Linear and Rotary Encoders

Mercury 1500 Digital Output Encoder Systems
Rotary Encoder

Factory Set Resolution to 0.50µm
Small sensor with ultra-low Z height; flush screw mounting
Sensor is 8.4mm(H) x 12.7mm(W) x 20.6mm(L) and weighs 1.6g
Available with 15 pin standard D connector or micro-connector
A-quad-B output and Index window
Factory set interpolation x4, x8, x20, x40 for resolutions of 5µm to 0.50µ(linear);
Entire system is EMI shielded
Bi-directional index signal
Index mark at the center or end of the glass scale(linear)
Alignment Tool enables fast set up

Rotary - 20µm grating pitch

Rotary Glass Scale Diameter	Fundamental Resolution		Interpolation Below is a table of the available resolutions
0.472" [12.00mm]	1650 CPR		x4	x8	x20	x40
		interpolated resolution (CPR)	6,600	13,200	33,000	66,000
		interpolated resolution (arc-sec/count)*	196.4	98.2	39.2	19.64
		interpolated resolution (µrad/count)*	952	476	190.3	95.2
		maximum speed (RPM)	13090	13090	13090	13090
0.750" [19.05mm]	2500 CPR		x4	x8	x20	x40
		interpolated resolution (CPR)	10,000	20,000	50,000	100,000
		interpolated resolution (arc-sec/count)*	129.6	64.8	25.9	12.96
		interpolated resolution (µrad/count)*	628	314	125.6	62.8
		maximum speed (RPM)	8640	8640	8640	8640
1.250" [31.75mm]	4096 CPR		x4	x8	x20	x40
		interpolated resolution (CPR)	16,384	32,768	81,920	163,840
		interpolated resolution (arc-sec/count)*	79.1	39.6	15.82	7.91
		interpolated resolution (µrad/count)*	383	191.7	76.6	38.3
		maximum speed (RPM)	5273	5273	5273	5273
2.250" [57.15mm]	8192 CPR		x4	x8	x20	x40
		interpolated resolution (CPR)	32,768	65,536	163,840	327,680
		interpolated resolution (arc-sec/count)*	39.6	19.78	7.92	3.96
		interpolated resolution (µrad/count)*	191.7	95.8	38.3	19.17
		maximum speed (RPM)	2637	2637	2637	2637
4.250" [107.95mm]	16384 CPR		x4	x8	x20	x40
		interpolated resolution (CPR)	65,536	131,072	327,680	655,360
		interpolated resolution (arc-sec/count)*	19.78	9.89	3.96	1.978
		interpolated resolution (µrad/count)*	95.8	47.9	19.16	9.58
		maximum speed (RPM)	1318	1318	1318	1318

System

Grading Period	20µm
System Resolution	5µm, 2.5µm, 1.00µm or 0.50µm (linear)
Linear Accuracy*	Better than 1µm available; contact MicroE Better than 3µm up to 130mm, 5µm from 155mm to 1m, 5µm per meter from 1m to 2m
maximum peak to peak error over the specified movement when compared to a NIST-traceable laser interferometer standard, used at room temperature and with MicroE interpolation electronics. *Or +/- one quadrature count, whichever error value is greater.
Rotary Accuracy*	Scale O.D	Microradians**	Arc-Seconds**
	12.00mm	100	21
	19.05mm	63	13
	31.75mm	38	7.8
	57.15mm	19	3.9
	107.95mm	10	2.1
Based on ideal scale mounting concentricity *Or +/- one quadrature count, whichever error value is greater

Sensor Size

Operating and Electrical Specification

Power Supply	5VDC 5% @60mA
Temperature
Operating:	0 to 70°C
Storage:	-20 to 70°C
Humidity:	10 -90% RH non-condensing
EMI:	M1500S: Entire system is EMI/RFI protected M1500H: Customer provides shielding at cable termination
Shock:	1500G 0.5 ms half sine (Sensor)
Sensor Weight:	5.0g (Sensor without cable)
Cable:	Double Shield. Diameter: 3.6mm (0.142") Flex Life: 20 x 10 cycles @ 20mm bending radius

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