The CBW waits for the Don't Tare input to go away, then it waits for two seconds, then it waits for 4 samples from the A/D board for the CONWA. If there are a many boards in the CBW it will take longer to talk to the board 4 times and get those samples.
You can see how long it takes for the 4 samples by monitoring the serial link light on the Conwa A/D board. Each sample is a blink of the serial link LED.


(per JF on 07-03-08 GLL)