Salutron HRM8700 User Manual

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FCC ID:N7P-HRM8700

FCC ID:N7P-HRM8700FCC ID:N7P-HRM8700FCC ID:N7P-HRM8700FCC ID:N7P-HRM8700

IC:10274A-HRM8700

IC:10274A-HRM8700IC:10274A-HRM8700IC:10274A-HRM8700IC:10274A-HRM8700

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HRM8700

Combo Heart Rate Module

User Guide

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Revision History:

CONFIDENTIAL

Revision

0.1 07/23/17 Preliminary Draft BC

Release

date

Description B

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Contents

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General Description .............................................................................................................................. 4

Features: ............................................................................................................................................. 4

Physical Dimensions: Inches (mm) ......................................................................................................... 5

Connection Diagram: (Typical) .............................................................................................................. 6

Electrical Characteristics: ...................................................................................................................... 7

ECG Measurement: ............................................................................................................................... 7

5KHZ Wireless Specification: ................................................................................................................. 7

BLE/ANT+ Specification: ....................................................................................................................... 7

1. UART COMMUNICATION PROTOCOL: ................................................................................................. 9

1.2.Block Diagram .......................................................................................................................................... 9

2. OPERATION ..................................................................................................................................... 9

2.1. Description............................................................................................................................................... 9

2.2. UART Specification .................................................................................................................................. 9

2.3. Equipment Assomptions ........................................................................................................................ 10

2.4. HRM8700 default configuration ............................................................................................................. 10

2.5. Equipment and HRM8700 Operations ................................................................................................... 11

2.6. HRM8700 OTA. ...................................................................................................................................... 12

3. UART COMMUNICATION PROTOCOL PACKETS ................................................................................... 13

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3.1. Packets .................................................................................................................................................. 13

3.2. Example of Sending Packets Equipment Console .................................................................................. 13

3.3. Example of Sending Packet to HRM8700 .............................................................................................. 14

Appendix A : Grounding and ESD Recommendations .............................................................................. 15

Appendix B: HRM8700 Placement Guideline ........................................................................................... 18

FCC/IC statement ................................................................................................................................ 20

FCC statement .............................................................................................................................................. 20

IC statement ................................................................................................................................................. 20

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Model HRM8700

Wireless Heart Rate Monitor Specifications

General Description

 The Model HRM8700 is a wireless receiver and

Handgrip Heart Rate Monitor Combo. It is designed to manage and support ECG contact heart rate and the reception of wireless heart rate data from BLE, ANT+, standard 5kHz chest straps or wearable heart rate transmitters or devices.

 Once enabled by the Console, the HRM8700

actively scans for local HR transmitter signals, and supports a user selection/pairing protocol processed by the Console.

 Once a HR transmitter is selected/paired, the

HRM8700 streams the user heart rate data until the end of the workout session, then ‘unpairs’.

 The HRM8700 contact heart rate monitor can

quickly and accurately measure the heart rate from an ECG signal under noisy environments.

 The HRM8700 simultaneously processes

Handgrip Heart Rate and Wireless Heart Rate data. Either can be specified as the priority heart rate.

Features:

 Direct connection to equipment; no phone

device or app ‘middleman’

 Support ECG contact heart rate  Supports multiple inbound sources for HR:

BLE, ANT+, 5kHz

 Automatic proximity sensing to minimizing

interference from competing wireless HR signals

 Console controllable proximity commands

allowing ‘customization’ of the scanning proximity during integration development of the HRM8700 into the console

 Simplified user pairing routine  Future-proof: OTA updateable to support

future features (based on console passthrough, if available)

 Interface: UART, custom command protocol

The HRM8700 series combo heart rate module delivers high performance ECG contact and telemetry heart rate monitoring - for both commercial/club and home cardio equipment applications.

CONFIDENTIAL

The HRM8700 communicates and passes the heart rate data from the heart rate monitor to the equipment console through proprietary UART protocol.

