AMB8425-M-EV manual V1.1
Page 6 of 12
Last update: 14/08/2009
If the meter is not attached and the bridge is not set, the module will not receive any supply
voltage. However, the power LED may be active, as it is connected upstream of the current
measurement bridge in order not to distort the module's power consumption.
Parts connected to the module, such as LEDs, can be separated from the module via JP8 and
JP9.
Power can also be supplied to the module via JP6 (2.85 V – 3.6 V). However, in this case the
RS232 converter will not be powered.
3.3 Interfaces
3.3.1 UART / RS232
The UART of the module can be connected to the RS232 converter by setting the bridge to
JP12; in this case, it is available as RS232 at the sub-D-9 jack. In this way, the module can be
connected directly to a PC.
Figure 3: RS232
RS232 converter
JP12
Pin 1
