FLUKE 1260112E_w 电路图.pdf
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1、Technical Data 5790A Automated AC Measurement Standard Accuracy thats easy to use The 5790A is a complete automated ac measurement standard designed for the most demanding calibration applications. It combines the accuracy you would expect from a thermal transfer standard with the ease of use of a d
2、igital multimeter. Absolute ac voltage measurement uncertainties are as low as 24 ppm (one year, 23 C 5C). The 5790A is designed to meet the complete ac voltage and wideband verification requirements of the Fluke 5700A, 5500A, and 5100 Series and other calibrators, amplifiers like the 5725A and 5205
3、A, and transfer standards and ac voltmeters. The 5790A covers an alternating voltage range of 700 V to 1000 V, and a frequency range of 10 Hz to 1 MHz. A wideband voltage option extends frequency range to 30 MHz to meet the calibration requirements of the Fluke 5700A, and 5100 Series calibrators. Th
4、e 5790A is also compatible with Fluke A40 and A40A Current Shunts, which permit you to make ac/dc current transfer measurements up to 20A. The 5790A may be used alone or as a transfer standard with an external dc source. In either case the normally tedious switching and calculations are performed au
5、tomatically by the 5790A, and the resulting ac/dc difference is displayed directly on the easy-to-read vacuum fluorescent display. Precision you can depend on The 5790A is based on the patented Fluke Sol- id-State Thermal RMS Sensor, which has been proven since 1979 in a variety of Fluke products li
6、ke the 792A AC/DC Transfer Standard. The Fluke RMS Sensor is a true thermal converter, not an electronic converter that calculates the RMS value. Because its output voltage is 2V rather than the 7 to 10 mV of traditional thermocouples, the RMS sensor exhibits excellent signal-to-noise characteristic
7、s and minimal reversal errors. With a higher output voltage, more accurate measurements can be made. And because of its small size, the RMS sensor stabi- lizes quickly and operates over a wide temperature range. The 5790A also features hermetically sealed thin-film resistor networks to minimize ac m
8、ea- surement errors and enhance temperature coefficient. The RMS sensor and thin-film resistor networks are designed by Fluke to be rugged and reliable. Each is built to exacting standards by the Fluke Microelectronics Operation to maintain quality and consistency part after part. RadioFans.CN 收音机爱
9、好者资料库 2 Fluke Calibration 5790A Automated AC Measurement Standard Versatility that keeps you productive When you first power up the 5790A, diagnostics verify the instru ments integrity. The variety of input connections allows you to use the one that best suits your application. There are four sets o
10、f input terminals on the 5790A, two Type-N connectors and two sets of five-way binding posts. One Type-N and one set of binding posts are dedicated to the ac measurement and trans fer modes. AC or dc voltages may be applied to either input con nec tion over the 5790As full range, allowing you to per
11、form automated ac/dc transfer measurements. The 5790A determines automati- cally whether the applied voltage is ac or dc. The second Type-N input connection supports the optional wideband mode, and the second set of binding posts are designed for Fluke A40 Series current shunts. The input connection
12、 is selected with the touch of a key on the 5790A front panel. An LED indicates which selection is active. Whether you are using the 5790A as a voltmeter or a transfer standard, input voltage and frequency are always indicated on the measurement display. In the transfer mode, the ac/dc or ac/ac diff
