Matrix Orbital GLK240128-25 Legacy - Manual (Page 16)

Table 1: Default Values
Contrast 128
Backlight 255
Baud Rate 19.2 kbps
I 2 C Slave Address 0x50
Data Lock False
RS232AutoTransmitData True
NOTE The display module will revert back to the old settings once turned off, unless the
settings are saved.
2.6 Filesystem Lock Jumper
The Filesystem Lock Jumper allows you to lock the filesystem on the GLK240128-25 so that no fonts or
bitmaps can be either written or deleted from the on board memory. This feature is useful in order to protect
data integrity of production units, if protection of other settings is required see Section 12.
To lock the filesystem, solder a zero ohm resistor or use a solder jumper on the Filesystem Lock Jumper
pictured in figure 18 below, with a lock symbol becide it.
Figure 18: Filesystem Lock Jumper
Matrix Orbital GLK240128-25 11