1417 电路图.pdf

534 Main Street, Westbury, NY 11590 IET LABS, INC. in the GenRad T TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 Contents p. 2 Applic. pp. 4-8 Selection pp. 9-11 Products pp. 12-87 GenRad prod ucts pp. 50-87 Index p. 89 64 A laboratory standard Standard for dissipation factor cation & calibration of LCR meters Working standard cation of calibration of multimeters Capacitance measurement functions For calibrating instrumentation 1 F to 1 F in decade steps 0.25% direct-reading capacitance accuracy 0.1% or better ratio accuracy Dissipation - factor standard Electronic cat/1482/09-15-03 The 1417 Four-Terminal Capacitance Standard consists of a 1 F standard capacitor and two precise inductive voltage dividers used to scale the value of the 1 F capacitor up to 1 F in decade steps. This arrangement provides accuracy and stability unattainable with very high-value true capacitors. Model 1417 Capacitance Standard In addition to the seven direct-reading capacitance values, an nite number of intermediate or higher capacitance values can be obtained by using external capacitors. An external capacitor is simply connected to the 1417s external standard terminals, either directly or in parallel with a 1 F internal standard, and the result- ing capacitance is scaled in value by the 1417s inductive voltage dividers. The direct - reading accuracy of the 1417 is 0.25% plus ratio ac- curacy at test frequencies of 100, 120, or 1000 Hz. Since the 1417 scaling ratios are precise and repeatable, better accuracy can be obtained by measuring the actual value of the internal 1 F stan- dard or of an external standard before scaling. The 1417 also servers as a standard of dissipation factor (D). The dissipation factor of the 1417 is intentionally set to 0.01 at test frequencies of 100, 120 and 1000 Hz. Basic D accuracy at these frequencies is 0.001. The 1417 may also be used as a two-terminal capacitance standard gu- ration, D is less than 1 for capacitance values up to 1000 F at frequencies below 150 Hz. This feature allows the 1417 to be used in calibrating the higher capacitance ranges of popular universal or RLC bridges. One additional feature of importance is that all the 1417s parame- ect, its ultimate accuracy depends on the accuracy of the external measurement equipment. 1417 Series p. 1 of 2 Capacitance Standard up to 1 F Electronic cat/1417 p1/05-26-05 RadioFans.CN 收音机爱 好者资料库 ORDERING INFORMATION 1417-9700 Four-Terminal Capacitance Standard Capacitance: Internal Standard: 1 F in 7-switch-selected decade values External Standard: Indicated capacitance, multiplied by C ext/F. Capacitance Accuracy, Direct-Reading: 0.25% plus ratio ac- curacy at 100 Hz, 120 Hz and 1 kHz, 20 to 25C, with low applied voltage (< E, max) using internal standard and a proper four-ter- minal measurement. (May also be used as a two-terminal standard, with a D < 1 and a capacitance change from the four-terminal value of < % up to 1 mf at 120 Hz or less). Capacitance Ratio: Accuracy see table above. Dissipation Factor: 0.01 at 100 Hz, 120 Hz and 1 kHz. For D ac- curacy, see table. Terminal Impedance: See fi gure and table (approximate values given). Temperature Coeffi cient: Approximately -140ppm/C. Voltage Characteristic: Approximately +0.3 % change from 0V to E max (see table) at 100 Hz. Less at higher frequencies. Mechanical: Bench cabinet. Dimensions: 14.7 cm H x 21.5 cm W x 13.2 cm D (5.9 x 8.5 x 5.25). Weight: 52.7 kg (6 lb.) net, 5 kg (11 lb.) shipping. SPECIFICATIONS Capacitance Value Ratio AccuracyD AccuracyApproximate Termanal Impedance E Max* AC (V) *DC Voltage cannot be applied (Internal Standard) 100 & 120 Hz1 kHz100 & 120 Hz1 kHzZA ()ZB () 1 F 10 F 100 F 1 mF 10 mF 100 mF 1 F - 0.02% 0.02% 0.02% 0.03% 0.1% 0.25% - 0.04% 0.04% 0.06% 0.2% - - 0.001 0.001 0.001 0.001 0.001 0.003 0.01 0.001 0.001 0.001 0.002 0.005 - - 0.03 7.0 3.1 1.1 0.37 0.13 0.04 0.03 15.5 6.4 2.2 0.72 0.23 0.05 20 6 2 0.8 0.5 0.25 0.06 534 Main Street, Westbury, NY 11590 IET LABS, INC. in the GenRad T TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 Con tents p. 2 Applic. pp. 4-8 Selection pp. 9-11 Products pp. 12-87 GenRad prod ucts pp. 50-87 Index p. 89 65 1417 Series1417 Series p. 2 of 2 Capacitance Standard up to 1 F RadioFans.CN 收音机爱 好者资料库