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TA044 bảng dữ liệu(PDF) 2 Page - List of Unclassifed Manufacturers |
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TA044 bảng dữ liệu(HTML) 2 Page - List of Unclassifed Manufacturers |
2 / 4 page 2 © Copyright Pico Technology 2008 DO139-1 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 2500 V rms CAT I between each input lead and earth or above 5000 V rms CAT I between the two input leads. Must be grounded This probe is grounded with the shell of the BNC connector and an auxiliary grounding terminal. WARNING 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 instrument, or by connecting the auxiliary grounding terminal to a reliable ground point. Read the next paragraph for further advice. You must 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. 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. DO139-1 © Copyright Pico Technology 2008 7 8. Derating curve The derating curve for absolute maximum input voltage is as follows: 9. Overrange indicator The overrange indicator lights up red if the voltage of the input signal exceeds the linear operating range of the probe. When this happens, the signal on the probe output may not accurately represent the signal on the probe input. 10. Test procedure a. Connect the BNC output connector to the vertical input of a general-purpose oscilloscope. b. Install four AA cells or connect an appropriate mains adaptor to this probe. c. Set the oscilloscope input coupling to DC and 1 V/div. Center the trace on the display. d. Connect the sprung hooks of the probe to power lines. e. Set the range of the probe to 1/100. f. A 50 Hz / 60 Hz sine-wave of proper amplitude will be displayed on the screen of the oscilloscope. This means the probe is working properly. 11. Cleaning Use a soft cloth to clean the probe, taking care not to cause damage. a. Do not immerse the probe. b. Do not use abrasive cleaners. c. Do not use chemicals contains benzene or similar solvents. 20 200 2500 2500 10 100 1000 10000 1.0E+05 1.0E+06 1.0E+07 1.0E+08 Frequenc y (Hz) |
Số phần tương tự - TA044 |
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Mô tả tương tự - TA044 |
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