User`s guide

MP-70/50 Scoreboard Controller User’s Guide
128
Selecting channels
In SEL mode, you must select the same channel on both the MP-70/50
and its receiving devices (scoreboards and timers).
Valid channel numbers are 0 to 15. Most of the MP-70/50 controls manu-
factured by Fair-Play are set up at the factory to use channel 7 to control
outdoor scoreboards, and channel 3 to control indoor scoreboards. You
may keep these selections, or change them, as you prefer.
On the receiving device, the CHANNEL SELECTOR SWITCH is a 16-posi-
tion rotary switch with a small arrow indicating its position. The image
below shows this switch, which is located on the receiver card on your
scoreboard. This switch is used to select the SEL mode radio channel.
Channels 10 through 15 on M-70/50 correspond to the letters A through
F on the
CHANNEL SWITCH.
Note: Channels 0, 14, and 15 disable the radio trans-
mitter on the MP-70/50 when the radio transmitter is
in SEL mode. Likewise, the receiver located in a wireless
scoreboard is disabled when the channel switch is set
to 0, E or F.