AEM 30-2500 AQ-1 Data Logging System - Manual (Page 6)

Page 6 10-2500 AQ1 Instructions RevD 102512.doc
SENSOR GROUND
The AQ1 Data Logger also has an internal low current sensor ground that is used for
sensors that require a signal ground. The corresponding wires in the harness are Black
and are labeled SIG GND.
RS 232
The RS232 serial input on the AQ1 Data Logger is configurable to read either a
standard NMEA GPS data stream or the data stream from an AEM EMS.
See “Using
the AQ1 Data Logger ” for more information on configuring the RS232 input. The AQ1
Data Logger harness comes with a male DB9 connector. When connecting to an AEM
EMS, the male DB9 connector plugs directly into the mating connector on the back of
the AEM EMS. The pinout for a GPS connection is shown below in Figure 5. AEM
recommends using one of the Garmin GPS models listed below.
Garmin GPS 18x PC
– 1 Hz model with DB9 connector and 12 volt power adapter
Garmin GPS18x 5Hz- 5 Hz OEM model, some wiring required.
CAN BUS 2
Not used with AQ1 Data Logger PN 30-2500
USB
The AQ1 Data Logger has two USB ports for easy connection and programming. The
AQ1 Data Logger receives low voltage power from the USB port, allowing users to
access the SD card and make configuration changes at all times, 12 volt power is not
necessary. The black remote mount USB port in the harness is designed for easy in
vehicle programming and data downloads. The USB port on the back of the enclosure
allows for easy bench top programming and data downloads when the module is
removed from the vehicle. See Figure 6 below.
Figure 5. Typical GPS Connection