LS SERIES SERVICE MANUAL
ISSUE 4.0 EXTENSION MEASURING SYSTEM 3
The circuit is designed for use with an extensometer that uses one or two 5V digital encoders. A
5V supply is available from terminal T14 on the PCB and the ground is available on terminal T7.
The encoder outputs are connected to terminals T10 and T11 and are fed to the Main PCB
where they are buffered by IC17 then counted by the internal up/down counter inside the
microprocessor IC21 and converted to an extension reading.
If two encoders are used to give a differential extension, the second encoder output is
connected to terminals T12 and T13.
See diagnostic section 11 for details.
To Next Page
Loading...
