3 2 V 5 6 2 3 1 4 Downloaded from www.Manualslib.
Input Waveform Signal d’entrØe Eingangsschwingungsform Forma d’onda d’ingresso Forma de onda de entrada Sine Wave Sinuso dale Sinusschwingung Onda sinusoidale Onda sinusoidal Full Wave, Sine Wave Onde complŁte, Sinuso dale Volle Schwingung, Sinusschwingung Onda sinusoidale, onda intera Onda completa, Onda sinusoidal Half-Wave, Sine Wave Demi-onde, sinuso dale Halbschwingung, Sinusschwingung Onda sinusoidale, semionda Media onda, onda sinusoidal Square Wave Onde carrØe Rechteckschwingung Onda quadra Onda cua
4 A 8 4 2 7 5 1 6 3 5 A 9 5 3 8 6 2 1 4 Downloaded from www.Manualslib.
6 8 6 5 3 2 7 1 4 7 6 2 1 4 3 5 7 Downloaded from www.Manualslib.
8 3 6 4 1 5 2 9 8 2 1 7 4 5 3 6 Downloaded from www.Manualslib.
10 7 2 6 1 4 3 5 11 6 5 3 2 1 4 Downloaded from www.Manualslib.
12 5 2 1 4 3 13 5 2 4 1 3 Downloaded from www.Manualslib.
14 5 6 2 4 1 3 15 (2) (2) Downloaded from www.Manualslib.
37XR U.S. Service Center Meterman Test Tools 1420 75th Street SW Everett, WA 98203 Tel: 800-993-5853 Fax: 425-446-6390 Downloaded from www.Manualslib.
