Cascading DC Power, LED Operation | IMC Networks 9830, 9835, 9820

Cascading DC Power

If installing multiple IE–ModeConverters on a DIN rail, you can use one DC input source and then cascade from one DC terminal block to the next, until reaching the maximum electrical current available.

LED Operation

The IE–ModeConverter contains four status LED indicators. Each LED is dual color and has three states: off, red, or green. A loss of signal on one SFP causes the TX of the other SFP to turn off.

This action does not activate the red TX Fault LED.

LED		Color or State
	Red	OFF	Green
	Card does not pass the	Unit does not have	Power is applied to the card.
PWR	self-test.	power.	All internal self-test functions
PWR

			must pass before the PWR
			LED is green.
SD I	LED transmitter has an	No active fault on	Valid signal is detected by
SD 2	active fault.	transmitter.	the SFP and LED transmitter
			is not in fault.
		LOS indication on
		receiver.
MSA LEDs	One or both SFPs are	N/A	Indicates that both SFPs with
	not installed or not		the same speed are securely
	detected. The TX		installed.
	inhibit must not be
	active if a SFP is
	missing.* Or, both
	SFPs are installed, but
	their speed settings are
	different. This
	condition disables both
	SFPs.

*To help in troubleshooting, the Link Loss (LL) feature is always ON. That is, if a LOS is detected on an incoming SFP port, the Optical transmitter on the other SFP port is turned OFF. This provides a Link Loss carry forward function to alert the device downstream of the existing problem. This function is "ON" in both directions at the same time. The LL function is inhibited if either SFP is not installed.