GV21001e_e_A5.doc / Jul-07
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1.3.
Encoder signal switcher
In1
Control 1
LO = In1, Hi = In2
Control 2
LO = In1, HI = In2
In2
Out1
Out2
RS422 or
HTL 10-30V
HTL 10-30V
or RS422
RS422 or
HTL 10-30V
HTL 10-30V
or RS422
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
A, /A, B, /B, Z, /Z
Both inputs can be individually set to either TTL/RS422 standard with A, /A, B, /B, Z, /Z
channels, or to HTL 10-30 V standard with A, B, Z channels
The output standard can again be selected individually for each output.
The outputs provide always all signals including the inverted channels, even when no inverted
signals are applied to the input.
Inputs Control1 and Control2 select the signal ways:
LOW: The corresponding output is connected to input 1
HIGH: The corresponding output is connected to input 2
•
With input setting TTL/RS422, the inputs will accept RS422 signals and TTL signals
and also HTL signals with 10 – 30 volts level, always provided that every signal is
accompanied by the appropriate inverted signal (Symmetric differential input)
•
Operation with asymmetric signals (single ended with no inverted signal) requires to
set the input to HTL and to apply 10-30 volts level to the A, B, Z inputs.
Where you like to apply single-ended signals with 5 volts TTL level, please ask for a
special version which is available on request.