SRS Labs CTC100, Руководство пользователя

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Introduction 2
CTC100 Programmable Temperature Controller
Genera l-purp ose a na log I/O, dig ita l I/O, rela ys, a nd virtua l cha nnels
The CTC100 has four general-purpose ±10V voltage I/O channels read by a 24-bit ADC.
Custom calibration curves and/or offset/gain controls can be used to convert voltage readings to
pressure, temperature, etc.
The CTC100 also has eight digital I/O channels that can interact with user programs. Four 5A
relays can be used for process control. Three virtual channels not connect to any physical input
allow calculated values (such as the difference between two channels, or a value calculated by a user
program) to be displayed, graphed, and logged.
Gra phica l touch screen displa y
The CTC100 play can show any combination of temperature measurements and
heater outputs on graphs or numeric displays. Up to eight channels can be plotted, either on a
single graph with a common Y axis or on separate graphs with independent Y axes.
Touchscreen operation makes the instrument versatile and easy to use.
Da ta log g ing to U S B m em ory devices
Up to one million readings per channel can be logged internal memory. For
more permanent storage, data can be logged to standard USB memory sticks or hard drives.
Readings can be logged at intervals as short as 0.1 s or as long as 1 hour. The log interval can be set
independently for each channel, or a single global interval used.
Data logged to USB devices can be transferred to a computer by plugging the USB device into a
PC and copying the log files. A Windows application that graphs CTC100 log files can be
downloaded from the SRS website.
Com puter com m unica tions
Each of the CT -panel controls has a corresponding text command that can be sent
over USB, Ethernet, and either RS-232 or an optional GPIB interface. When the USB interface is
used, the CTC100 appears on the computer as a standard COM port and can be controlled by any
software that is compatible with an RS-232 port.
Eight digital I/O lines are also provided; these can interact with user programs to control most
U ser prog ra m s
User programs (macros) consisting of one or more remote commands can be uploaded to the
CTC100, either by sending them through one of the communications ports or by saving them as
text files on a USB memory device and then plugging the device into the CTC100. Macros can be
started or stopped, and their progress monitored, from the front panel. Macros can call other
macros, and conditional stat
values calculated by macros can be plotted on-screen, saved to logs, and/or used as inputs for
feedback loops. Up to 10 macros can run concurrently.
At a basic level, macros can be used to program temperature profiles or other sequences of
events. Macros can also be employed in more advanced ways to tailor the behavior of the CTC100
for your experiment; for example, infinite-loop macros running as background tasks can take steps
to address alarm conditions or automatically switch between sensor inputs (or heater outputs)
depending the value of some input.