Users Manual

Operational description
RF-module
This document is the sole property of Tyro Products B.V.
Any reproduction in part or as a whole without the written permission of Tyro Products B.V. and/or the author is prohibited.
Page 5 of 9
3 List of requirements
3.1 General requirements:
- Class 1 radio
- Compact size (25.40x23.81mm)
- A 434 / 868MHz PCB version with mounting variants for 434MHz and 868MHz.
- A separate PCB version for 915MHz.
- 433MHz and 868MHz must comply with EN300-220 CAT.1
- 915MHz must comply with FCC / IC (Canada)
- 5 sets can work side by side without problems.
- Response time <100mS (number of TX packets> 10 per second)
- Transmit power <= 50mW (17dBm)
- Reception sensitivity higher than -120dB
- 5 byte data during the teaching (pairing) process.
- Adjustable payload up to 24 bytes
- Automatic package handling with CRC
- Low power consumption mode because of battery powered system
- Bi-directional communication (half duplex)
- On-board controller that controls all RF communication,
- Communication between RF module and our controller via SPI (I2C is an option).
- Adjustable configuration; RF power, RF packet lengths, RF frequency (only at 434MHz),
power saving options
- Possibility for firmware updates
- Source HW and SW incl. Commentary and documentation and development tools for Tyro
3.2 Module specific requirements
Requirement
434MHz
868MHz
915MHz
Class
1
1
NA
RF standard
ETSI (EU)
ETSI (EU)
FCC (US)
Required range in open field
1000m
700m
700m
Spread spectrum required
No
Yes
Yes
Since 915MHz uses spread spectrum over 50 channels.
434MHz and 868MHz only hop over 8 channels. As a result, it is not possible to make enough different patterns to
minimize the chance that systems will continuously disturb each other. For this it is therefore necessary that a
system can recognize and avoid another system
In addition, 434MHz also has the option to be set to a fixed frequency.
3.3 Goal
3 modules (433MHz, 868MHz, 915MHz) will comply to the standards above.
The same RF-chipset will be used for all three variants.