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| Absolute shaft encoder |
| Shaft encoder that transmits unique coded data for each increment. |
| AC [~] |
| Alternating current |
| Accuracy |
| The difference between the actual and measured position. |
| Actual value |
| see count |
| Alarm signal |
| Serves to monitor the shaft encoder for malfunctions, such as glass breakage, fouling, short circuit, short circuit of signal line, and supply voltage too low. |
| Amplitude regulation |
| Current or voltage amplitude is constant through regulation |
| Analogue signal |
| A signal whose level alters continuously. |
| ASIC |
| Application specific integrated circuit |
| Auto-reset |
| see reset modes; automatic reset |
| Automatic repetition |
| see reset modes; automatic reset |
| Axial loading |
| Maximum load on the shaft encoders shaft in the axial direction |