Matrix Orbital GLC24064 - Manual (Page 12)

NOTE The connector provided does not allow access to the middle two pins which are
used for I
2 C communications. If this functionality is required, Matrix Orbital suggests
wiring a suitable connector.
2.1.3 Wide Voltage with Efficient Switching Power Supply (VPT)
Power is applied to the white or brown four pin SIP connector as follows;
Table 3: Connector Pinout
Pin 4 Gnd
Pin 3 SDA (I 2 C data) / Rx
Pin 2 SCL (I 2 C clock) / Tx
Pin 1 +7 - 30V DC
If the sole data source is via RS-232, the data input is via the DB-9 connector. In this case pins 2 and 3
are not used.
NOTE Do not use this cable unless the display module has the "Wide voltage range",
option (option V). Use of the 12 volt power cable with 5 volt modules will damage the
module.
The 12 volt power cable is designed for use with wide voltage range display modules mounted in a PC.
Wiring required for the 12 volt power connector is shown in the Figure below.
Figure 9: Wiring for 12 Volt Modules
Matrix Orbital can supply an adapter cable designed for use with the display module when it’s installed
in a PC, if the user would like to modify cable wiring.
Matrix Orbital GLC24064 8