SRS Labs CTC100, User Manual

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Introduction 12
CTC100 Programmable Temperature Controller
applying offset and gain factors. By doing these calculations on a virtual channel that has been
configured to follow a sensor input (instead of doing them directly on the sensor input channel),
the raw sensor input is preserved and can still be viewed.
Likewise, if a
by a PID feedback loop. The feedback loop can be used, for example, to implement cascade
control; see the description of the Channel.PID.Casc button in the Operation section. Unlike other
outputs, virtual outputs are not forced to zero when the CTC100
with the
Output Enable button. However, virtual PID feedback loops do stop running when the CTC100
outputs are disabled.
When the value of a virtual channel is changed by a macro or via the front panel, the new value
does not become effective until an ADC conversion occurs. Therefore, if a macro sets the value of a
virtual channel and then immediately reads the value back, the old value may be returned.