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CT4192
User Manual

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Summary of Contents for Caltest CT4192

  • Page 1 CT4192 User Manual...
  • Page 2: 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 in injury...
  • Page 3 Observe Maximum Working Voltage Do not use the CT4192 probe above its maximum working voltage ranges. See “Electronic Characteristics” on page 8. Use Proper Power Source Do not operate this probe from a power source that applies more than the voltage specified.
  • Page 4: 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 5: Initial Inspection

    Differential probes allow safe, accurate measurement between two voltage points where neither point is referenced to ground. The CT4192 offers a 70 MHz bandwidth. Compatible with oscilloscopes from all major manufacturers, the probe can be battery operated, or powered by the optional 9 V adapter (CT3723).
  • Page 6: Product Overview

    2 Product Overview CT 4192 Description Hook probes, black and red Attenuation Function Switch Leads, black and red Power On/Off Switch Output BNC Connector Rubber boot External Power Connection Offset Adjust Power Indicator (Red) Figure 1 Front Panel Features caltestelectronics.com 450866-001 Rev.
  • Page 7: Using The Probe

    3 Using the Probe Power Connection Take the rubber boot off of the probe. Slide open the battery compartment and insert 4 AA batteries, being sure to match polarity with the printed indicators inside the compartment. Then Slide the cover back and replace the rubber boot. See Figure 2. Figure 2 Battery Connection Alternatively, connect the 9 VDC power adapter to the power jack on the probe.
  • Page 8: Getting Started

    Getting Started Connect the BNC output connector to the vertical input of a general purposed oscilloscope or other measurement instrument. The measurement instrument must have a ground referenced. Connect power source. Select the proper attenuation ratio. When measuring signals below 70 V, switch the attenuation ratio to 10x in order to get higher resolution and less noise ratio.
  • Page 9 Vertical Scale on Oscilloscope The actual vertical scale of the oscilloscope is equal to the attenuation factor multiplied by the range of vertical scale selected on the oscilloscope. For example, with the probe on factor 10x and the oscilloscope on 0.5 V/div, the real vertical scale is 10 x 0.5 = 5 V/div. With the probe on 100x, the real vertical scale is 100 x 0.5 = 50 V/ div.
  • Page 10: Offset Zero Procedure

    Offset Zero Procedure The CT4192 can be adjusted to zero the probe’s offset voltage using the offset adjustment tool supplied with the probe. Follow this procedure to perform the offset adjustment. Connect the probe to Channel 1 of the oscilloscope. Turn on the probe power.
  • Page 11: Specifications

    5 Specifications All specifications apply to the unit after a temperature stabilization time of 20 minutes over an ambient range of 25 °C ± °C. Electrical Characteristics Bandwidth 70 MHz Rise Time 7.5 ns Attenuation 10x/100x Accuracy ±1% -80 dB @ 50 Hz -60 dB @ 20 kHz AC CMRR -46 dB @ 1 MHz...
  • Page 12 Mechanical Characteristics Weight 400 g (with probe and rubber boot) Dimensions 170 x 63 x 21 mm BNC Cable Length 95 cm Input Leads Length 45 cm each Environmental Characteristics Operating Temp/Humidity -10°C to 40°C / up to 85% RH Storage Temp/Humidity -30°C to 70°C / up to 85% RH Pollution Degree...
  • Page 13: Voltage Derating Curve

    6 Voltage Derating Curve The derating curve of the absolute maximum input voltage in common mode is shown as follows: CT4192 Maximum Input Voltage Derating Curve 10,000 1,000 1,000 Frequency (MHz) Figure 4 Derating Curve caltestelectronics.com 450866-001 Rev. B...
  • Page 14: Service And Warranty Information

    7 Service & Warranty Information Limited One-Year Warranty Cal Test Electronics warrants this product to be free from defective material or workmanship for a period of 1 year from the date of original purchase. Under this warranty, Cal Test Electronics is limited to repairing the defective device when returned to the factory, shipping charges prepaid, within the warranty period.
  • Page 15 Notes caltestelectronics.com 450866-001 Rev. B...
  • Page 16 450866-001 Rev. B © 2017 Cal Test Electronics...

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