GW Instek GCM-407 User Manual
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GW Instek GCM-407 User Manual

GW Instek GCM-407 User Manual

600a digital clamp meter with true rms measurement
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Summary of Contents for GW Instek GCM-407

  • Page 2: Table Of Contents

    GCM-407 User Manual I. Overview - - - - - - - - - - - - - - - - - - - - - - - - - - 1 II. Open-case Inspection - - - - - - - - - - - - - - - - - 1 III.

  • Page 3: Overview

    If anything is missing or damaged, please contact your GW Instek distributor. If the instrument is not GCM-407 is a portable, true 6000 count, auto range used in an appropriate manner the safety protec- clamp ammeter with a simulation bar. Featuring a tions could be impaired.

  • Page 4: Electrical Symbols

    GCM-407 User Manual GCM-407 User Manual Do not use the clamp meter if the test lead 8. When the LCD display shows the icon, “ ”, it insulation is damaged, if the case insulation is indicates that the battery should be replaced to damaged, if the LCD is not functioning or if the ensure the measurement accuracy.

  • Page 5: External Construction

    GCM-407 User Manual GCM-407 User Manual V. External Construction (See Figure VI. LCD Display (See Figure 2) 1. Clamp head: A device used to measure AC current and convert current into voltage. 2. Clamp body: Designed to safely protect the operator from touching dangerous areas.

  • Page 6: Key Functions

    GCM-407 User Manual GCM-407 User Manual VII. Key Functions 5. FLASHLIGHT Long-press this key to turn the flashlight function 1. SELECT Tap the SELECT key to select measurement Press the this key to turn the flashlight function modes. off. 2. HOLD...

  • Page 7: Electrical Specifications

    GCM-407 User Manual GCM-407 User Manual Test Position Error: 3. Electrical Specifications An additional reading error of ±1.0% may occur Accuracy: ±(% of reading + digits) when the measured wired is not clamped into the Calibration interval: 1 year. center of the clamp head.
  • Page 8 GCM-407 User Manual GCM-407 User Manual Display: True RMS AC voltage; applicable for 6. Diode Test ( ranges from 10% to 100%. Voltage: Input impedance ≥ 10MΩ; Frequency response: 40~400Hz Open-circuit voltage is 3. DC Voltage ( approx. 3.3V, measurable PN forward bias ≤...

  • Page 9: Measurement Operating Instructions

    GCM-407 User Manual GCM-407 User Manual 8. NCV • The true RMS AC current meaurement accuracy is based on sinusoidual waveforms. For non-sinusoidal waveforms, adjust the accuracy as follows: Crest factor 1.4 ~ 2.0: additional ±1.0% Crest factor 2.0 ~ 2.5: additional ±2.5% IX.

  • Page 10: Ac Voltage Measurement

    GCM-407 User Manual GCM-407 User Manual 2. AC Voltage Measurement (see Figure 4) • The true RMS AC voltage meaurement accuracy 1) Insert the red test lead in the “V” input jack and is based on sinusoidual waveforms. For the black test lead in the “COM” input jack.

  • Page 11: Dc Voltage Measurement

    GCM-407 User Manual GCM-407 User Manual 3. DC Voltage Measurement (See Figure 5) 1) Insert the red test lead into the “V” input jack and the black test lead into the “COM” jack. 2) Rotate the function dial to the DC voltage measurement mode and connect the test leads in parallel to the load to be measured.

  • Page 12: Continuity Test

    GCM-407 User Manual GCM-407 User Manual • Before measuring in-circuit resistors, turn off the Note: power from the circuit and discharge any • When checking in-circuit open/short conditions capacitors for best measurement results. make sure power is turned off and all capacitors are discharged before measurement.

  • Page 13: Diode Measurement

    GCM-407 User Manual GCM-407 User Manual 6. Diode Measurement (See Figure 8) 1) Insert the red test lead into the “Ω” input jack and the black test lead into the “COM” input jack. The polarity of the red and black test lead is “+”...

  • Page 14: Non-Contact Ac Voltage Sensing Ncv

    GCM-407 User Manual GCM-407 User Manual Note: 8. Non-contact AC Voltage Sensing NCV (See • If the measured capacitance is shorted or the Figure 10) capacitance exceeds the maximum range of the In order to sense whether there is AC voltage or meter, the display will show “OL”.

  • Page 15: Power

    GCM-407 User Manual GCM-407 User Manual 9. Power (OFF) c. Only install batteries of the correct type and Turns the instrument off. rating. 10. Automatic Shutdown Function d. After installing the new batteries, re-install the If the function dial is not turned or a key is not battery cover.

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