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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Specifications | | | | | | | | | | SEE NOTE MODEL 8135S MODEL 8235S | | | | | | | | | | Maximum line count on disc | | 11,250 | | | | | | | | | | | | | | | | | | | | | | | | Max cycles/rev with internal electronics | | 22,500 | 90,000 | | | | Max counts/rev (after quad edge detection) | | 90,000 | 360,000 | | | | Max cycles/rev with external electronics | 5 | N/A | 225,000 | | | | Max counts/rev with external electronics (after quad edge detection) | 5 | N/A | 900,000 | | | | Instrument error, ± arcsec | 1,2 | 30 | 15 | | | | Quadrature error, ± electrical degrees | 1,3 | 30 | 24 | | | | Interpolation error, ± quanta | 1,4 | 0.15 | 0.10 | | | | | 1x square waves | | 100 | | | | | 2x square waves | | 150 | | | | FREQUENCY RESPONSE | 5x square waves | | N/A | 300 | | | | RESPONSE kHz | 8x square waves | | N/A | 500 | | | | | Up to 20x square waves | 5 | N/A | 1000 | | | | Maximum weight, oz (g) | | 32 (907) | | | | Starting torque, in-oz (N-m) [at 20°C] | | 2.0 (14.0 x 10-3) | | | | Running torque, in-oz (N-m) [at 20°C] | | 1.0 (7.0 x 10-3) | | | | Moment of inertia, in-oz-s2 (g-cm2) | | 2.3 x 10-3 (164) | | | | Maximum acceleration, rad/s2 | | 1 x 106 | | | | Operating temperature range, °F (°C) | | 32 to 158 (0 to 70) | | | | Storage temperature range, °F (°C) | | 0 to 160 (-18 to 71) | | | | Humidity, % RH non-condensing | | 98 | | | | Shock | | | 50 g, 11 ms | | | | Vibration | 15 g, 0-2000 Hz | | | | | | | | | | | | | | | | | | | | NOTES: | | | | | | | | | | 1. Total Optical Encoder Error is the algebraic sum of Instrument Error + Quadrature Error + Interpolation Error. Typically, these error sources sum to a value less than the theoretical maximum. Error is guaranteed at 20°C and is defined at the signal transitions. It does not include quantization error, which is ±1/2 quantum. ("Quantum" is the final resolution of the encoder, after user's 1x, 2x or 4X quadrature decode.) 2. Instrument Error is the sum of disc pattern errors, disc eccentricity, bearing runout and other mechanical imperfections within the encoder. This error tends to vary slowly around a revolution. 3. Quadrature Error is the combined effect of phasing and duty cycle tolerances and other variables in the basic analog signals. This error applies to data taken at all four transitions within a cycle; if data are extracted from 1X square waves on a 1X basis (i.e., at only one transition per cycle), this error can be ignored. Error in arcseconds = (3600) x (error in electrical degrees) / (disc line count) 4. Interpolation Error is present only when the resolution has been electronically increased to more than four data points per optical cycle. It is the sum of all the tolerances in the electronic interpolation circuitry. Error in arcseconds = (1296000) x (error in quanta) / (counts/rev) | | | | | | | | | | 5. With external Model HR2A High Resolution Electronics. Frequency response is as stated for output signals, or 50 kHz at the disc, whichever is limiting. | | | | | | | | | | Gurley Precision Instruments 514 Fulton Street Troy, NY 12180 U.S.A. (800) 759-1844, (518) 272-6300, fax (518) 274-0336, Online at www.gurley.com, e-mail: info@gurley.com | | | | | | 83 5S Page 2 of 6 V3.1 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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