Hardware Reference Manual
MCU500 Mobile Locator/Control Unit
100-00191
Revision 1.01
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radio transceiver. This port can be configured for operation as RS232, TTL logic
level, inverted TTL logic or Nokia MBUS using jumper JP3.
With the MCU500 unboxed, and orientated so that the GPS connector is on the
right-hand side, JP3 can be found running horizontally in the bottom left-hand
corner of the PCB.
Voltage
Level
JP3
RS232
TTL
Inverted
TTL
Nokia
MBus
6.2 Analogue input/mode selection
For MCU500 units that have been manufactured with an analogue input
capability, JP4 configures whether input 2 (Ppn 5 of the Molex connector) is a
standard digital input, or an analogue input.
With the MCU500 unboxed, and orientated so that the GPS connector is on the
right-hand side, JP4 can be found running horizontally just to the left of the Molex
connector.
Input 2
JP4
Analogue
Digital
6.3 EPROM/FLASH size and type