Aim-TTi CPX400D Digital Bench/ System DC Power Supply

Description

The Aim-TTi CPX400D Digital Bench/ System DC Power Supply is a dual-channel laboratory power supply system capable of providing fixed and flexible outputs.

PowerFlex Design

Due to the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s PowerFlex design it is able to provide variable voltage and current combinations within the maximum power envelope; it can produce higher currents at lower voltages. The Aim-TTi CPX400D Digital Bench/ System DC Power Supply has a maximum power output of 420W per channel (total power output: 840W), a maximum voltage output of 60V per channel and a maximum current output of 20A per channel.

To provide a good transient response and to reduce noise, the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s PowerFlex regulation system utilises a high-frequency pre-regulator in combination with a linear post regulator. Each output can operate in constant voltage or constant current mode with automatic crossover and mode indication.

Isolated Voltage Tracking

Electronic isolation of each of the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s independent outputs ensures greater flexibility. The V-Track mode maintains electronic isolation whilst enabling the voltage control on the master output to set an identical voltage on the slave output. As a result, the user is able to create two rails of either polarity that can be referenced to different grounds if required.

Alternatively, the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s outputs can be wired in parallel or series to generate a voltage output of 120V and current output of 40A.

Output Control

Both of the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s outputs feature an independent On/Off control. However, the Aim-TTi CPX400D Digital Bench/ System DC Power Supply also includes a Both On/ Both Off control for the simultaneous activation and deactivation of the two channels. This is particularly useful when working on circuits that can be damaged if only one of the voltage rails is present.

Precision Metering and Remote Sense

In addition to an independent On/Off switch, each of the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s channels is equipped with a separate voltage and current meter. These 4-digit displays with their fixed 10mA/ 10mV resolutions prevent misinterpretation of readings and allow the user to view accurate and consistent measurements for each output at a glance.

Additionally, each output features coarse and fine voltage controls and a logarithmic current control which allows low current levels to be set accurately. The View Settings button allows the user to see and alter settings as necessary.

Furthermore, to ensure precise regulation at the load and true metering of the load voltage, each of the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s outputs includes remote sense terminals. The remote sense terminals can be activated and deactivated as required.

The Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s channels are also over-voltage protected.

Analogue Control with Digital Stability

As mentioned above, each of the Aim-TTi CPX400D Digital Bench/ System DC Power Supply’s outputs features voltage and current controls. The Aim-TTi CPX400D Digital Bench/ System DC Power Supply retains the easy-to-use analogue controls of its predecessor, the Aim-TTi CPX400A Power Supply. However, to prevent drift and accidental alteration, this PSU includes an S-Lock function which transfers control of voltage and current from the analogue dials to the internal digital circuitry; thereby providing the user with the ease of analogue control and the precision and stability of digital operation.

Fixed Power Supply

In addition to functioning as a PSU with variable outputs, the Aim-TTi CPX400D Digital Bench/ System DC Power Supply can also be used as a fixed power supply at either 60V/7A or 20V/20A. The Fixed Power Mode provides finer resolution on the voltage and current control and ensures that the Aim-TTi CPX400D Digital Bench/ System DC Power Supply remains in either constant voltage or constant current mode regardless of the load.

Moreover, the Aim-TTi CPX400D Digital Bench/ System DC Power Supply also includes an option for customising the voltage and current limits, allowing the user to tailor the PSU to his/her application. This makes it easier for the user to set up the Aim-TTi CPX400D Digital Bench/ System DC Power Supply for his/her application and reduces the possibility of error.

Ergonomic Design

The Aim-TTi CPX400D Digital Bench/ System DC Power Supply is compact ensuring that it is suitable for use on crowded laboratory benches. The Aim-TTi CPX400D Digital Bench/ System DC Power Supply also includes safety binding posts capable of accommodating normal plugs, bare wires, fork connections and fixed-shroud 4mm plugs common to laboratories. The binding posts are touch-safe to 250V due to their limited opening length and raised insulated shoulders.

In addition to this, the compact size of the Aim-TTi CPX400D Digital Bench/ System DC Power Supply (half-rack by 3U case size) means that two units can be fitted in a single rack slot.

The Aim-TTi CPX400D Digital Bench/ System DC Power Supply is a compact, comprehensive and customisable PSU.

