AEM CD-5 Manual

10
Status LED
There is a status LED located on the top of the VDM module that gives an indication of its operating status,
specifically the quality of the current GPS signal:
LED
Description
OFF
The device is not powered
FLASHING RED
No valid GPS fix
RED
Valid fix, zero satellites in view
FLASHING GREEN
Less than 4 satellites in view
GREEN
4 or greater satellites in view
OTHER
Please contact AEM Support
Channels / Data
GPS
The VDM utilizes an internal 5Hz GPS/GLONASS receiver with a matching external active antenna. Faster
time to fix, and better global coverage is afforded by the support of both the GPS and GLONASS
constellations. The module is designed with an internal super capacitor that will retain the last known satellite
position (ephemeris) while power is disconnected from the VDM for up to 2.5 hours. This will allow for a very
fast time to fix (<1 sec typ) once the device is turned on again; if power is removed for greater than the 2.5
hours then the time to fix will increase. The capacitor is automatically recharged and never needs to be
replaced such as is the case with a more traditional battery.
The following GPS channels are output on AEMnet for logging on your Infinity ECU or other device:
Channel Name
Notes
GPS Latitude [deg]
+ = North, - = South
GPS Longitude [deg]
+ = East, - = West
GPS Speed [mph]
Speed
GPS Altitude [ft]
Above Mean Sea Level (MSL)
GPS Course [deg]
Course over ground, NOT heading
GPS Satellite Count
"Visible" number of satellites
GPS Valid
1 = Valid Fix, 0 = No Fix
GPS Year
UTC Time
GPS Month
UTC Time
GPS Day
UTC Time
GPS Hours
UTC Time
GPS Minutes
UTC Time
GPS Seconds
UTC Time
Accelerometer / Gyroscope
The following accelerations and yaw rate channels are output on AEMnet for logging on your Infinity ECU or
other device:

AEM CD-5 Specifications

General

Brand	AEM
Model	CD-5
Category	Monitor
Language	English