HEIDENHAIN PWM 8 - Manual (Page 20)

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4.5 PWM 8 MODE: MEASURE AMPLITUDES
In this mode the vertices of the amplitudes of the incremental signals 1 and 2 are measured. The result
always refers to an individual signal period. With sinusoidal encoder signals (11µApp and 1Vpp) the positive
and the negative vertices are measured versus U
0 , with square-wave encoder signals (TTL and HTL) low
and high level are measured versus 0V.
In the table below the maximum measuring ranges are listed for the different interface boards:
Interface board: 11µApp 1Vpp TTL HTL
Maximum measuring range 33 µApp 1.66 Vpp low: 0 – 2.5 V
high: 2.5 – 7.5 V low: 0 – 7.5 V
high: 7.5 – 22.5 V
If the EXPERT MODE is active (see section 5) and the 11 µApp or 1Vpp interface board used, the encoder
supply voltage can be set in the mode MEASURE AMPLITUDES:
For this purpose the standard soft-key row has been expanded by the soft key .
Soft key to switch to setting of encoder voltage
After pressing the soft key
the encoder voltage can be set:
Soft key to switch back to the standard
soft-key row
Display of encoder voltage
Soft keys to set the encoder voltage