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3 / 4 page 6 © Copyright Pico Technology 2008 DO139-1 7. Specifications Bandwidth DC to 70 MHz (-3 dB) Attenuation ratio 1:100/1000 Accuracy ±2% Input Impedance 10 M Ω // 10 pF each side to ground Input Voltage Differential Range* (1/100) Max. Differential* (1/1000) ±700 V (DC + Peak AC) or 700 V rms ±7000 V (DC + Peak AC) or 5000 V rms Common Mode Range* ±7000V (DC + Peak AC) or 2500 V rms (1/100 and 1/1000) Absolute Max. Voltage* Common mode ±7000 V (DC + Peak AC) or 2500 V rms (1/100 & 1/1000) Differential mode ±7000 V (DC + Peak AC) or 5000 V rms (1/100 & 1/1000) Output Voltage Swing ±7V into 50 kΩ load Offset (typical) <±5 mV Noise (typical) 0.9 mV rms Source Impedance (typical) 50 Ω CMRR (typical) -80 dB @ 60 Hz; -50 dB @ 1 MHz Ambient Operating Temperature -10 to 40 ℃ Ambient Storage Temperature -30 to 70 ℃ Ambient Operating Humidity 25 to 85% RH Ambient Storage Humidity 25 to 85% RH Power Requirements Standard 4xAA cells or 6 V DC / 200 mA mains adaptor** or regulated 9 V DC / 120 mA mains adaptor** Options Power leads Length of Input Leads 60 cm Length of BNC Lead 90 cm Weight 500 g Dimension (LxWxH) 202 mm x 83 mm x 38 mm * Voltage limit is the lesser of the DC+Peak AC and RMS values. ** a. 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. b. 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. c. When the voltage of the cells becomes too low, the power indicator on the panel will flicker. DO139-1 © Copyright Pico Technology 2008 3 Use proper power source To ensure proper functioning of this probe, use four AA cells or a 6 VDC / 200 mA mains adaptor or 9 VDC / 120 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 a. 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. b. Install four AA cells or connect an appropriate power source to this probe. c. Select the proper attenuation ratio. When measuring signals below 700 V, switch the attenuation ratio to 1/100 in order to get higher resolution and less noise. Otherwise, set the attenuation to 1/1000. WARNING To protect against electric shock, use only the accessories designed for use with this differential probe. d. Using the appropriate probe accessories, connect the input to the circuits under measurement. CAUTION This probe is designed for carrying out differential measurements between two points on the circuit under test. It is not intended for electrically insulating the circuit under test and the measuring instrument. |
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