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Specifications

Impedance

Range

0.001 – 1.999 Ohms

Automatic auto-zero for test leads

EMI (noise on ground)

Bandwidth

9kHz – 450MHz

Measurement Range

80 dBuV – 140 dBuV

10 mV – 10 RMS

Measurement Type

Average

Envelope Peak

Voltage on Ground

AC (50 – 500 Hz)

0.001 – 270 V RMS

0.001 – 400 V

Reference

Individual reference setting for each parameter

Hold

Hold, Hold Max

General

Power

Battery 9V Alkaline

Dimensions (approx.)

4.5” x 3.6” x 1.1”

114 mm x 92 mm x 28 mm

All specifications are subject to change without notice.

is active. Please note that if you power down the 3M

™

Ground Pro Ground Integrity

Meter while in any of these modes, it will remain in the same mode when the unit is
powered up again.

Pressing the Hold button one more time puts the Ground Pro back into regular mode.

Содержание CTM051

Страница 1: ...3M Ground Pro Ground Integrity Meter Model CTM051 User s Guide ...

Страница 2: ... instructions for future reference EXPLANATION OF SIGNAL WORD CONSEQUENCES WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury and or property damage CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury and or property damage NOTICE Indicates a potentially hazardous situation whi...

Страница 3: ...and 2 this device must accept any interference received including interference that may cause undesired operation Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment T...

Страница 4: ...nctionality problems such as tool lockups erratic behavior and parametric errors Controls and Indicators Turns the power on and off Hold for a few seconds to turn the unit off Also resets some parameters Switches the unit into impedance measurement mode Switches the unit into high frequency noise EMI measurement mode Switches the unit into AC and DC voltage measurement mode Sets up the reference f...

Страница 5: ...f your 3M Ground Pro Ground Integrity Meter Please refer to the rest of this User s Guide for detailed explanations of each control indicator and connection Display Banana Jacks Keypad Battery Compartment on the back ...

Страница 6: ...Such interference causes problems with the operation of equipment The Ground Pro also measures AC and DC voltage on the ground in case of miswiring General Power Ground Pro uses a 9V alkaline battery Do not use any other battery If you are not using your Ground Pro for an extended period of time remove the battery from the unit in order to prevent damage caused by a possible battery leakage Note N...

Страница 7: ...Press the Power C button for at least two seconds The 3M Ground Pro Ground Integrity Meter will turn off Automatic Power Off In order to save battery life the Ground Pro has an automatic power off APO feature that will turn off the Ground Pro off after approximately 10 minutes if no buttons are pressed You can disable or enable APO by depressing the F button several times until you get to the scre...

Страница 8: ...edance and may alter measurement results especially at a lower scale In order to take impedance of test leads into account short the ends of the test leads together and depress the Function button F until you see the screen shown on the right In a few seconds this screen will disappear and you will hear a short beep The Ground Pro will return to normal measurement mode Now when the test leads are ...

Страница 9: ...t mode You should see a screen similar to the one on the right As in AC mode you can adjust the measurement scale using the Up and Down arrow buttons Overload If voltage on the ground is above the maximum level on a particular scale you should see an overload indicator such as the one on the right In such a case go to the next scale using the Up arrow button V V 0 2 4 V 0 2 4 0 10 6 8 2 4 If the t...

Страница 10: ... button You should see a screen similar to the one on the right with the REF indicator on The top line of the display shows the current impedance value in this example it is an open circuit and the bottom line shows the reference level Adjust the reference level by using the Up and Down arrow buttons Now when the impedance is below the reference value you should hear a beep The reference value is ...

Страница 11: ...1uV In order to measure EMI on a ground press the EMI button The screen will show the average value of the high frequency signal in Volts on the top display line and the magnitude of the envelope peak of the signal i e transients or spikes on the bottom line By pressing the EMI button one more time you can switch to dBuV units as shown above Autoscale The Ground Pro uses autoscaling in EMI mode no...

Страница 12: ...level for the peak signal as shown on the right Hold Function Pressing the Hold button once while in any measurement mode will cause the 3M Ground Pro Ground Integrity Meter to enter the Hold mode The display will freeze showing the value at the moment the button was pressed Pressing the Hold button a second time the display will show the maximum value of the signal accumulated from the moment of ...

Страница 13: ...erence Individual reference setting for each parameter Hold Hold Hold Max General Power Battery 9V Alkaline Dimensions approx 4 5 x 3 6 x 1 1 114 mm x 92 mm x 28 mm All specifications are subject to change without notice is active Please note that if you power down the 3M Ground Pro Ground Integrity Meter while in any of these modes it will remain in the same mode when the unit is powered up again...

Страница 14: ...the event any product is proven not to conform with 3M s Regulatory Information Sheet then 3M s entire liability and buyer s exclusive remedy will be at 3M s option either i replacement of product with a conforming product or ii refund of the purchase price paid by buyer for each non conforming product within a reasonable time after written notification of said non conformance and return of said p...

Страница 15: ...Hg 镉 Cd 六价铬 Cr VI 多溴联苯 PBB 多溴二苯醚 PBDE 电容引脚 Termination in capacitor 电位器中的电阻油墨 Resistor ink in potentiometer 二极管焊接部 Solder in diode 二极管电镀 Finish in diode 印刷电路板焊盘安装孔 Terminations in PCBs 电阻引脚 Terminations in resistors 电阻电镀部 Plating in resistors 连接器 Connector 三极管 Transistor 电感器 Inductor 电磁干扰滤波器 EMI filter 装置的焊接部 Solder in instrument IC焊接部 Solder in IC ...

Страница 16: ...ar from the time of purchase 3M MAKES NO OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE If this product is defective within the warranty period stated above your exclusive remedy shall be at 3M s option to replace or repair the 3M product or refund the purchase price of the 3M product Except where prohibited by law 3M will ...

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