AP031/AP032 Operators Manual
Contents
1. i yo DIFFERENTIAL LN AMPLIFIER ATTENUATION NETWORK c Making Measurements Ensure the probe is fitted with four high quality AA cells These should be cells that are protected from leakage which could damage the power supply contacts in the probes Before making any measurements or connections refer to the safety information contained in this document Connect the probe to one of the oscilloscope input channels ensuring the BNC connector is fully mated and the safety ground lead to the oscilloscope CAL BNC connection Select the proper range setting on the probe using the slide switch on the probe body Adjust the input coupling impedance and attenuation of the oscilloscope channel to which the probe is connected using the input coupling menu as shown in Figure 2 Ensure 1 M input impedance DC1M or AC1M is selected The use of 50 input impedance will unduly load the output of the differential probe resulting in reduced amplitude output and incorrect scaling To ensure the oscilloscope correctly interprets the vertical waveform scale be sure to adjust the probe attenuation setting using the Probe Atten menu controls The example shown x100 probe attenuation would achieve correct vertical scaling AP031 operating with a maximum range of 700 V see figure 3 below Finally adjust the vertical sensitivity and offset of the oscilloscope channel to which the probe is connected to achieve2. AP031 AP032 Differential Probe Operating Instructions AP031 032 OM E Revision B November 1996 Innovators in Instrumentation I Application a Overview The AP 031 AP032 are fully differential active probes designed for applications where electrical signals must be measured relative to a floating voltage different to the oscilloscope ground potential These probes are 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 these probes ensures safe operation of the oscilloscope and maintains high signal fidelity with good common mode rejection and dynamic range b Fully Differential Inputs 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 single ended signal may be measured by any grounded oscilloscope Because the differential 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 DCTODC Vt CONVERTER Ye BATTERY T TOTHE CIRCUIT UNDER TEST TO OSCILLOSCOPE
3. an optimum display Figure 3 DC Peak AC poa pp Tmw Grounded Grounded ACIMQ m div OFFset NORMALI ECL TTL C6lobal BWL 30MHz Probe Attenq x25 i x50 x200 x500 AP 032 1 20 140V E 1 200 ll Specifications GENERAL CHARACTERISTICS a ME TEA E lns Diferential AAA A e Sl Max Differential 1 100 Range 1 200 Range 700 V DC peak AC 1400 V DC peak AC or 500 V r m s or 1000 V r m s 1 10 Range 1 20 Range 70 V DC peak AC 700 V DC peak AC or 50Vrms or 100Vrms 700 V DC peak AC 1400V DC peak AC or 500 V r m s or 1000 V r m s 1400 V DC peak AC or 1000 V r m s CMRR gt a eS SO GENERAL CHARACTERISTICS Ambient Temperature Operating 102C to 402 C Storage 302 C to 702C Power requirement Four internal 1 5 V AA size batteries or 6 V d c 60 mA mains adaptor Not supplied Dimensions 6 6 168 mm x 2 4 62 mm x 0 79 20 mm excluding casing Cables BNC 95 cm RG58 U Input Lines 45 cm PVC double insulation Accessories 2 x Safety Hooks 4 mm compatible 1 red 1 black Weight 9 35 oz 285 g excluding batteries and casing Safety Certification IEC 1010 CAT Ill Approval lll Safety Information International Electrical Symbols that appear on the product Danger High Voltage Attention Refer to this manual before using the probe The probe has been designed to comply with IEC1010 1 IEC1010 2
4. 031 Installation Category Over voltage Category Ill Pollution Degree 2 Itis designed to be safe under the following environmental conditions Indoor use Altitude to 2000 m Temperature 10 C to 40 C Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 40 relative humidity at 50 C OPERATOR SAFETY 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 When using the probe ensure that your fingers are well clear from any exposed connections and behind the safety hooks shield Use of other hooks than the provided ones is not recommended In addition the following guidelines should be observed and followed MAXIMUM WORKING VOLTAGE To avoid injury do not use the probe above where the potential between each input lead and ground or the differential voltage between the two input leads exceeds 1000 V r m s 1400 V DC peak AC GROUNDING PRECAUTIONS Ensure the BNC cable is connected to a grounded oscilloscope before connecting the measuring inputs Ensure the safety ground lead is always connected to the oscilloscope CAL connector CLEANING The exterior of the probe only should be cleaned with a soft cloth moistened with either water or isopropyl alcohol USAGE AND MAINTENANCE The probe user should note that if the equipment is used in a manner not specified by the ma
5. nufacturer the protection provided by the equipment may be impaired To guarantee accurate performance characteristics mechanical shocks should be avoided as well as damage to the cable through excessive bending Do not use the probe if any part is damaged All maintenance should be referred to qualified personnel LECROY SALES amp SERVICE Corporate Headquarters 700 Chestnut Ridge Road Chestnut Ridge NY 10977 6499 Tel 914 578 6020 Fax 914 578 5985 European Headquarters Mannheimer Str 175 D 69123 Heidelberg Germany Tel 496221 82700 Fax 496221 833827 European Manufacturing Headquarters 2 rue du Pr de la Fontaine 1217 Meyrin 1 Geneva Switzerland Tel 022 719 21 11 Fax 022 782 39 15
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