AIM & THURLBY THANDAR INSTRUMENTS CPX400 Series Single & dual output PowerFlex dc PSUs - 420 watts per output high performance autoranging outputs, 60V and 20A maximum true analog controls with digital functionality including S-Lock isolated tracking for easy series/parallel use - up to 120V or 40A GPIB, RS-232, USB and LAN interfaces LXI class C compliance aimtti.com aimtti.co.uk aimtti.usCPX400D - Dual 420 watt PowerFlex dc power supply (840W total) View and adjust setting limits S-Lock digitally locks voltage at any time. and current settings at the touch of a button. High accuracy four digit meters have a fixed resolution DC output switches enable for consistent readings at-a- voltage and current to be set glance. up before connecting the load. Range Control gives a choice of PowerFlex (60V/20A) or Individual over-voltage fixed range operation (60V/7A protection for each output. or 20V/20A). Custom Limits enables the analogue controls to cover True analog controls make any voltage or current range. adjustment quick and simple. Both On/Off provides Voltage sensing can be synchronous switching of the changed between local outputs. and remote at the flick of a switch. Isolated voltage tracking facilitates tracking voltage Safety binding post terminals rails or control for series or can accept fixed-shroud 4mm parallel wiring (120V max. or plugs** as well as normal 40A max.). plugs, bare wires, and fork connectors. Choose voltage and current combinations to suit your applications The CPX series is a different type of laboratory power supply designed to meet the need for flexibility in the choice of voltage and current. A conventional PSU has a fixed current limit giving a power capability that reduces directly with the output voltage. The TTi PowerFlex design of the CPX series enables higher currents to be generated at lower voltages within an overall power limit envelope. Each output can provide considerably higher current than a conventional PSU of the same maximum voltage and power (see power curve). Example voltage & current combinations include 60V/7A, 42V/10A, 28V/15A, and 20V/20A. Building upon success The CPX400 series, now comprising five models, was developed from the CPX400A - one of the most successful power supplies ever. Analog controls with digital stability Isolated voltage tracking for maximum flexibility As technology has changed, many products have moved from analog controls The two outputs of the CPX400D are completely independent and electrically to digital ones. Although digital controls suit many instruments, they do not isolated from each other. necessarily suit a bench power supply. With V-Track selected, the two outputs remain electrically isolated, but the Customer research shows that many users prefer the speed and simplicity of voltage control of the Master output sets an identical voltage on the Slave conventional analog controls for setting voltage and current. Digital controls output. may offer greater precision, but often at the expense of ease-of-use. With this This enables the user to create two rails of either in mind, the CPX400 series retains the true analog controls of its predecessor. polarity and to reference them to different grounds if necessary (e.g. digital ground and analog ground). Lock your settings Alternatively the outputs can be wired in series or at the touch of parallel to create a voltage capability up to 120V or a button a current capability up to 40A with the voltage set using a single control. Independent and simultaneous output control The main disadvantage of analog controls is stability and security. The settings of analog potentiometers can drift over time. More importantly, the settings The Both On/Both Off button is in addition to the individual switches for each can be changed accidentally with potentially serious consequences. output, and allow both outputs to be turned on or off synchronously by a single button press. The CPX400 series incorporates S-Lock. One press of the Lock button transfers control of voltage and current from the analog controls to internal digital Synchronous switching of the outputs is of increasing importance for circuitry which can be damaged if one voltage rail is present without the other. circuitry. This offers not just complete security, but exceptional stability as well with each setting controlled by an instrumentation quality DAC.