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Aim-TTi QPX600D Digital Bench Power Supply – 600W, 2 Outputs

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The Aim-TTi QPX600D Digital Bench Power Supply is a dual-output, laboratory DC PSU suitable for benchtop, system and rack-mounted applications. It provides a wide range of voltage and current combinations for maximum flexibility.

PowerFlex+ Design

The Aim-TTi QPX600D Digital Bench Power Supply’s PowerFlex+ design provides a vast range of voltage and current combinations equipping it with maximum flexibility. It also enables higher currents to be generated at lower voltages within the overall power limit envelope. The Aim-TTi QPX600D Digital Bench Power Supply is able to provide six times the current of a conventional PSU.

To improve dynamic performance and minimise ripple, the Aim-TTi QPX600D Digital Bench Power Supply’s PowerFlex+ utilises a multi-phase converter.

Dual Independent or Tracking Outputs

Each of the Aim-TTi QPX600D Digital Bench Power Supply’s channels can provide a voltage output up to 80V and a current output up to 50A within the total power output of 600W. As the Aim-TTi QPX600D Digital Bench Power Supply’s outputs are independent they can support various tracking modes.

The Aim-TTi QPX600D Digital Bench Power Supply includes a tracking mode designed for use when the outputs have been wired in parallel or series. This mode will provide metering of the total voltage or the total current.

When wired in parallel or series, the Aim-TTi QPX600D Digital Bench Power Supply’s outputs can provide a maximum voltage output of 160V and a maximum current output of 100A within the expanded 1200W power limit envelope.

Independent or Simultaneous Output Control

Both of the Aim-TTi QPX600D Digital Bench Power Supply’s outputs feature an On/ Off switch enabling them to be activated and deactivated individually. To facilitate simultaneous activation and deactivation, the Aim-TTi QPX600D Digital Bench Power Supply includes Both On and Both Off buttons. This is useful when working on circuits that may be damaged if only one voltage rail is present.

Numeric or Rotary Entry

Voltage and current levels can be configured using the numeric keypad or the jog wheel with specified increments. The Aim-TTi QPX600D Digital Bench Power Supply has a setting resolution of 1mV.

Memory Setting Stores

Each of the Aim-TTi QPX600D Digital Bench Power Supply’s outputs includes a non-volatile store for saving voltage and current settings. These stores allow settings to be recalled rapidly which is particularly useful for repetitive testing applications.

OVP and OCP Trips

Additionally, the Aim-TTi QPX600D Digital Bench Power Supply’s outputs support variable over-voltage and over-current trips. When triggered the OVP and OCP trips will shut off the output and provide a different level of protection.

The cause of OVP and OCP trip activation is indicated on the Aim-TTi QPX600D Digital Bench Power Supply’s display: the OVP and OCP trips can be triggered by other fault conditions such as temperature and remote sense mis-wiring.

Graphic Display

The Aim-TTi QPX600D Digital Bench Power Supply includes two high-resolution, graphic LCD displays; one for each output. In Standard Display mode, the Aim-TTi QPX600D Digital Bench Power Supply indicates the voltage and current in large characters alongside annotations such as ‘CV mode’ and ‘Output On’. The Aim-TTi QPX600D Digital Bench Power Supply can be programmed to display numbers and text in a variety of sizes.

Dual-parameter display is utilised when settings are being altered: the user can view the new and existing settings, or the actual and limit values in parallel. Furthermore, when configuring complex functions, the Aim-TTi QPX600D Digital Bench Power Supply provides text prompts or complete selection menus.

Power Calculation

The Aim-TTi QPX600D Digital Bench Power Supply’s Power Calculation function indicates the total power provided to the load (V x A) alongside the voltage and current. Total power provided to the load is displayed to a resolution of 0.1W.

Low Resistance Calculation

Alternatively, the Aim-TTi QPX600D Digital Bench Power Supply can be programmed to display the equivalent resistance of the load (V/A).

The Aim-TTi QPX600D Digital Bench Power Supply’s remote sense terminals are used as a four-terminal connection during resistance measurements; this method provides reliable results when measuring the resistance of components that operate at ampere levels, such as magnets. The Aim-TTi QPX600D Digital Bench Power Supply is able to measure low resistance at high currents.

