System Operation
3-4 FOT Lab Kit User’s Manual
Analog Outputs The FOT Lab Kit includes a 0-10V analog output for each of the four
measurement channels. There is a positive (+) and Negative (−)
screw terminal contact for each channel. Connections should be
made with shielded 22 AWG wire and a circuit impedance of
>1kOhm.
The FOT Lab Kit can be used with LabVIEW sofware after loading
drivers available on www.luxtron.com.
The analog outputs scaling and offset are programmable. These
settings are adjusted using the AS and AO parameter commands.
For a description and examples of how to use these commands
please see the detailed command definitions on pages 4-7 and 4-8.
User Interface The FOT Lab Kit communicates through a standard RS-232 serial
interface. The connection is a 2-wire interface: Transmit, Receive
and Ground which can be connected to a standard PC equipped
with a 65550 or equivalent UART device. The PC host software may
be a standard terminal emulation application such as
HyperTerminal
ΤΜ
or a custom device-control program
communicating through the RS-232 interface.
The user interface is described in detail in Chapter 4 and Chapter 5
of this manual.
NOTE The serial interface is the main conduit through which the FOT
Lab Kit communicates with the user. The instrument communicates at
9,600 bits-per-second (sometimes erroneously referred to as 9,600
Baud). The bit protocol is 8 data bits, one stop bit and no parity (8-N-
1). The instrument does not use a handshaking protocol.
Calibration Basic temperature calibration is performed at the factory, however
to achieve the highest level of accuracy, it will be necessary to
perform a simple calibration to adjust for the type and positioning
of the temperature probe used. Please refer to Appendix A,
“Calibration Procedure’’, for details on performing this calibration.
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