A

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

Automatic repetition
see reset modes; automatic reset

Auto-reset
see reset modes; automatic reset

Axial loading
Maximum load on the shaft encoder‘s shaft in the axial direction