Martin LC 1140, User Manual

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18 LC 1140/2140 user manual
To set a panel to display a specific part of the video image, you set the x and y coordinates of the tile you
want it to display:
• An LC 1140 panel will display that 25 x 25 pixel tile
• An LC 2140 panel will display that 25 x 25 pixel tile plus the 25 x 25 pixel tile below it.
See Figure 12. Address setting is carried out on the panel’s DIP
switch. The DIP switch has 12 pins that are numbered from the
right:
• Pins 1 to 6 are used to select the tile position on the x axis.
• Pins 7 to 12 are used to select the tile position on the y axis.
Numbers are set on DIP switches in binary form (1 = 0 0 0 0 0 1 ,
2 = 0 0 0 0 1 0 , 3 = 0 0 0 0 1 1 , 4 = 0 0 0 1 0 0 , etc.). You set the
binary number for the x coordinate on pins 1 - 6 and set the binary
number for the y coordinate on pins 7 - 12.
For example, to set the x coordinate 17 and the y coordinate 14 on
a DIP switch, you must first convert these coordinates to binary
numbers (17 =
0 1 0 0 0 1
, 14 =
0 0 1 1 1 0
), then set the dip switch
pins as shown in Figure 13.
x coordinate y coordinate
Figure 12: DIP switch functions
1-6 1-6 7-12 7-12
ON ON
OFF OFF
12 12 1 1
ON ON
OFF OFF
12 12 1 1
1 1 0 0 1 1 1 1 0 0 0 1 1 0 0 1 1
PIN 12 11 10 9 8 7 6 5 4 3 2 1
Setting OFF OFF ON ON ON OFF OFF ON OFF OFF OFF ON
0 0 1 1 1 0 0 1 0 0 0 1
x coordinate y coordinate
Figure 13: Example DIP switch settings