SRS Labs CTC100, User Manual

Page: 20 / 177

Introduction 8
CTC100 Programmable Temperature Controller
RMS noise levels for 100
Ω
, 10k
Ω
, and 1M
Ω
(at 25
°
C) thermistors as a function of temperature
RMS noise for DT-670 diode sensor as a function of temperature.
The direction of the excitation current can be set by the user to forward, reverse, or AC
(switching between forward and reverse with each sample). AC current is recommended for
resistive sensors to reduce noise and drift. AC current cannot be used with diode sensors. See the
discussion of the Current setting on page 60.
100W heater outputs
The CTC100 has two outputs for resistive heaters. The output connectors are #6-32 wire clamp
screws and will accept bare wire between 12 and 22 AWG. For the most reliable connection it is
recommended to crimp a #6 insulated spade terminal (such as TE Connectivity 34080 for 16 22
AWG wires or 35559 for 14 16 AWG wires) to the end of each heater wire. A crimp tool such as
TE Connectivity 58433-3 should be used for this purpose.
The CTC100 should always be switched off and unplugged when connecting the heater outputs.