Aim-TTi CPX400D Digital Bench/ System DC Power Supply Key Features

Dual output laboratory power supply system capable of providing fixed and flexible outputs
PowerFlex design provides variable voltage and current combinations within the maximum power envelope
Produces higher currents at lower voltages
Maximum power output per channel: 420W
Total power output: 840W
Max voltage output per channel: 60V
Max current output per channel: 20A
PowerFlex regulation system utilises a high-frequency pre-regulator in combination with a linear post regulator
PowerFlex regulator system provides good transient response and reduces noise
Each output can operate in constant voltage or constant current mode with automatic crossover and mode indication
Outputs are independent and electronically isolated for greater flexibility
V-Track mode maintains electronic isolation whilst enabling the master output to set an identical voltage on the slave output
Outputs can be wired in parallel or in series to generate 120V and 40A outputs
Each channel features an On/Off switch
Both on/ Both Off switch for activating and deactivating both channels simultaneously
Each channel has an independent voltage and current meter
Voltage and current meters have a 4-digit display and fixed 10mV/ 10mA resolution
Coarse and fine voltage controls on each output
Logarithmic current control for accurately setting low current levels
View Settings button: view and alter settings as required
Remote sense terminals ensure precise regulation at the load and true metering of the load voltage
Remote sense terminals can be switched on and off as required
Outputs are over-voltage protected
S-Lock transfers control of voltage and current from analogue dials to internal digital circuitry
S-Lock prevents drift or accidental alteration
S-Lock provides the ease of analogue control combined with the precision and stability of digital operation
Can be used as a fixed-output power supply at 60V/ 7A or 20V/20A
Includes an option for customising the voltage and current limits
Compact
Safety binding posts can accommodate normal plugs, bare wires, fork connections and fixed-shroud 4mm plugs
Half-rack by 3U case size means that two units can be fitted in a single rack slot
Binding posts are touch-safe to 250V
A compact, comprehensive, customisable PSU

What’s Included?

Aim-TTi CPX400D Digital Bench/ System DC Power Supply

Tech Specs

Aim-TTi CPX400 Series Digital Bench/ System DC Power Supply Technical Specifications

