ٍET3-4000P(3 IO Transmiter)

         I/O  Discription:

          (ETx-P can directly connect to prop to water resistance sensing and in ET3-P can directly connect   to analoge sensor like ultrasonic distance sensor.)

ET-4000P: one 0-10v analoge input / two prop input with water resistance sensivity/ active low / 5 uA current consumption /high level 3v , low level 0.5v

 

Power Discription:

3 Internal NiCd rechargeable battery for energy storing, and a internal modern automatic PWM charger so can charge batteries in a possible little time with many of battery parameters scanning. A solar cell input terminal for external power source for charging power consumption.

Power supply for sensors (DC/DC):

 

Maximum battery voltage is 4.5 v in full charge , so you cannot use a standard industrial range sensors with this low voltage . for solving this problem ET  has a DC/DC converter to prepare Radio modem power and sensors. It has 2 DC/DC so one for radio and one with 20V output 50mA for external ultrasonic distance sensor.

            Hi Industrial Protection case : IP66

Radio Discriptions:

ETx-P is equipped with ET-LM12 Low Power Data Radio Module, Features of ET-LM12 Low Power Data RF Module

1-low power transmission with the transmission power of 27dBm (500mW). (1W IS AVAILIBALE IN ORDER)

2-ISM frequency band, requiring on application of frequency point.
Carrier frequency of 433MHz, also capable of providing 450~470MHz carrier frequency.
3-High anti-interference and low BER(Bit error Rate) Based on the GFSK modulation mode, the high-efficiency forward error correction channel encoding technology is used to enhance data’s resistance to both burst interference and random interference and the actual bit error rate of 10^-5 ~ 10^-6 can be achieved when channel bit error rate is 10^-2.

 

4-Long transmission distance Within the range of visibility, the reliable transmission distance is >4500m (6000m FOR 1 W) when the height is greater than 2m (BER=10^-3@1200bps).

Channel No.	Frequency	Channel No.	Frequency
CBA=000(0)	430.2000 MHz	CBA=100(4)	434.6940 MHz
CBA=001(1)	431.4288 MHz	CBA=101(5)	434.2332 MHz
CBA=010(2)	431.7360 MHz	CBA=110(6)	433.1580 MHz
CBA=011(3)	430.5072 MHz	CBA=111(7)	433.9260MHz

 

we can do it from 315 MHz to 928