TSic LABkit™ User Manual and Technical Description
TSic
TM
LABkit, Rev.2.4, Oct. 18, 2005
Page 10 of 18
© ZMD AG & IST AG, 2005
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior
written consent of the copyright owner.
5 TSic LABkit™ Hardware
The TSic LABkit™ temperature measurement system uses a PIC 16F628 to receive the digital measurement
values of up to 4 connected temperature sensors (TSic™). The PIC 16F628 converts the digital values into a
serial data string. This data string is transmitted to a serial-USB-converter FTDI232BL. The circuitry is USB 2.0
compatible. Data transmission to the PC is accomplished with a “virtual COM-Port driver,” which emulates a
standard COM interface to transfer the data to the application software.
The low noise design is achieved by low pass filters for all inputs and outputs. The USB connection is decoupled
with an LC filter. Diodes at the sensor inputs provide ESD protection.
5.1
USB-Hardware Configuration
The jumpers on the PCB control the following settings.
Important:
Connect either JP1 or JP8, not both at the same time.
Pin
Connections
Name
Settings
JP1
1
2
GND
RBO (/START)
START
When JP1 is connected, RB0 is low, which means it is sending.
Do not connect JP1 at the same time as JP8.
JP7
1
2
GND
RB3 (1CH/4CH)
RX
When JP7 is connected, RB3 is low, which means the
temperature values of only one channel are measured and
transmitted.
When JP7 is disconnected, the values of all 4 sensors are
measured and transmitted.
JP8
1
2
RB0
RB1 (RX-START)
RX
When JP8 is connected, RB0 and RB1 are connected, which
means the TSic
TM
LABkit
TM
sends one data set (data line/packet)
after receiving any signal. Do not connect JP8 at the same time
as JP1.
Default Hardware Settings
JP1 is disconnected and JP8 is connected, which means that the TSic
TM
LABkit
TM
sends only after receiving any
signal via interface.
JP7 is disconnected, which means the TSic
TM
LABkit
TM
operates with up to four sensors.
5.2
Microcontrollers In-Circuit-Programming
For further information regarding hardware and software, please contact HYGROSENS INSTRUMENTS GmbH,
Germany,
www.hygrosens.com.
