Text version of the page 
Text version of the page 
S PECIFICATIONS See Note Model 9120 Model 9220 Maximum line count on disc 4500
Maximum cycles/rev 7 4,500 36,000
Maximum counts/rev 18,000 144,000
(after quadrature decode by user) Instrument error, ± arcsec 1, 2 60 25
Quadrature error, ± electrical degrees 1, 3 30 24
Interpolation error, ± quanta 1, 4 N/A 0.1
Maximum output frequency, kHz
1X square waves 100 100
2X square waves N/A 150
5X square waves N/A 300
10X square waves N/A 500
Maximum weight, oz (g) 6 (170) S : ABEC 7 B : ABEC 5 grease-lubricated and sealed
Maximum radial shaft load, lb (N) 5 25 (111) Starting torque, in-oz (N-m) @20°C 6 S : 1.0 (7 x 10) -3-3 Running torque, in-oz (N-m) @20°C 6 Moment of inertia, in-oz-s (g-cm) 6 22-4-4 S : 0.5 (3.5 x 10) -3-3 B : 2.0 (14 x 10) B : 1.0 (7 x 10) Maximum acceleration, rad/s 2.8 x 10Operating temperature, °F (°C) 32 to 158 (0 to 70) 32 to 122 (0 to 50)
Storage temperature, °F (°C) 0 to 160 (-18 to 71)
Humidity, % rh, non-condensing 98
Shock 50 g, 11 ms
Vibration 15 g, 0-2000 Hz
Sealing IP66, except IP64 at the shaft exit Bearings 6 26 S : 1.3 x 10 (9.0) B : 2.9 x 10 (21.0) Bearing life (with 10 lb radial load) 1 x 10 revolutions 9 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 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 = (129600) x (error in quanta) / (counts/rev)5. The maximum recommended shaft load is based on bearing life considerations. If accuracy is critical, axial and especially radial shaft loads should be kept as low as possible. 6. S = solid shaft version; B = blind hollow shaft version 7. Refer to interpolation constraints table show on bottom of page 3. Output Wire Colors Pin # DX-15P Pin #DE-9P Pin # MS3102E-18-1P Notes: Functions Conn. Code P Conn. Code Q or R Conn. Code S Conn. Code A Conn. Code M A Yellow 8 4 A A 1. Channel B leads Channel A for clockwise shaft rotation, viewed from the shaft end. 2. FLT and /FLT signals are available with / A Brown 7 8 H B B Green 5 3 B C 9220 only, but not with connector code / B Orange 4 7 I D S. 3. Connector codes A and M are available with IND Blue 2 2 C E 9120S only. / IND White 1 6 J F FLT Violet 12 / FLT Gray 11 +V Red 10 5 D I COMMON Black 13 9 F J CASE Bare 9 1 G H n/c 3, 6,14,15 E G 9x20 Gurley Precision Instruments514 Fulton StreetTroy, 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 Page 2 of 6V092204 GPIGPI IIIIIIIIIIIIII
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