How to set spectra I, and spectra II to termination mode without toggle switch or with toggle switch.
Daisy chain configuration requires to terminate the RS422 end of line.
- To terminate RS422 of a spectra that does not feature a toggle switch: Move JP2 to Left pin and center pin. It should read 120 ohms on RX+/RX- of BB5DOORASSY.
- By default all spectra I,and II receiver boards are configured in the un-terminated RS422 position.
Note: Termination requires to open back plate by removal of 3 Philipp screws on dome drive to view JP2 on the receiver PCB assembly.
- Here is how to terminate RS422 for the spectra I, II with toggle switch to left which will be termination. click to see manual page 3 C1489M-E (01/01).