I'm trying to use the EVAL-ADM2587EEBZ board, for using in RS-485 Half Duplex, RS-485 in Full Duplex and RS-422. But I only have problems with the RS-485 Half Duplex.
As I said I'm using the evaluation board EVAL-ADM2587EEBZ, but I've added some extra circuits to use the TX signal with an inverter transistor to enable and disable nRE and DE signals. This is the scheme:
This is my configuration:
SW1.1: OFF, SW1.2: ON, SW1.3: OFF and SW1.4: ON
SW2.1: OFF, SW2.2: OFF, SW1.4: ON and SW2.4: ON
Basically, my configuration is that:
But I've got some weird signal in TX mode:
Does anyone if this signals are right?