Current Meter Averaging

The Current Meter Averaging function proves particularly useful when measuring rapidly changing loads. It stabilises the Aim-TTi QPX600D Digital Bench Power Supply’s display and reduces the speed and degree of variation by providing an average reading calculated from the preceding four measurements.

Ergonomic Design

The Aim-TTi QPX600D Digital Bench Power Supply is suitable for benchtop, system and rack-mounted applications. To this end, it is housed in a 350mm (13 ¾”)-wide, 3U-high case and is equipped with remote sense terminals and analogue and logic connectors on the front and rear of the unit.

Analogue and Logic Interfaces

The Aim-TTi QPX600D Digital Bench Power Supply’s outputs are equipped with analogue interfaces for the voltage control of output voltage and output current (non-isolated, one for each output).

The Aim-TTi QPX600D Digital Bench Power Supply’s control voltages are digitised and scaling can be selected between 0 to 5V or 0 to 10V for zero to full scale. The Aim-TTi QPX600D Digital Bench Power Supply’s monitor output for voltage and current can also be selected as 0 to 5V or 0 to 10V.

In addition to this, the Aim-TTi QPX600DP Digital Bench Power Supply features an opto-isolated logic control signal for control of output on/off. It can be programmed as true = output on or true = output off. Furthermore, the opto-isolated open-collector logic output signal can be set as true or false for output enabled or disabled, current limit, power limit or any fault trip.

The Aim-TTi QPX600D Digital Bench Power Supply is a flexible, comprehensive and easy-to-use laboratory PSU.

Aim-TTi QPX600D Digital Bench Power Supply Key Features

  • Dual-output, laboratory PSU suitable for benchtop, system and rack-mounted applications
  • Wide range of voltage and current combinations for maximum flexibility
  • PowerFlex+ design provides a vast range of voltage and current combinations equipping the PSU with maximum flexibility
  • Higher currents can be generated at lower voltages within the overall power limit envelope
  • Provides six times the current of a conventional PSU
  • Multi-phase converter improves dynamic performance and minimises ripple
  • Maximum voltage output per channel: 80V
  • Maximum current output per channel: 50A
  • Maximum total power output per channel: 600W
  • Independent outputs
  • Multiple tracking modes
  • Parallel/ Series Tracking mode provides metering of the total current or total voltage
  • Maximum voltage output when channels are wired in series or parallel: 160V
  • Maximum current output when channels are wired in series or parallel: 100A
  • Total power output when channels are wired in series or parallel: 1200W
  • Independent On/Off switch for each output
  • Both On and Both Off buttons can be used to activate and deactivate outputs simultaneously
  • Enter voltage and current levels using the numeric keypad or jog wheel with specified increments
  • High setting resolution: 1mV
  • Non-volatile store for saving voltage and current settings
  • Rapid recall of settings for repetitive testing
  • Each output has an independent memory store
  • Variable OVP and OCP trips: shut off the output and provide a different level of protection when triggered
  • The cause of the OVP/ OCP trip activation is indicated on the display
  • OVP and OCP trips can be triggered by other fault conditions such as temperature and remote sense mis-wiring
  • Each channel has a dedicated high-resolution, graphic LCD
  • Standard Display mode: indicates voltage and current in large characters with annotations such as ‘CV mode’ and ‘Output On’
  • Can be programmed to display numbers and text in a variety of sizes
  • Dual-parameter display for when settings are being altered
  • Provides text prompts or a complete selection menu when configuring complex functions
  • Power Calculation: displays the total power provided to the load (V x A) to a resolution of 0.1W
  • Low Resistance Calculation: displays the equivalent resistance of the load (V/A)
  • Remote sense terminals are used as a four-terminal connection during resistance measurements
  • Provides reliable resistance results when measuring components that operate at ampere levels such as magnets
  • Measure low resistance at high currents
  • Current Meter Averaging: displays an average reading calculated from the four preceding measurements
  • Current Meter Averaging is useful when measuring rapidly changing loads
  • Housed in a 350mm (13 ¾”)-wide, 3U-high case
  • Remote sense terminals and analogue and logic connectors on the front and rear of the PSU
  • OPTIONAL rack mounting kit available
  • Analogue interfaces for voltage control of both output voltage and output current (non-isolated, one for each output)
  • Digitised control voltages can be selected between 0 to 5V or 0 to 10V for zero to full scale
  • Opto-isolated logic control signal can be set as true= output on or true= output off
  • Opto-isolated open-collector logic output signal can be set to true or false for output enabled or disabled, current limit, power limit or any fault trip
  • A flexible, comprehensive and easy-to-use laboratory PSU

What’s Included?

