AP031

Operator’s Manual AP031 Differential Probe © 2013 Teledyne LeCroy, Inc. All rights reserved. Unauthorized duplication of Teledyne LeCroy documentation materials other than for internal sales and distribution purposes is strictly prohibited. However, clients are encouraged to distribute and duplicate Teledyne LeCroy documentation for their own internal educational purposes. Teledyne LeCroy is a registered trademarks of Teledyne LeCroy, Inc. Windows is a registered trademark of Microsoft Corporation. Other product or brand names are trademarks or requested trademarks of their respective holders. Information in this publication supersedes all earlier versions. Specifications are subject to change without notice. 923064-00 Rev A June 2013 Warranty Teledyne Lecroy warrants this oscilloscope accessory for normal use and operation within specification for a period of one year from the date of shipment. Spare parts, replacement parts and repairs are warranted for 90 days. In exercising its warranty, Teledyne Lecroy, at its option, will either repair or replace any assembly returned within its warranty period to the Customer Service Department or an authorized service center. However, this will be done only if the product is determined by Teledyne Lecroy’s examination to be defective due to workmanship or materials, and the defect is not caused by misuse, neglect, accident, abnormal conditions of operation, or damage resulting from attempted repair or modifications by a non-authorized service facility. The customer will be responsible for the transportation and insurance charges for the return of products to the service facility. Teledyne Lecroy will return all products under warranty with transportation charges prepaid. This warranty replaces all other warranties, expressed or implied, including but not limited to any implied warranty of merchantability, fitness or adequacy for any particular purposes or use. Teledyne Lecroy shall not be liable for any special, incidental, or consequential damages, whether in contract or otherwise. AP031 Probe Safety Instructions This section contains instructions that must be observed to keep this oscilloscope accessory operating in a correct and safe condition. You are required to follow generally accepted safety procedures in addition to the precautions specified in this section. The overall safety of any system incorporating this accessory is the responsibility of the assembler of the system. Symbols These symbols may appear on the probe body or in this manual to alert you to important safety considerations. HIGH VOLTAGE, risk of electric shock. CAUTION of potential for damage to probe or instrument it is connected to or WARNING of potential bodily injury. Attend to the accompanying information to protect against personal injury or damage. Do not proceed until conditions are fully understood and met. ELECTROSTATIC DISCHARGE (ESD) HAZARD. The probe is susceptible to damage if antistatic measures are not taken. ON (POWER) OFF (POWER) DOUBLE INSULATION MEASUREMENT GROUND TERMINAL 2 923064-00 Rev A Operator’s Manual Precautions To avoid personal injury or damage to property, review and comply with the following safety precautions. Use product only as specified. The probe is designed to make differential voltage measurements. It is not to be used to insulate the circuit under test from the measuring instrument. Do not overload. To avoid electric shock or fire hazard, do not apply any potential that exceeds the maximum rating of the probe and/or the probe accessory (e.g. probe hooks), whichever is less. Connect and disconnect properly. To avoid electric shock or fire hazard, always make the connections from the probe input leads to the probe hooks before making any connections to a voltage source. Do not connect or disconnect probe hooks to a votage source unless they are first connected to the probe input leads. Ensure connections between probe input leads and probe hooks are secure before connecting them to a voltage source. Use only accessories compatible with the probe. Use only accessories that are shipped with the product. Substitution of other accessories may create a potential shock hazard. Comply with voltage derating curve. When measuring higher frequency signals, comply with the Voltage vs. Frequency Derating Curve (see Page 7). Observe all terminal ratings. To avoid electric shock or fire, do not use the probe above the input limits shown on the probe as well as all accessories. Do not remove probe casing. Removing the probe’s case or touching exposed connections may result in electric shock. Use only within operational environment listed. Do not use in wet or explosive atmospheres. Keep product surfaces clean and dry. 923064-00 Rev A 3 AP031 Probe Avoid damage to cable through excessive bending. Handle with care. Tips of probe hooks are sharp. They puncture skin or cause other bodily injury if not handled properly. Keep fingers behind the finger guard of the probe hooks. Do not operate with suspected failures. Before each use, inspect the probe and probe hooks for any potential damage such as tears or other defects in the probe body, cable jacket, accessories, etc. If any part is damaged, cease operation immediately and sequester the probe from inadvertent use. Introduction The AP031 is a fully differential active probe designed for applications where electrical signals must be measured relative to a floating voltage different to the oscilloscope ground potential. This probe is specifically designed for situations where:  The reference voltage may be several hundreds volts above or below ground.  Measurements require the rejection of common mode signals.  Ground loops and currents produce to excessive signal interference. The use of the probe ensures safe operation of the oscilloscope and maintains high signal fidelity with good common mode rejection and dynamic range. The probe is a fully differential active device. The differential capability allows measurements to be made between two points in a circuit without reference to ground. The two input signals are processed inside the probe (see figure 1) and the resulting singleended signal may be measured by any grounded oscilloscope. Because the differential 4 923064-00 Rev A Operator’s Manual voltage is calculated within the probe, with only the resultant difference signal being passed to the oscilloscope, a large dynamic range can be achieved with excellent rejection of common mode signals. Figure 1 923064-00 Rev A 5 AP031 Probe Specifications Electrical Characteristics Bandwidth 25 MHz Rise Time 14 ns Attenuation 1:10 / 1:100 Atten. Accuracy ±2 % Input Resistance 4 MΩ Input Capacitance Input Configuration Input Voltage 5.5 pF each side to ground Differential Max. Differential 1:100 Range ±700 V (DC + AC pk) and 700 V r.m.s. Max. Differential 1:10 Range ±70 V (DC + AC pk) and 70 V r.m.s. Max. Common Mode ±700 V ( DC + AC pk) and 700 V r.m.s. Max. Absolute ±1400 V ( DC + AC pk) and 1000 V r.m.s. CMRR 6 50 Hz - 80 dB 20 kHz - 60 dB Output Offset (Typical)