13、erence is always indicated on the control display in ppm, %, volts or ratio. The 5790A is a fully autoranging instrument and selects the best voltage range for the measurement you are making. You may also select and lock in ranges manually. Robust 1200V input protection is active on all voltage rang
14、es. Using the trigger keys, the 5790A can switch from continuous to single measurements of the input voltage, making it easy to take sample read- ings at predetermined intervals. When using the 5790A in transfer mode, the ref- erence voltage is stored automatically, and all ac/dc or ac/ac difference
15、 measurements are made relative to it. At any time, you can view the reference by pressing the VIEW REF key. You may also store the average of two voltages as a reference to eliminate dc reversal errors, for example. The patented Fluke Solid-State RMS Sensor provides the 5790A with exceptional accur
16、acy and stability, and fast settling time. The intuitive front panel layout of the 5790A makes manual operation fast and simple. Keys and selections are logically arranged and labelled. And messages and menus are dis played clearly on the 5790As bright, vacuum fluorescent display. The 5790A is at ho
17、me in automated systems as well. IEEE-488 and RS-232 interfaces are included and all functions of the instruments can be con- trolled by a variety of host comput ers, including PCs. The 5790A can be integrated into automated systems operating under MET/CALTM Cali bra tion Software. Designed with you
18、r support requirements in mind The 5790A provides a self-contained calibration procedure designed to simplify periodic perfor- mance verification. The operator is prompted on what actions to take. To minimize the equipment required, the 5790A is designed to be supported by the Fluke 792A AC/DC Trans
19、fer Standard. The 5790A is compatible with Fluke A40 and A40A Current Shunts to permit measurements to 20A. Traceability to national standards for the 5790A is supported through the Fluke 792A. The 5790A is designed to meet the ac verification requirements of the Fluke 5700A Calibrator. Automation u
20、sing MET/CAL Calibration Software is fast and easy. RadioFans.CN 收音机爱 好者资料库 3 Fluke Calibration 5790A Automated AC Measurement Standard Specifications Absolute Uncertainty Specifications 5 C of Calibration Temperature Voltage Range Frequency Range Absolute Uncertainty AC/DC Transfer Mode ppm 2 Years
21、 Measurement Mode (ppm of Reading + V) 90 Days 1 Year 2 Years 2.2 mV 10 Hz - 20 Hz 20 Hz- 40 Hz 40 Hz - 20 kHz 20 kHz - 50 kHz 50 kHz - 100 kHz 100 kHz - 300 kHz 300 kHz - 500 kHz 500 kHz - 1 MHz 1700 + 1.3 740 + 1.3 420 + 1.3 810 + 2.0 1200 + 2.5 2300 + 4.0 2400 + 6.0 3200 + 6.0 1700 + 1.3 740 + 1.
22、3 420 + 1.3 810 + 2.0 1200 + 2.5 2300 + 4.0 2400 + 8.0 3500 + 8.0 1700 + 1.3 740 + 1.3 420 + 1.3 820 + 2.0 1200 + 2.5 2300 + 4.0 2600 + 8.0 5000 + 8.0 7 mV 10 Hz - 20 Hz 20 Hz - 40 Hz 40 Hz - 20 kHz 20 kHz - 50 kHz 50 kHz - 100 kHz 100 kHz - 300 kHz 300 kHz - 500 kHz 500 kHz - 1 MHz 850 + 1.3 370 +
23、1.3 210 + 1.3 400 + 2.0 600 + 2.5 1200 + 4.0 1300 + 6.0 2000 + 6.0 850 + 1.3 370 + 1.3 210 + 1.3 400 + 2.0 600 + 2.5 1200 + 4.0 1300 + 8.0 2300 + 8.0 850 + 1.3 370 + 1.3 210 + 1.3 410 + 2.0 610 + 2.5 1200 + 4.0 1400 + 8.0 3600 + 8.0 22 mV 10 Hz - 20 Hz 20 Hz - 40 Hz 40 Hz - 20 kHz 20 kHz - 50 kHz 50
24、 kHz - 100 kHz 100 kHz - 300 kHz 300 kHz - 500 kHz 500 kHz - 1 MHz 290 + 1.3 180 + 1.3 110 + 1.3 210 + 2.0 310 + 2.5 810 + 4.0 860 + 6.0 1400 + 6.0 290 + 1.3 190 + 1.3 110 + 1.3 210 + 2.0 310 + 2.5 810 + 4.0 890 + 8.0 1700 + 8.0 290 + 1.3 190 + 1.3 110 + 1.3 210 + 2.0 310 + 2.5 820 + 4.0 1000 + 8.0
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