User's Manual

Preliminary
Dynastream Innovations Inc.
Company Confidential
TITLE: FIT1/e USER MANUAL Rev 0.A
DOCUMENT NO: D00001279 SHEET: 6 of 9
2) receives watch files, and
3) begins broadcasting FE data to the watch
FINISHED – This state applies when the user
stops a workout session, either to pause or to
finish.
The FIT1e remains paired. If there is a watch
paired, the FIT1e sends a message to stop the
watch’s chronometer.
4 FIT1/E INTERFACE
4.1 Electrical Interface
0.050” (1.27mm) dual row 12 Pin header, with pinout as follows:
FIT1 and FIT1e operating voltage limits: 3.0 to 10.0 V
Baud rate adjustable: 9600, 19,200 & 57,600 baud rates supported.
4.2 Mechanical Interface and OEM Installation Guidelines
For the FIT1/e to operate correctly it is important to note some restrictions for mounting the module:
1. Do not place metallic objects in contact with the Antenna, Shield, EM coil (on FIT1e) or any
other components on the PCB, with the exception of the electrical connection to the header and
fastening screws. See Figure 3 for component identification.
2. Reducing the quantity and volume of metallic objects in the vicinity of the FIT1/e will allow for
improved RF and EM (on FIT1e) performance.
3. The use of non-metallic paint is required for all enclosures for the FIT1/e. Using metallic paint
will severely degrade RF and EM (on FIT1e) performance, affecting pairing ability and module
communication.
Pi
n
Functio
n
In/Ou
t
1 Heart rate pulse Out
2 FIT1_Baud0 In
3 VBATT Power
4 GND Ground
5 FIT1_RXD In (FE Æ FIT1)
6 FIT1_Baud1 In
7 FIT1_TXD Out (FIT1 Æ FE)
8 FIT1_RTS Out (FIT1 Æ FE)
9 FIT1_RST
¯
¯¯ In, active low
10 Reserved Out
11
T
EST (Tie to GND)
12 Reserved