There are three ways of setting the IP Address on the TMC-1 as follows
I have implemented DHCP on the TMC-1 as a one shot as I believe that in a studio setup it is better to use fixed ip addresses. When you enable DHCP on the TMC-1 the first number only will change to 00 to indicate that DHCP is active. If a new IP Address is allocated by the DHCP sever the display will update almost immediately, if there is no DHCP server present the IP address will revert to the original IP Address after about 5 seconds.
Recently a customer asked why they could only see the first number flicker when using DHCP to set the IP address of the TMC-1. This occurs when the DHCP Server is happy with the IP Address requested by the TMC-1. On the video below I have deliberately set the TMC-1 to a invalid IP address.