Model: PR-55 High Voltage Oscilloscope Probe 10 kV, 40 MHz USER MANUAL 1
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Safety Summary WARNING CAUTION 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 instrument. Only qualified personnel should use this probe.
Avoid making measurements under humidity, dampness or other environmental conditions that might affect safety. Turn the high voltage source off before connecting or disconnecting the probe whenever possible. The probe body should be kept clean and free of any conductive contamination. Do not remove the probe casing. Removal of the probe’s casing may expose you to electric shock. Keep fingers behind the probe’s finger guard during use.
• In atmospheric pressures outside the specified altitude limits or where the surrounding gas is not air. Use in an indoor Pollution Degree 2 environment. Measurements made by this instrument may be outside specifications if the instrument is used in non-office-type environments. Such environments may include rapid temperature or humidity changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical noise, strong electric fields, or strong magnetic fields.
1 General Information 1.1 Product Overview The B&K Precision PR-55 is a 10 kV High Voltage divider probe for use with both digital and analog oscilloscopes. 1.2 • • • • 2 Features Measure up to: 10 kV (DC + ACpk) or 7 kVrms AC 40 MHz bandwidth Voltage dividing of 1000:1 Frequency compensation Using the Probe 1. 2. 3. 4. 5. 6. Connect the probe to the BNC input of the oscilloscope. Select the desired volts/division range on your oscilloscope.
. 8. 9. You will now be able to analyze the voltage waveform on your oscilloscope. Turn off the high voltage source. Disconnect the High Voltage Probe from the high voltage source BEFORE disconnecting the ground clip lead. WARNING Do not exceed 60 seconds of contact between this probe and any circuit with voltages ≥8 kV DC, ≥5 kVrms AC, or ≥15 kVpk-pk AC. Wait for 5 minutes between such measurements.
• • Adjust the oscilloscope for a time base of 500 µs/div. Turn trimmer (Figure 1) to adjust the compensation on the probe making a flat pulse top. Figure 1: Trimmer on BNC Figure 2 shows how over- and undercompensated pulse responses will look.
Figure 3 shows a perfectly compensated probe.
4 Specifications All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 25 °C ± 5 °C.
5 Voltage Derating Curve WARNING When measuring higher frequency signals, be sure to comply with the Voltage vs Frequency Derating Curve. Figure 4: Voltage Derating Curve 6 Cleaning Clean only the exterior probe body and cables. Use a soft cotton cloth lightly moistened with a mild solution of detergent and water. Do not allow any portion of the probe to be submerged at any time. WARNING Dry the probe thoroughly before attempting to make voltage measurements.
B&K Precision 22820 Savi Ranch Parkway Yorba Linda, CA 92887 800-462-9832 or 714-921-9095 bkprecision.
