VICI 450 Dynacalibrator - Manual (Page 24)

20
Serial Port Communication
The temperature of the Dynacalibrator Model 450 can be monitored and
controlled remotely by means of a serial port DB-9 female (DCE) connection
and a terminal emulation program such as HyperTerminal.
®
The unit is controlled by entering two-character commands, shown in the table
below. Commands may be either upper case or lower case. Parameters enclosed
in brackets ([ ]) are optional. Note that for enable/disable commands, the states
indicated by an “*” are the defaults at power-up. Only the altered set point
temperature and function coefficients are retained when power is off and
restored at power-up.
Command Meaning
DC[ [=] n ] Show/set decimation count
(Data logging rate, in seconds)
L+ Start data logging
(Log data at the interval set by the decimation count:
DC=1 sets a one second interval)
L- Stop data logging*
P+ Enable front panel control*
P- Disable front panel control
(Prevent set point from being changed with panel controls)
SC Show coeffecients
TE Read environment temperature
TR Read controlled temperature
TS[ [=] n ] Show/set temperature setpoint
VR Show firmware version
?? Display the list of available commands
* Factory defaults, reset at start-up
Setting Up Serial Communication via HyperTerminal ®
1. To open HyperTerminal in Windows ® , click Start > Programs > Accessories >
Communications > HyperTerminal. The following screen will appear: