HEIDENHAIN PWM 8 - Manual (Page 64)

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15. Description of the interface board, 1 Vpp, absolute
(with Zn/Z1-track; EnDat/SSI; SSI-programmable)
15.1 General information
This 1Vpp interface board has been designed for testing measuring systems with Zn/Z1 1Vpp output signals,
EnDat/SSI and programmable SSI interfaces.
The interface board features 17-pin HEIDENHAIN flange sockets.
The measuring system can be selected via the parameter P9 in the EXPERT MODE of PWM8.
15.1.1 1 Vpp measuring systems with Zn/Z1 track
e.g. ERN 1185, ERN 138x (with commutating track)
The interface board permits switching between the two output-signal tracks (AB and CD). The encoder signals
can be fed through the PWM8 to an oscilloscope. For the tracks AB and CD switchable terminating resistors
are provided on the interface board. The remaining functions of PWM8 can also be used for the CD track
provided that the lower cutoff frequencies are observed. (Commutating track CD = 1 signal period per
revolution!)
Note:
Do not exceed the mechanical shaft speed!