The HRM8700 series offers a special proximity pairing feature that allows the equipment console to discover only the HR transmitting devices in close proximity. This feature minimizes unwanted devices and speeds up the pairing process, especially useful in health club environments where there may be multiple BLE or ANT+ devices present. After successful pairing, the reception distance will automatically increase to maximum range.

The HRM8700 receiver also supports legacy Spulse contact heart rate and 5kHz chest strap data reception. It utilizes Salutron’s proprietary Digital Crosstalk Control and Digital Noise Filter algorithms that can filter out unwanted competing chest strap signals. This supports better wireless reception and reduce 5kHz noise from potentially unfriendly high ‘noise’ environments coming from power systems and console electronics.

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o ECG handgrip contact heart rate with R-R

interval output (Optional)

o BLE smart and ANT+ data reception o Standard 5.3kHz chest strap, coded and un-

coded signal reception

o Proximity pairing feature. o UART communication protocol o Stationary Bike FE-C support o 3~6V operation. o RoHS compliant.

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Physical Dimensions: Inches (mm)

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Figure1:Physicaldimensions

The physical properties of the HRM8700 allow for easy integration in your existing equipment. See above picture for the physical dimensions of the board. Preferred headers may be specified, with Salutron’s consultation. Because of its small size and weight, the board can be fastened using adhesive tape, or #2 screws.

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Connection Diagram: (Typical)

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Figure 2: Connection Diagram

TYPE PIN No. DESCRIPTION

HD1 – Ground Strap 1 Earth Ground

1 RA, right primary sensor

HD2 – Right Sensor

HD3 – Left Sensor

J1 – Main

2 LL, common sensor 3 Shield 1 LA, left primary sensor 2 LL, common sensor 3 Shield 1 GND 2 +5V 3 TXD 4 RXD

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Electrical Characteristics:

Symbol Parameter Conditions Min. Typ. Max. Units

VS Supply voltage - 3 5 6 V

IS Supply current Vcc = 5V 5.2 7.5 10.5 mA

To Operating Temperature

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-10

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60

°C

Ts

Storage Temperature

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-40

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85

°C

ECG Measurement:

Symbol Parameter Conditions Min. Typ. Max. Units

HR Heart EC Simulator 30 - 240 BPM

CHR sensor ECG sensitivity 0.1 - - mV

Ta Acquisition Time Bike/treadmill 3 5 10* seconds

*Among the contributing factors resulting in long HR acquisition are motion induced physiological artifact, electrical disturbance from control electronics, transient motor drive loading, and skin contamination via hand cream, cosmetics, and dust,

5KHZ Wireless Specification:

Parameter Conditions Min. Typ. Max. Units

5KHZ Wireless reception range Noise free environment

5KHZ Wireless reception frequency

T= 25ºC, Vcc =5.0V

31 80

4.8 5.3 5.9 KHz

35 90

39 100

Inches cm

Heart rate detection Output format UART Protocol

T= 25ºC, Vcc =5.0V

30 - 240 BPM

BLE/ANT+ Specification:

Minimum Typical Maximum Unit HR Measurement

Range 30 - 240 beats per minute Frequency 2402 - 2480 MHz Center Frequency - 2440 - MHZ Channel Bandwidth - - 2 MHZ

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CONFIDENTIAL

Low speed Crystal Freq - 32.768 - KHZ

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Feet

Meter

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High speed Crystal Freq - 32 - MHZ Channel Spacing - 2 - MHZ No. of channels used - - 40 Channels Modulation GFSK Output power -20 - 4 dBm Open Air range - - 10 Meter Power Consumption Standby mode - 5 - mA Operation Modes

Device Searching Mode - 10 10.5 mA Heart rate Data transfer - 5 5.5 mA

2.4GHZ Transmission distance (line of sight)*

65 20

Vdd=5.0V @ 25°C

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*Note:thenatureofphysicalobstructionsand/or2.4GHzradiointerferenceinthesurroundingarea couldaffectthereceptionandtransmissionrange.

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Salutron HRM8700 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual