BT 900 Uživatelský manuál stáhnout pdf (Strana 19)

BT900 Development Kit

Version 1.0

Embedded Wireless Solutions Support Center:

http://ews-support.lairdtech.com

www.lairdtech.com/wireless

Laird Technologies

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852-2268-6567 x026

Table 2: Vo vs. Temperature

Temperature (T)

Typical Vo

+80ºC

+924.7mV

+70ºC

+1041.4mV

+60ºC

+1158.1mV

+50ºC

+1274.8mV

+40ºC

+1391.5mV

+30ºC

+1508.2mV

+20ºC

+1624.9mV

+10ºC

+1741.6mV

+0ºC

+1858.2mV

-10ºC

+1975.0mV

-20ºC

+2091.7mV

-30ºC

+2208.4mV

6.2.3 Trim Potentiometer

The Trim Potentiometer is located in the middle of the development board to the right hand side of the coin cell

holder. It is labelled ‘Trim Pot’ on the silkscreen.

Figure 12: Trim Potentiometer

The Trim Potentiometer (VR9) can be disconnected from BT900 series module by micro-DIP switch CON14. Physical

micro-DIP switch body has text “ON” on the closed side.

The Trim Potentiometer (VR9) can be disconnected from supply rail by cutting the solder bridge SB2.

The Trim Potentiometer generates a voltage range of 0 V to ~0.9 V at C3 (CON14 pin4), see file

tpt.trimpot.test.sb

the

smart

BASIC sample application library on BT900 product pages at:

https://github.com/LairdCP/BT900-Applications

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