Vpp Measuring Systems With Endat Interface; Vpp Measuring Systems With Ssi Interface And 5V Supply Voltage - HEIDENHAIN PWM 8 Operating Instructions Manual

The interface board replaces the 1Vpp Zn/Z1 adapter Id.No. 324566-01 (part of the cable adapter set for
PWM8, Id.No. 341338-01). All encoder supply types of PWM8 are possible (INTERNAL, EXTERNAL,
EXTERNAL FROM CUSTOMER). An adapter cable is required to connect 1Vpp measuring systems with
Zn/Z1 track with different wirings to this interface board; by means of this cable the encoder signals can be
tapped directly at the measuring system. (see section: HEIDENHAIN output cable with 14-pin PCB connector)
Note:
The reference pulse of this measuring system is derived from the AB track. The CD track is not directly
connected to the reference signal!

15.1.2 1 Vpp measuring systems with EnDat interface

With this setting of the interface board, 1Vpp measuring systems with EnDat or SSI interface can be operated
via PWM8 in feed-through mode. All encoder supply types of PWM8 are possible: INTERNAL, EXTERNAL,
EXTERNAL FROM CUSTOMER. The encoder is powered with 5V (selectable in the EXPERT MODE). The
analog 1Vpp signals can be fed through the PWM8 to an oscilloscope. The remaining functions of PWM8 can
be used for the analog 1Vpp signals. Please consider that EnDat encoders do not have a reference pulse.
With these encoders the internal counter of PWM8 cannot be started by reference pulse; display of the
reference pulse is not possible!
The digital signals of the EnDat interface can also be switched to the BNC sockets. Further evaluations of
the EnDat or SSI signals can not be made with this interface board.
Note:
If digital and analog signals are switched to the BNC sockets simultaneously, crosstalking of the digital signals
to the analog signals is to be expected. The higher the band width of the oscilloscope connected, the more
obviously the crosstalking effect can be seen.
With the encoder output (OUT) of the interface board this effect does not occur.

15.1.3 1 Vpp measuring systems with SSI interface and 5V supply voltage

Same functions as 1 Vpp measuring systems with EnDat interface
(see section: 1 Vpp measuring systems with EnDat interface)
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