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Summary of Contents for Cal Test Electronics CT4071
- Page 1 CT4071 CT4072 User Manual...
- Page 2 CT4071 and CT4072 Differential Probes User’s Manual © 2017 Cal Test Electronics. All rights reserved. Unauthorized duplication of Cal Test Electronics documentation materials is strictly prohibited. Customers are permitted to duplicate and distribute Cal Test Electronics documentation for internal educational purposes.
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Page 3: Safety Summary
Safety Summary To avoid personal injury and/or product damage, review and comply with the following safety precautions. These precautions apply to both operating and maintenance personnel and must be followed during all phases of operation, service, and repair of this probe. WARNING statement calls attention to an operating procedure, practice, or condition, which, if not followed correctly, could result... - Page 4 Capacitors inside the instrument may retain a charge even if the instrument is disconnected from its source of supply. Use Only in Office-Type Indoor Setting The probe is designed to be used in office-type indoor environments. Do not operate the probe: In the presence of noxious, corrosive, flammable fumes, gases, vapors, chemicals, or finely-divided particulates.
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Page 5: Compliance Statements
Must be Grounded This probe is grounded by the shell of the BNC connector through the grounding conductor of the power cord of the measurement instrument. Before making connections to the input leads of this probe, ensure that the output BNC connector is attached to the BNC connector of the measurement instrument, and that the measurement instrument is properly grounded. -
Page 6: Terms And Symbols
Terms and Symbols The following symbols appear on the product or in its documentation: Direct current Both direct and alternating current Caution, possibility of electric shock Caution, see documentation for details Double insulation Earth Ground Definitions Measurement Category II (CAT II) refers to local-level electrical distribution, such as that provided by a standard wall outlet or plug-connected equipment. -
Page 7: Initial Inspection
The CT4071 and CT4072 differential probes allow safe, accurate measurements between two voltage points where neither point is referenced to ground. The CT4071 offers a 50 MHz bandwidth and the CT4072 offers a 100 MHz bandwidth. Both are compatible with oscilloscopes from all major manufacturers. -
Page 8: Product Overview
2 Product Overview Probe Description High Voltage Hook Probes, black and red Alligator Clips, black and red Test Leads, black and red Power and Over Range Indicators (Red) External Power Connection 4 mm Probe, Attenuation black and red Selector Switch (CT4072 only) Insulated BNC Cable... -
Page 9: Using The Probe
3 Using the Probe WARNING At the time of powering on the probe, the input leads must not be connected to an item to be tested. Never operate the probe with the case open. CAUTION This probe is used to carry out differential measurements between two points on the circuit under test. -
Page 10: Getting Started
Getting Started Connect the BNC output connector to the vertical input of a general purposed oscilloscope. The oscilloscope must have a ground referenced. Connect power adapter. Select the proper attenuation ratio. When measuring signals below 350 V, switch the attenuation ratio to 100x in order to get higher resolution and less noise ratio. - Page 11 Vertical Scale on Oscilloscope Scope Input Probe Actual Vertical Scale Actual Vertical Impedance Attenuation Attenuation Reading on the Scale of the Setting Setting Oscilloscope Oscilloscope 1 MΩ 0.5 V/div 10 V/div 1 MΩ 0.5 V/div 25 V/div 1 MΩ 200x 200x 0.5 V/div 100 V/div...
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Page 12: Specifications
All specifications apply to the unit after a temperature stabilization time of 20 minutes over an ambient range of 25°C ± 5°C. Electrical Characteristics Bandwidth 50 MHz (CT4071) 100 MHz (CT4072) 7 ns for 200x, 500x, & 1000x 18 ns for 200x, 500x, & 1000x... -
Page 13: Mechanical Characteristics
Mechanical Characteristics Weight 280 g Dimensions 240 x 80 x 30 mm BNC Cable Length 100 cm Input Leads Length 55 cm each Environmental Characteristics Operating Temp/Humidity 0°C to 50°C / 10% to 85% RH Storage Temp/Humidity -30°C to 70°C / 10% to 90% RH Pollution Degree Pollution Degree 2 Safety Specifications... -
Page 14: Voltage Derating Curve
6 Voltage Derating Curve The derating curve of the absolute maximum input voltage in common mode is shown as follows: CT4071 Maximum Input Voltage Derating Curve 5,000 3,500 1000 1KHz 10KHz 100KHz 1MHz 10MHz 100MHz Frequency Figure 2 CT4071: Derating Curve... -
Page 15: Service And Warranty Information
Units returned to Cal Test Electronics that have been subject to abuse, misuse, damage, or accident, or have been connected, installed, or adjusted contrary to the instructions furnished by Cal Test Electronics, or that have been repaired by unauthorized persons, will not be covered by this warranty. - Page 16 450886-001 Rev. A © 2018 Cal Test Electronics...
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