Built-in EMBee modems
- ZigBee transmission protocol is based on the Ember EM250 microprocessor
- It is fitted with 4 operating systems: ZigBee stack, OS Coordinator, OS Router, OS sleeping device
- Automatic reservation of network coordinator by a router in case of failure of the main coordinator
- Easy to integrate with a help of AT-Command interface
- Automatic networking after device initialization
- Excellent immunity of ZigBee network
- Total number of 65 000 operating devices in ZigBee network
- High security of data transmission from a coordinator to router (0.1% packet error rate)
- Automatic set up of EMBee network by a coordinator
- High speed of ZigBee network set up with EMBee modems; 15 min. (with 1000 modems in the same room)
- Automatic connection from a coordinator to routers
- Frequent optimization of routes by aggregation system of a coordinator
- Baude Rate 9 600 bit/s
- Network encryption available
- Excellent immunity to other 2.4 – 2.48 GHz devices
- Up to 16 000 networks in one building without interference
Table 1. EMB -250-002CI-001 Modem Features (Fig.1) 2 mW
Features
|
EMBee
|
Performance |
|
Transmission range in the city, building
|
up to 25m (operating in the mesh network)
|
Open-air transmission range
|
up to 100m
|
Maximum power (software adjusted)
|
2mW (3dBm)
|
Network speed
|
250 kb/s
|
Baud rate in mesh network
|
9600 bit/s
|
Command line interface speed (software adjusted)
|
1200-38400 bit/s
|
Sensitivity of a receiver
|
-89dBm
|
Energy Consumption |
|
Power supply
|
2.1 – 3.6 V
|
Transmit current consumption (average)
|
37mA (3.3V)
|
Wait/receive current consumption (average)
|
35mA (3.3 V)
|
Current consumption in sleep mode
|
1µA
|
General Characteristics |
|
Frequency range
|
2.4 – 2.48 GHz
|
Dimensions (mm)
|
24 x 47.6
|
Operating temperature range
|
-40 °C to +85 °C
|
Antenna type
|
integrated on board SMD ceramic antenna
|
Network Parameters and Security |
|
Operating network
|
mesh network:coordinator – all devices;
coordinator – device; device – coordinator; advanced network encryption
|
Number of channels
|
16
|
Number of operating devices
|
65 000
|
Transmission types |
via network (PAN ID with a 128-bit password), channel or command line identifier |
Table 2. EMB-250-100CI-002 Module Features (Fig.2) 100 mW
Features
|
EMBee
|
Performance |
|
Transmission range in the city, building
|
up to 100m ( operating in the mesh network)
|
Open-air transmission range
|
up to 1800m
|
Maximum power (software adjusted)
|
100 mW (20dBm)
|
Network speed
|
250 kb/s
|
Baud rate in mesh network
|
9600 bit/s
|
Command line interface speed (software adjusted)
|
1200-38200 bit/s
|
Sensitivity of a receiver
|
-94dBm
|
Energy Consumption
|
|
Power supply
|
2.1 – 3.6 V
|
Transmit current consumption (average)
|
165mA (3.3V)
|
Wait/receive current consumption (average)
|
60mA (3.3 V)
|
Current consumption in sleep mode
|
5µA
|
General Characteristics
|
|
Frequency range
|
2.4 – 2.48 GHz
|
Dimensions (mm)
|
24 x 47.6
|
Operating temperature range
|
-40 °C to +85 °C
|
Antenna type
|
integrated on board SMD ceramic antenna
|
Network Parameters and Security
|
|
Operating network
|
mesh network: coordinator – all devices;
coordinator – device; device – coordinator; advanced network encryption
|
Number of channels
|
16
|
Number of operating devices
|
65 000
|
Transmission types
|
via network (PAN ID with a 128-bit password), channel or command line identifier
|