Masts D Select either 'LocoNet mode' (a Serial command - Closed/Thrown plus a Mast #) OR 'Mast mode' (a Mast Address plus its Signal Aspect). All commands are entered as their actual Address numbers. For example to respond to LT9 Closed enter Command as 9 C. To use Bi-polar LEDs check the box between any paired color entry. Pairs must use adjacent output lines, either Lunar/Red, or Yellow/Green. To set the Bi-polar hue, adjust the individual brightnesses of the paired LEDs. Either Bi-polar color used by itself does not require a check. Aspect# Mode Command Lamp A Phase/Flash Bi-Polar Lamp B Phase/Flash Lamp C Phase/Flash Bi-Polar Lamp D Phase/Flash Lighting Effects Masts D Type