Microsens MS400230 - Manual (Page 8)

7
Troubles shooting
 Verify that you are using the right power adapter (DC 9V, 0.7A).
Please don’t use the power adapter with DC output higher than 9V, or
it might burn this converter down.
 Check the configuration of the DIP-switch. It must be set in the same
operation mode with the link partner.
 Select the proper Fiber cable to construct your network. The
single-mode converter must use single-mode fiber cable. Please
check that you are using the right cable.