TA041 25 MHz 700 V Differential Probe User`s
Contents
1. First issue 2 24 09 08 Renamed to TA041 3 06 08 10 Reformatted derating curve axis labels Corrected Swing data 4 11 04 12 Added calibration notes Pico Technology James House Colmworth Business Park St Neots Cambridgeshire PE19 8YP United Kingdom www picotech com Lemo Probus and Pico Technology are registered trademarks Manufactured in Republic of China Copyright Pico Technology 2008 2012 DO141 42. use four AA cells a6 V DC 60 mA mains adaptor a 9 V DC 40 mA mains adaptor or power leads Do not operate the probe if it is damaged If you suspect there is damage to this probe have it inspected by qualified service personnel 3 Description By enabling conventional oscilloscopes to display and measure in circuit waveforms that are referenced to high common mode voltages this differential probe extends the measurement capability of oscilloscopes to electronic power converters inverters motor speed controls switch mode power supplies and many other applications 4 Installation Simply plug in the BNC output connector to the vertical input of a general purpose oscilloscope or other measurement instrument and connect the auxiliary grounding terminal to a proper ground The measurement instrument must have a ground reference Install four AA cells or connect an appropriate power source to this probe Select the proper attenuation ratio When measuring signals below 70 V switch the attenuation ratio to 1 10 in order to get higher resolution and less noise Otherwise set the attenuation to 1 100 WARNING To protect against electric shock use only the es designed for use with this differential probe Using the appropriate probe accessories connect the input to the circuits under measurement measurements between two points on the circuit under test It is not intended for electrically insulating the circuit under test a
3. 1cO ot o TA041 25 MHz 700 V Differential Probe User s Manual This probe complies with IEC 1010 1 IEC 1010 2 031 CAT III Pollution Degree 2 1 Safety terms and symbols Terms appearing in this manual WARNING Warning statements identify conditions or practices that could result in injury or death CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Symbols appearing on the product A Danger Protective High Voltage Earth Terminal Areno Refer to Manual DO141 4 TA041 User s Manual Pico Technology 2 General safety summary Please review the following safety precautions to avoid injury and prevent damage to this probe or any products that are connected to it Observe maximum working voltage To avoid any injury do not use the probe above 1000 V RMS CAT III between each input lead and earth or between the two input leads This voltage rating applies to both the 1 10 and the 1 100 settings Ground the probe This probe is grounded with the shell of the BNC connector and an auxiliary grounding terminal Before making connections to the input leads of this probe ensure that its output lead is grounded You may do this either by connecting the BNC shell to a grounded measurement WARNING instrument or by connecting the auxiliary grounding terminal to eas ground point Read the next paragraph for further advice You mu
4. he trace on the isplay Connect the sprung hooks of the probe to power lines Set the range of the probe to 1 100 A 50 Hz or 60 Hz sine wave of proper amplitude will be displayed on the screen of the oscilloscope This means the probe is working properly 10 Calibrating the unit There are three main sources of uncertainty when calibrating a Pico differential probe in addition to any uncertainty in the test setup These are 1 The stated DC accuracy of the probe under test 2 2 Any DC offset or noise in the probe output The values in this manual are typical so to find the DC offset for a given unit a reading must be taken with the inputs to the probe shorted together 3 The AC performance of the probe This is specified as being within 3 dB over the entire frequency range of the probe Any absolute voltage accuracy testing must be done under DC conditions One other possible source of noise is the power source for the probe It is recommended that where possible the probes are calibrated using a battery supply rather than a mains supply unit Oe PED The adjustment procedure is available from Pico Technology on request 11 Cleaning Use a soft cloth to clean the probe taking care not to cause damage 1 Do not immerse the probe 2 Do not use abrasive cleaners 3 Do not use chemicals containing benzene or similar solvents DO141 4 Copyright Pico Technology 2008 2012 7 pico Issue history 1 28 08 08
5. nd the measuring instrument A CAUTION This probe is designed for carrying out differential DO141 4 Copyright Pico Technology 2008 2012 3 TA041 User s Manual Pico Technology 5 Signal leads a Output Lead The BNC output connector and an auxiliary grounding terminal are connected to the oscilloscope b Input Leads The input leads of the differential probe connect to sprung hooks that come with the probe c Sprung Hooks The sprung hooks are connected safely to test points in the circuits under test 6 Power leads Two types of power leads are available for use with this instrument 1 Lemo Lead For oscilloscopes with Lemo power connectors 2 Probus Lead For oscilloscopes with Probus power connectors Oscilloscope front Power Lead 4 Copyright Pico Technology 2008 2012 DO141 4 Pico Technology TA041 User s Manual 7 Specifications Bandwidth nput Impedance Differential Range 1 10 70 V DC Peak AC or 70 V RMS Differential Range 1 100 700 V DC Peak AC or 700 V RMS Common Mode Range 700V DC Peak AC or 700 V RMS 1 10 and 1 100 Absolute Max Voltage 1400 V DC Peak AC or 1000 V RMS CAT III Differential or common mode 1 10 amp 1 100 Swing offset typical Noise typical Source Impedance typical J gt ARE Ww alole 3 c o APIE a5 aa O i 86 dB 50 Hz 66 dB 20 kHz 10 to 40 C 30 to 70 C idi 5
6. st verify that the probe is securely grounded before connecting the probe input leads Some types of measuring instrument such as a USB oscilloscope connected to a laptop are unlikely to be grounded even if the laptop is powered from the mains Bench top oscilloscopes are usually grounded but in some cases may have been isolated from ground A USB oscilloscope connected to a desktop computer is usually grounded In any case do not assume that the measurement instrument is grounded Always verify the ground connection for yourself before connecting the probe input leads Use fused test prods if necessary If this probe is intended to use for measurements in circuits of INSTALLATION CATEGORY III it should incorporate with fused test prods Do not operate without covers To avoid electric shock or fire hazard do not operate this probe with the covers removed Do not operate in wet or damp conditions To avoid electric shock do not operate this probe in wet or damp conditions Do not operate in explosive atmosphere To avoid injury or fire hazard do not operate this probe in an explosive atmosphere 2 Copyright Pico Technology 2008 2012 DO141 4 Pico Technology TA041 User s Manual Avoid exposed circuitry To avoid injury remove jewelry such as rings watches and other metallic objects Do not touch exposed connections and components when power is present Use proper power source To ensure proper functioning of this probe
7. to 85 R 25 to 85 RH swn oS Offset typica Noise typica Source Impedance typica v ower Requirements Standard 4 AA cells or 6 V DC 60 mA mains adaptor or regulated 9 V DC 40 mA mains adaptor Options ength of Taput Leads ength of BNC Lead oa Voltage limit is the lesser of the DC Peak AC and RMS values KK EIT 3 O 5 v O 5 D 1 The supplied voltage must be less than 12 V and greater than 4 4 V otherwise the probe could be damaged or might not operate properly 2 Polarity is inside and outside If the polarity is wrong a built in circuit protects the probe so that no danger or damage will occur 3 When the voltage of the cells becomes too low the power indicator on the panel will flicker DO141 4 Copyright Pico Technology 2008 2012 5 TA041 User s Manual Pico Technology 8 Derating curve The derating curve for absolute maximum input voltage is as follows a ad gt oO 0 O O gt 10 M Frequency Hz 6 Copyright Pico Technology 2008 2012 DO141 4 Pico Technology TA041 User s Manual 9 Test procedure 1 Connect the BNC output connector to the vertical input of a general purpose oscilloscope Install four AA cells or connect an appropriate mains adaptor to this probe ie is oscilloscope input coupling to DC and 1 V div Center t
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