GEM Module Hardware Integration Guide
Version 0.3
Wahoo Fitness
6
90 West Wieuca Road, Suite 110
Atlanta, GA 30342
www.wahoofitness.com
1-‐877-‐978-‐1112
Specification
Specification Summary – Fitness Machine Software
Category
Feature
Implementation
RF
Bluetooth
ANT+
Frequency
Maximum Transmit Power
Minimum Transmit Power
Receive Sensitivity
Range
4.1 Single Mode Peripheral
Broadcast
2.402-‐2.480 GHz
+4dBm
-‐20dBm
-‐93dBm Bluetooth mode
-‐91dBm Ant+ mode
up to 100m line of sight
Peripherals
UART Host Interface
GPIO
TX, RX 9600bps n,8,1
Link Indicator
Pairing Button
FW Upgrade
Wahoo Firmware
Over the air
Via JTAG interface
Control Protocol
CSAFE
CSAFE Command Interface
Supply Voltage
1.8 – 3.6V
Power Consumption
TBD
Physical
12.7mm x 19.05mm
Environmental
-‐40 to +85C
Approvals
FCC, IC, CE, Bluetooth EPL
