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Summary of Contents for Cal Test Electronics CT4028A
- Page 1 CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual...
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Page 2: Notices
Cal Test Electronics, Inc warrants these products to be free from defective material or workmanship for a period of 2 year from the date of original purchase. Under this warranty, Cal Test Electronics, Inc is lim- ited to repairing this product when returned to the factory, shipping charges prepaid, within the warranty period. -
Page 3: Table Of Contents
Hazardous Substances Disclosure Table ......19 CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 4: Compliance Information
Directive, is marked as being put on the market after August 13, 2005, and should not be disposed of as unsorted municipal waste. Please utilize your local WEEE collection facilities in the disposition of this product. CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 5: Terms & Symbols
The UK Conformity Assessed (UKCA) marking is a conformity mark that indi- cates compliance with applicable requirements for products sold within Great Britain. Similar to the CE mark, products bearing the UKCA mark are acceptable in the UK market. CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 6: Safety Information
• The probe body should be kept clean and free of any conductive contamination. Refer to the section on cleaning. CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 7: Iec Measurement Category & Pollution Degree Definitions
Pollution - addition of foreign matter, solid, liquid, or gaseous (ionized gases) that may produce a reduc- tion of dielectric strength or surface resistivity. Pollution Degree 2 (P2)- only non-conductive pollution occurs except that occasionally a temporary conductivity caused by condensation is expected. CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 8: Introduction
Introduction Overview The Cal Test CT4028A High-Voltage divider probe can be used with analog or digital oscilloscopes that have an input resistance of 1 M (±1%) and nominal input capacitance between 10 and 35 pF. The CT4028A is a 1000:1 divider which extends the voltage measurement capability to 27 kV ACrms. -
Page 9: Supplied Accessories
Flat Bar Tip CT2962A Deluxe Trimmer Tool CT3648 Trimmer Tool CT4214 Alligator Ground Clip, Black CT4108-0 Alligator Ground Clip Lead, 1 m CT4494-85 High-Voltage Isolation Head (for use > 25 kV DC) CT4107 CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 10: Using Accessories
Attaching the Flat Bar Tip High-Voltage Isolation Head When measuring voltages at or above 25 kV DC, thread on the High-Voltage Isolation Head to increase the probe’s voltage capability. Figure 4 Attaching the High-Voltage Isolation Head CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 11: Optional Accessories
BNC Converter. The high-voltage probe converter allows impedance matching of the probe’s 1 M output to a DMM’s 10 M input. Usable with most quality DMMs, you can order this converter separately. Figure 6 CT3197B High-Voltage Probe BNC Converter CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 12: Measurement Instructions
This connection must always be made BEFORE the probe tip comes in contact with the high voltage and must not be removed until the probe tip has been removed from the high-voltage source. CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... - Page 13 WARNING Do not connect the ground clip to the high voltage source or the probe tip to the ground for any reason. WARNING Do not make any floating measurements with the probe. CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual...
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Page 14: Frequency Compensation
Using supplied trimmer tool, adjust the Low Frequency Adjustment Point (Figure 7) for the flattest square-wave top. Figure 8 shows the correctly compensated waveform. Figure 7 Low Frequency Adjustment Point Over Compensated Under Compensated Correctly Compensated Figure 8 Frequency Compensation Waveforms CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 15: High Frequency Compensation Adjustment
11. Using supplied trimmer tool, alternately adjust the two High-Frequency Adjustment points (Figure 9) for flat-topped square waves. Figure 10 shows the correctly compensated waveform. Figure 9 High-Frequency Adjustment Points Over Compensated Under Compensated Properly Compensated Incorrect Incorrect Correct Figure 10 High-Frequency Compensation Waveforms CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 16: Specifications
0°C to 50°C (32°F to 122°F) Storage Temperature -20°C to 70°C (-4°F to 158°F) Humidity ≤ 80% RH @ 40°C (104°F) Dimensions 340 mm length, 75 mm wide, 75 mm hight Weight 460 g (1 lb) CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 17: Voltage Derating
39 kV @ 1 kHz / 20 kV @ 10 kHz / 5 kV @ 100 kHz / 300 V @ 100 MHz 100kV 39kV - 10kV 100V 100k 100M Frequency (Hz) Figure 11 Voltage Derating Curve CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 18: Cleaning
Dry the probe thoroughly before attempting to make voltage measurements. CAUTION Do not subject the probe to solvents or solvent fumes as these can cause deterioration of the probe body and cables. CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... -
Page 19: China Rohs 2
X: Indicates that this hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in GB/T 26572. X: 表示該有害物質在用於該部件的至少一種均質材料中的含量高於 GB/T 26572 中的限量要求。 CT4028A 39 kV High-Voltage Oscilloscope Probe User Manual... - Page 20 © Cal Test Electronics, Inc. Electronic Format Only Manual Part Number: 451-121-001 Revision: A...
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