25MHz HIGH VOLTAGE DIFFERENTIAL PROBE USER'S MANUAL
Contents
1. 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 covers removed Do Not Operate in Wet Damp Conditions To avoid electric shock do not operate this probe in wet of damp conditions Do Not Operate in Explosive Atmosphere To avoid injury or fire hazard do not operate this probe in an explosive atmosphere Avoid Exposed Circuit 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 this probe function well use four AA cells or 6VDC 60mA or regulated 9VDC 40mA mains adaptor or power lead Do not operate this probe from a power source that applies more than the voltage specified Do Not Operated With Suspected Failures 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 The differential probe extends the measurement capability of oscilloscopes in electronic power converters inverters motor speed controls switch mode power supplies and many applications 4 Installation a Si2. or regulated 9VDC 40mA USB power cord 95cm 45cm 400gms probe and PVC jacket 170mm x 63mm x 21mm The supplied voltage must be less than 12V and greater than 4 4V otherwise the probe could be damaged or can t be operated properly polarity is inside and outside For wrong polarity built in circuit protects the probe no danger or damage will occur When the voltage of the cells become too low the power indicator on the panel will flicker Specifications Attenuation Ratio 1 20 200 Bandwidth Accuracy Rise Time Input Impedance Input Voltage Category Differential Range Common Mode Range Absolute Max Voltage Differential or Common Mode Output Voltage Swing Offset typical Noise typical Source Impedance typical CMRR typical Ambient Operating Temperature Ambient Storage Temperature Ambient Operating Humidity Ambient Storage Humidity Power Requirements Standard Options Length of BNC Cable Length of Input Leads Weight Dimensions LxWxH DC to 25MHz 3dB 2 14ns 4MQ 5 5pF each side to ground CAT III 140Vrms and 140V DC Peak AC 1 20 1000Vrms and 14000V DC Peak AC 1 200 1000Vrms and 1400V DC Peak AC 1 20 amp 1 200 1000Vrms and 1400V DC Peak AC 1 20 amp 1 200 7V into 50kQ load lt 5mV 0 7mVrms 50Q for using IMA input system oscilloscope 80dB 50Hz 60dB 20kHZ 10 to 40 C 30 to 70 C 25
3. in circuits under measurement 6 Power Leads We offer the following power leads a Adaptor Lead For the oscilloscope whose power connector is Lemo connector b Adaptor Probus Lead For the oscilloscope whose power connector is Probus connector c USB Power Cord For the oscilloscope which offers USB connector AS Differential Probe The panel of oscilloscope Power Lead 7 Specifications Attenuation Ratio 1 10 100 Bandwidth Accuracy Rise Time Input Impedance Input Voltage Category Differential Range Common Mode Range Absolute Max Voltage Differential or Common Mode Output Voltage Swing Offset typical Noise typical Source Impedance typical CMRR typical Ambient Operating Temperature Ambient Storage Temperature Ambient Operating Humidity Ambient Storage Humidity Power Requirements Standard Options Length of BNC Cable Length of Input Leads Weight Dimensions LxWxH DC to 25MHz 3dB 2 14ns 4MQ 5 5pF each side to ground CAT M 70Vrms and 70V DC Peak AC 1 10 700Vrms and 700V DC Peak AC 1 100 700Vrms and 700V DC Peak AC 1 10 amp 1 100 1000Vrms and 1400V DC Peak AC 1 10 amp 1 100 7V into 50kQ load lt 5mV 0 7mVrms 50Q for using IMA input system oscilloscope 80dB 50Hz 60dB 20kHZ 10 to 40 C 30 to 70 C 25 to 85 RH 25 to 85 RH 4xAA cells Power leads Mains adaptor 6VDC 60mA
4. 25MHz HIGH VOLTAGE DIFFERENTIAL PROBE USER S MANUAL This probe is in compliance with IEC 61010 031 CAT III Pollution Degree 2 1 Safety Terms and Symbols Terms appear in this manual WARNING Warning statements identify conditions or practice that A could result in injury or loss life A CAUTION Caution statements identify conditions or practice that could result in damage to this product or other property Symbols appear on the product ZN Danger Protective Attention High Voltage Earth Terminal Refer to Manual 2 General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this probe or any products that connected to it Observe Maximum Working Voltage To avoid any injury do not use the probe under the condition that the voltage between either input lead or earth is above 1000Vrms CAT III This voltage rating applies to both of 1 10 amp 1 100 or 1 20 amp 1 200 settings Must be Grounded This probe is grounded with the shell of BNC connector and an auxiliary grounding terminal through the grounding conductor of the power cord of the measurement instrument Before making connections to the input leads of this probe ensure that the output BNC connector is attached to the BNC connector of the measurement instrument and the auxiliary grounding terminal is connected to a proper ground while the measurement instrument is properly grounded
5. mply plug in the BNC output connector to the vertical input of a general purposed oscilloscope or other measurement instrument and connects the auxiliary grounding terminal to a proper ground The measurement instrument must have a ground referenced b Connect an appropriate power source to this probe and then turn it on c Select the proper attenuation ratio When measuring signals below 70V or 140V switch the attenuation ratio to 1 10 or 1 20 in order to get higher resolution and less noise ratio Otherwise set the attenuation ratio to 1 100 or 1 200 when measuring signals up to 700V or 1400V T WARNING To protect against electric shock use only the accessories supplied with this probe d Using the appropriate probe accessories connect the inputs to the circuits under measurement CAUTION This probe is to carry out differential measurement A between two points on the circuit under measurement This probe is not for electrically insulating the circuit under measurement and the measuring instrument 5 Appearance The differential probe looks as follows Armee eco p M a i FEU a 2 a A rem CA a PF a b a Output Cable 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
6. to 85 RH 25 to 85 RH 4xAA cells Power leads Mains adaptor 6VDC 60mA or regulated 9VDC 40mA USB power cord 95cm 45cm 400gms probe and PVC jacket 170mm x 63mm x 21mm The supplied voltage must be less than 12V and greater than 4 4V otherwise the probe could be damaged or can t be operated properly polarity is inside and outside For wrong polarity built in circuit protects the probe no danger or damage will occur When the voltage of the cells become too low the power indicator on the panel will flicker 8 Derating Curve The derating curve of the absolute maximum input voltage in common mode is shown as follows TS gt Y D EN i gt 100 1 0E 06 1 0E 07 1 0E 08 Frequency Hz 9 Inspection Procedure a Connect the BNC output connector to the vertical input of a general purposed oscilloscope b To install four AA cells or connect an appropriate mains adaptor or power lead to the correct line voltage c Set the oscilloscope input coupling to DC and the 1V div Center the trace on the display d Connect the inputs of the probe to power lines e Set the range of the probe to 1 100 or 1 200 Then a 50Hz 60Hz sine wave of proper amplitude will be displayed on the screen of the oscilloscope and this means the probe is working properl
7. y 10 Cleaning Use a soft cloth to clean the dirt Prevent damage to probe a Avoid immersing the probe b Avoid using abrasive cleaners c Avoid using chemicals contains benzene or similar solvents Lemo and Probus are the registered trademarks Date May 4 2011
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