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Summary of Contents for YOKOGAWA 701931
- Page 1 User’s Manual 701931 Current Probe IM 701931-01E 8th Edition...
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Page 2: List Of Manuals
After reading the manual, keep it in a convenient location for quick reference whenever a question arises during operation. List of Manuals The following manuals are provided for the Current Probe (Model 701931). Manual Title Manual No. Notes... -
Page 3: Checking The Contents Of The Package
If this instrument is used in a manner not specified in this manual, the protection provided by this instrument may be impaired. Also, YOKOGAWA assumes no liability for the customer’s failure to comply with these requirements. - Page 4 Connection with Power Supply and Protective Grounding Connect the power supply to the probe power supply terminal of a waveform measuring instrument such as YOKOGAWA DL/DLM series, or use the Power Supply (Model 701934). Connecting the Probe to the Item under Test • If you need to touch the circuit with your hand, first cut the power to the...
- Page 5 Note • Accurate measurement may be impossible in locations subject to strong external magnetic fields, such as near transformers and high-current conductors, or in locations subject to strong external electric fields, such as near radio transmission equipment. • Depending on the current frequency that is measured, oscillation may occur, but this has no effect on measurements. IM 701931-01E...
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Page 6: Sales In Each Country Or Region
Do not dispose in domestic household waste. Authorized Representative in the EEA Yokogawa Europe B.V. is the authorized representative of Yokogawa Test & Measurement Corporation for this product in the EEA. To contact Yokogawa Europe B.V., see the separate list of worldwide contacts, PIM 113-01Z2. -
Page 7: The Following Markings Are Used In This Manual
Describes precautions that should be observed to prevent serious injury or death to the user. CAUTION Describes precautions that should be observed to prevent minor or moderate injury, or damage to the instrument. Note Provides important information for the proper operation of the instrument. IM 701931-01E... -
Page 8: Table Of Contents
Checking the Contents of the Package ................ii Safety Precautions ......................ii Sales in Each Country or Region ..................v The following markings are used in this manual.............. vi Chapter 1 701931 Current Probe Product Overview ......................1-1 Features .........................1-1 Names of Parts ......................1-2 Description of Parts ......................1-3... -
Page 9: Chapter 1 701931 Current Probe
Product Overview This unit can be directly connected to a BNC input connector of a waveform measuring instrument such as YOKOGAWA DL/DLM series, and by clamping it to a conductor to be measured, allows the current waveform to be easily captured. -
Page 10: Names Of Parts
Names of Parts Terminator Current Direction Indication LOCK Indication Sensor Power Supply Cable 4 (internal) Sensor Cable UNLOCK Indication IM 701931-01E... -
Page 11: Description Of Parts
• If using BNC-banana plug or similar adapters to connect to input terminals other than BNC connectors, make sure the polarity is correct. • Turn the clamp lever until it clicks, and check that it is locked securely. 8 Power Plug Connect the power plug to the receptacle on the Power Supply (Model 701934) to supply power to the sensor and terminator. IM 701931-01E... -
Page 12: Measurement Procedure
WARNING Connection with Power Supply Connect the power supply to the probe power supply terminal of a waveform measuring instrument such as YOKOGAWA DL/DLM series, or use the Power Supply (Model 701934). Connecting the Probe to the Item under Test • If you need to touch the circuit with your hand, first cut the power to the... -
Page 13: Preparations For Measurement
Turn the power switch OFF and connect the power cord. Connect the power plug of the 701931 to the power receptacle of the 701934. Turn the 701934 power switch ON, and check that the front panel power indicator lights. -
Page 14: Demagnetizing And Zero Adjustment
Set the input coupling of the waveform measurement instrument to DC. Connect the output connector of the 701931 to the input connector of the waveform measurement instrument. Turn the clamp lever until it clicks, and check that it is locked securely. -
Page 15: Measurement Procedure
The calibration period varies depending on your operating environment and the frequency of use. We recommend that you set a calibration period according to the frequency of use and ask us to calibrate it periodically. IM 701931-01E... - Page 16 It is now possible to monitor the current waveform. The output voltage rate of the 701931 is 0.01 V/A. Convert the voltage sensitivity of the waveform observation instrument to current sensitivity. For example, if the voltage sensitivity is 10 mV/DIV, the current sensitivity is 1 A/DIV.
- Page 17 Power source Load • Directly after powering ON, the demagnetizing waveform appears in the output; this is not a malfunction. • Accurate measurement may be impossible in locations subject to strong external magnetic fields such as transformers and high-current conductors, or in locations subject to strong external electric fields such as radio transmission equipment. IM 701931-01E...
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Page 18: Specifications
Approx. 27 (W) × 55 (H) × 18 (D) mm. Approx.1.06" (W) × 2.17" (H) × 0.71" (D) Mass Approx. 520 g. Approx. 18.3 oz. Accessories User’s manual, carrying case * In conjunction with a waveform measuring instrument with an input impedance of 1 MΩ ± 1% 1-10 IM 701931-01E... -
Page 19: Applicable Standards
Figure 1 Frequency Characteristics (Typical Characteristics) 1000 10 k 100 k 10 M Frequency [Hz] Figure 2 Derating According to Frequency 100 m 10 m 10 k 100 k Frequency [Hz] Figure 3 Input Impedance (Typical Characteristics) 1-11 IM 701931-01E... -
Page 20: Chapter 2 Malfunction? First, Investigate
Corrective Action to be Taken in Case of an Abnormality If maintenance service is required, or if the instrument still does not operate properly even after proper corrective action has been taken, contact your nearest YOKOGAWA dealer for repairs. Symptom Possible Cause Corrective Action Power is not turned ON.
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