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3.3 Getting Started

1. 

Connect the hook probes to the leads.

2. 

Connect the probe to the oscilloscope with the BNC cable. 

When using a portable or ungrounded oscilloscope, connect 

the output ground lead to ground.

3. 

Switch the probe “ON.”

4. 

Switch to the desired attenuation ratio. 

5. 

Use the hook probes to contact the circuit to be tested.

CAUTION 

This probe is used to carry out differential measurements between 

two points on the circuit under test. This probe is not for electrically 

insulating the circuit under test and the measuring instrument.

3.4 Overrange Indicator

The overrange indicator lights when the voltage of the input signal 

exceeds the linear operating range of the probe. When this happens, 

the signal on the probe output may not accurately represent the signal 

on the probe input.

Summary of Contents for CT3686

Page 1: ...CT3686 CT3687 User Manual...

Page 2: ...ot work alone when working with high voltages Inspect the Probe Inspect the probe and accessories for cracks and frayed or broken leads before each use If defects or damages are noted DO NOT USE the p...

Page 3: ...se in contact with the human body or for use as a component in a life support device or system Do Not Substitute Parts Do not install substitute parts or perform any unauthorized modification to the i...

Page 4: ...is intended to use for measurements in circuits of installation CAT III it should incorporate the use of fused test probes Compliance Statements Disposal of Old Electrical Electronic Equipment Applic...

Page 5: ...battery operated powered by a universal adapter optional or powered by USB power lead optional if the oscilloscope is so equipped Features z z Meets IEC 61010 031 safety standard z z 100 MHz bandwidth...

Page 6: ...shipment After the inspection verify the contents of the shipment The kit contains z z Differential probe z z 2 Hook probes black red z z 4 AA batteries z z Offset adjustment tool z z User manual 2 Pr...

Page 7: ...re the batteries are positioned for proper polarity After inserting the batteries close the case When the batteries are low the power indicator will start to flicker and dim 3 2 Inspection Procedure 1...

Page 8: ...Use the hook probes to contact the circuit to be tested CAUTION This probe is used to carry out differential measurements between two points on the circuit under test This probe is not for electricall...

Page 9: ...on Oscilloscope Scope Input Impedance Probe Attenuation Setting Actual Attenuation Setting Vertical Scale Reading on the Oscilloscope Actual Vertical Scale of the Oscilloscope 1 M 10x 10x 0 5 V div 5...

Page 10: ...de x16 or high resolution mode to reduce oscilloscope noise 8 Using the offset adjustment tool included adjust the probe offset voltage to 0 volts 4 Cleaning This probe does not require any particular...

Page 11: ...ximum Differential Input Voltage DC AC peak 70 V 10x 700 100x 140 V 100x 1400 1000x Maximum Common Mode Input Voltage DC AC peak 700 V 1400 V Absolute Maximum Rated Input Voltage each side to ground 7...

Page 12: ...ons IEC 61010 031 CAT II Specifications are subject to change without notice To ensure the most current version of this manual please download the current version from our website caltestelectronics c...

Page 13: ...ersons will not be covered by this warranty Cal Test Electronics reserves the right to discontinue models change specifications price or design of this device at any time without notice and without in...

Page 14: ...800 572 1028 caltestelectronics com 13...

Page 15: ...800 572 1028 caltestelectronics com 14...

Page 16: ...2017 Cal Test Electronics 450847 001...

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