The CTC100 Cryogenic Temperature Controller — a high performance instrument that can monitor and control temperatures with millikelvin resolution. 

• 4 temperature sensor inputs
• 2 powered & 4 analogue voltage outputs
• Up to 6 feedback control loops
• 4 analogue & 8 digital I/O channels
• Graphical touchscreen display
• Data logging
• User programs (macros)
• USB, Ethernet, RS232 & GPIB 

• Up to 16 input channels
• Up to 6 PID feedback control channels
• 50 Hz PID sampling
• 1mK resolution
• Data logging on removeable flash media
• USB, Ethernet, RS-232 interfaces (std.)
• GPIB interface (opt.)

• Rugged compact design
• 8 module slots
• 9th port for remote module
• 10 MHz reference with external sync
• Cascade multiple mainframes
• GPIB and RS-232 interfaces
• Start-up script memory

Accurate millikelvin thermometry:

• Microvolt/picoamp excitation
• Measurements from 1 mΩ to 100 MΩ
• Variable excitation from 2 Hz to 60 Hz
• Linearised analog output
• Resistance, temperature and phase

• Analog signal path with digital control
• 100 kHz bandwidth
• Low noise front-end
• P, I, D and Offset settable to 0.5 %
• Anti-windup (fast saturation recovery)
• Bumpless transfer, manual to PID
• Analog setpoint with smooth ramping
• Smooth upper/lower limit clamping