Output Specifications (each output)
Voltage/Current/Power Levels	Voltage Range:0V to 60V
	Current Range:0A to 20A
	Power Range:Up to 420W subject to power envelope.
Note	Actual maxima for voltage and current are typically 1% greater than the figures given above.
Power Envelope	The maximum current atany voltage settings is limited by the power envelope which is set to give 7A at 60V rising to 20A at 20V under all ac supply conditions (both outputs loaded). At lower output voltages the power is restricted by the 20 amps current maximum.
Output Setting and Control	Voltage Setting: By coarse and fine controls
	Current Setting: By single logarithmic control
	Output Mode:Constant voltage or constant current with automatic cross-over. CC indicator lit in constant current mode
	Output Switch:Electronic, non isolating. Preset voltage and current limit displayed when Output is off. Output rise time no load <10ms.
	View Settings: With the output On, the meters show actual voltage and current. The preset levels can be viewed and adjusted at any time by pressing the View Settings button
	Status Indication:LED indication of Output On, V/I Limits, CV, CI, Power Limit, Remote, LAN status. Message on meter display for trip condition.
S-Lock	(Settings Lock) Voltage and current settings can be locked by a single button press. Lock accuracy is equal to the meter accuracy (see Meter Specifications).
Output Performance	Ripple & Noise:Typically <3mV rms, <15mV pk-pk, (5mV rms max.) in CV mode.
	Load Regulation: Voltage - <0·01% of maximum output for any load change within the PowerFlex envelope (remote sense connected). Current - <0·05% of maximum output for any load change within the PowerFlex envelope
	Line Regulation: Voltage - <0·01% of maximum output for a 10% line change. Current - <0·01% of maximum output for a 10% line change.
	Transient Response: <250µs to within 50mV of setting for a 5% to 95% load change.
	Temp. Coefficient: Typically <100ppm/°C
Output Protection	Output Protection: Forward protection by Over-voltage Protection (OVP) trip. Reverse protection by diode clamp for currents to 3A.
	OVP Setting/Range: Via screwdriver adjustable preset on front panel. Range 1V to 66V
	Over-temperature: Output trips off for over-temperature.
	Safety Interlocks: Operations that could cause an unexpected change in voltage or current settings are interlocked with the output switch.
Output Connections	Output Terminals:Universal 4mm safety binding posts on 19mm (0·75”) spacing at front. Screw terminals at rear (CPX400SA, SP & DP only).
Output Connections	Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs, fork terminals and bare wires.
Remote Sense	Sense Selection: Voltage sensing is selected as Local or Remote by front panel switch.
Remote Sense	Sense Terminals: Sprung loaded screw-less terminals at front. Screw terminals at rear (CPX400SA, SP & DP only).
Meter Specifications (each output)
Display Type	Dual 4-digit meters, 10mm (0·39”) LED
Voltage Meter	Resolution/ Accuracy: 10mV / ± 0·1% of reading ± 2 digits
Current Meter	Resolution/ Accuracy: 10mA / ± 0·3% of reading ± 20mA
Voltage Tracking (CPX400D & DP)
Independent Mode	In the normal mode of operation, each output is fully independent and isolated. Operation is equivalent to two single output power supplies.
Voltage Tracking Mode	The two outputs remain isolated, but the Slave voltage controls are disabled and the Slave voltage is set equal to the Master voltage. This can be used to generate tracking bipolar voltages, or tracking unipolar voltages relative to different grounds. When voltages greater than 60V are required, the outputs can be wired in series to generate 0 to 120V with the voltage controlled from the Master. When currents greater than 20A are required, the outputs can be wired in parallel to create the equivalent of a 40A power supply with the voltage controlled from the Master. Track Accuracy: Slave voltage = ± (0·1% of Master voltage setting + 10mV)
Both On/ Both Off (CP400D & DP)	Each output has an independent DC On/Off control, however, an additional control button is provided which turn both outputs on or off simultaneously.
Analogue Remote Interface (CPX400SA Only)
The CPX400SA offers galvanically isolated analogue remote control of voltage and current from control voltages. Voltage and current front panel settings generate non-isolated analogue output voltages that can be used to control slave power supplies.
Input Scaling	0 to 100% control of voltage or current from 0 to 5V or 0 to 10V (selectable)
Input Accuracy	Voltage: 0.3% ±20mV. Current: 0.5% ±50mA. Input impedance 10KΩ
Output Scaling	Set values of 0 to 100% of rated output voltage and current generate 0 to 5V (not isolated)
Output Accuracy	Voltage: 0.3% ±20mV. Current: 0.5% ±50mA. Output impedance 125Ω
Remote On/Off	Output On/Off can be controlled by external switch closure (not isolated)
Digital Bus Interfaces (CPX400SP & CPX400DP)
The CPX400SP & CPX400DP offers full remote control and read-back using RS-232, USB, GPIB or LAN (compliant with LXI class C). All interfaces are at ground potential and opto-isolated from the output terminals. Note: Remote/Local Sense, is manually selectable only.
RS-232	Standard 9-pin D connector. Baud rate 9,600.
USB	USB 2.0 connection (backwards compatible with USB 1.x). Operates as a virtual COM port.
GPIB (IEEE-488)	The interface conforms with IEEE-488.1 and IEEE-488.2.
Ethernet (LAN)	Standard 10/100 base-T hardware connection. ICMP and TCP/IP Protocol for connection to Local Area Network or direct connection to a single PC.
LXI Compliance	LAN interface is compliant with LXI class C. (LXI is the abbreviation for Lan eXtensions for Instrumentation).
Digital Programming Performance (CPX400SP & DP only)
Voltage Setting	Resolution/Accuracy: 1mV / ± (0.05% +10mV)
Current Setting	Resolution/Accuracy: 1mA / ± (0.3% +5mA)
Programming Speed	Command Delay: Typically <25ms (this must be added to any of the figures below)
	Voltage Up Time: <10ms* to 1%
	Voltage Down Time: <80ms* to 1% (full load); <1.5s* to 1% (no load)
	* The up and down times vary with range and voltage step size.
General Specifications
Input	AC Input: 110 to 240 volts ±10% 50/60Hz. Installation Category II.
Input	Input Power: Single - 625VA, Dual - 1250VA max.
Temperature & Environmental	Operating Range: +5ºC to +40ºC, 20% to 80% RH
	Storage Range: -40ºC to + 70ºC
	Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.
	Cooling: Rear discharge variable speed fan.
Safety & EMC	Safety: Complies with EN61010-1
Safety & EMC	EMC: Complies with EN61326
Physical	Size: Single - 107 x 130 (¼ rack 3U) x 398mm Dual - 210 x 130 mm (½ rack 3U) x 377mm (size excludes feet, knobs and terminals).
Physical	Weight: Single - 4.25kg (9.35lb), Dual - 6.3kg (13.9lb)
Driver Software Supplied (CPX400SP & DP)
IVI Driver	An IVI driver for Windows is supplied. This provides support for common applications such as LabView, LabWindows, HPVEE* etc.
USB Driver	An installation file is supplied which calls a standard Windows* USB driver.
Notes	* LabView and LabWindows are trademarks of National Instruments. HPVEE (now Agilent VEE) is a trademark of Agilent Technologies.
Notes	* USB interface is supported for Windows 2000 and above. Windows is a trademark of Microsoft.