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| | | Electronics Options | | |
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| | | input power +5 VDC @100 mAmax. square wave output output code l Quadrature square waves at 1, 2, 5, 10 or 16 times the line count on the disc. On all channels: EIA/RS-422 balanced differential line driver, protected to survive an extended-duration short circuit across its output. May be used single-ended for TTL-compatible inputs. Index is %-cycle wide, gated with the high states of channels A and B. output waveforms (CW rotation shown) | | |
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| | | Channel A | | |
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| | | Channel/A | | |
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| | | Channel B | | |
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| | | Channel/B | | |
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| | | Index _| | 1/4-cycle gated | | |
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| | | /Index | | |
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| | | buffered sinusoid output options output code b should be ordered when the HR2AHigh Resolution Interpolator will be used. (Consult factory for availability of line counts that will work with this option.) The output device is an op-amp referenced to (50% ±3%) x Vcc. Typical signal roll-off at 100 kHz <3 dB. Signals are single-ended. Signal values at 1 kHz with 4.7 kQ load to common (at20°C): | | |
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| | | | | | | | | | | Peak-to-peak signal amplitudes, SIN and COS: | 1.0 ± 0.1 V | | | | Amplitude ratio, min channel to max channel: | 0.9 to 1.0 | | | | Peak-to-peak signal amplitude, INDEX: | 0.75 V | | | | Index width @Vref: | 300° ± 45° | | | | Index peak occurs where Chan A+ = Chan B+ (135°) | | | | Channel B (cos) leads Channel A (sin) for CW rotation | | _1 | | | | | | | | | | |
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| | | output code m should be selected for all other applications requiring analog output. The output device is an op-amp referenced to (50% ±3%) x Vcc. Typical signal roll-off at 100 kHz < 3 dB. SIN, COS and INDEX are complemented. Signal values at 1 kHz with 4.7 kQ load to common (at 20°C): | | |
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| | | | | | | | | | Peak-to-peak signal amplitudes, SIN and COS: | 1.0 ± 0.1 V | | | | Amplitude ratio, min channel to max channel: | 0.9 to 1.0 | | | | Peak-to-peak signal amplitude, INDEX: | 0.75 V | | | | Index width @Vref: | 300° ± 45° | | | | Index peak occurs where Chan A+ = Chan B+ (135°) | | | | Channel A (sin) leads Channel B (cos) for CW rotation (standard for all R13X except Output Code B). | | | | | | | | | |
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| | | extended resolution The R137 offers resolution up to 57,600 cycles/rev (up to 230,400 counts/rev after user's 4X quadrature decode) with internal electronics. If finer resolution is required (up to 288,000 counts/rev), the HR2A external electronics package can be used with either encoder. The HR2Acan also provide interpolation factors other than 2, 5 or 10, which are available internally in the R137. The encoder must be ordered with output code B and connector code Q. (See separate HR2A data sheet for details). | | |
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| | | 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 | | |
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