  • Aim-TTi QPX600D Digital Bench Power Supply – 600W, 2 Outputs
Part Code

Aim-TTi QPX600D & QPX600DP Digital Bench Power Supply Technical Specifications 

Output Specifications   
Voltage/Current Levels Voltage Range 1 0V to 60V
Voltage Range 2 0V to 80V
Current Range 0A to 50A
Power Range Up to 600W
Operating Mode Constant voltage or constant current with automatic cross-over and mode indication.
Output Setting Voltage Setting By floating point numeric entry or rotary jog wheel; resolution 1mV for 60V range or 2mV for 80V range
Current Setting By floating point numeric entry or rotary jog wheel; resolution 10mA.
Setting Accuracy Voltage - 0.1% ± 2mV;  0.1% ± 4mV on 80V range
Current - 0.3% ± 20mA
Setting Stores Up to 10 set-ups can be saved and recalled via the keyboard
(or the digital interfaces on QPX600DP).
Keyboard & Rotary Control All functions, including the selection and set-up of the remote control interfaces, can be set from the keyboard. The rotary Jog control can be used to adjust output voltage and current settings in a quasi-analogue mode. The output to be controlled is first selected with the appropriate Control key.
Output Performance Load regulation <0.01% +5mV (CV mode) for any load change within the PowerFlex envelope, using remote sense.
Line regulation <0.01% +5mV for a 10% line voltage change.
Ripple & Noise Typically <3mV rms, <20mV pk-pk, (20MHz bandwidth).
Transient Response <250µs to within 100mV of set level for 5% to 95% load change.
Temp. Coefficient Typically <100ppm/oC.
Sensing Selectable local or remote sensing.
Output Protection External Voltage Output will withstand forward voltages of up to 90V.
Reverse protection by diode clamp
Power Limit Automatic protection within PowerFlex control system
Fault Trip The output will be shut down if any of the four trip conditions listed  below occur
Over Voltage (OVP) Settable 2V to 85V in 0.1V steps
Over Current (OCP) Settable 2A to 55A in 0.1A steps
Over Temperature Monitors internal temperature rise to protect against excess ambient temperature or blocked ventilation slots
Sense Error Monitors the voltage between the remote sense terminals and output terminals to protect against mis-wiring.
Output Switching Push switch operating electronic power control. LED indication of On state
Connection Output Terminals Front and rear output terminals. Safety terminals accepting 6mm wire diameter, 6mm plugs or 8mm spades at 50 Amps max, or 4mm plugs at 30 Amps max
Sensing Terminals Screw-less terminals on rear panel.
Link Modes
In addition to independent output operation, the instrument is capable of operating in a number of
different voltage and current tracking modes which can be activated from the Link Menu.
These modes include Output 2 voltage (V2) tracking Output 1 voltage (V1) by any ratio in the range
5% to 2000%, V2 and I2 set to track V1and I1 (1:1) with total V1 + V2 displayed (useful when
Output 1 and Output 2 are series connected), V2 and I2 set to track V1and I1 (1:1) with total I1 +
I2 displayed (useful when Output 1 and Output 2 are parallel connected).
Metering 
Display Type Large dot-matrix black-on-white backlit LCD.
Meter Function 5 digit voltage meter and 4 digit current meter. Display of limits values,
memory contents etc. Wide range of alpha-numeric messages/menus.
Limits Display Limits settings can be displayed simultaneously with measurements.
Meter Resolution Voltage: 1mV (2mV on 80V range). Current: 10mA
Meter Accuracy Voltage: 0.1% of reading ± 2 digits (CI mode and Unreg)
Current: 0.3% of reading ± 2 digits (CV mode and Unreg)
Additional Metering Functions V x A Display shows calculated power in watts. Resolution 0.1W.
Accuracy 0·5% ± 0·1W
V/A Display shows calculated resistance. Resolution up to 5 digits.
Measurement uncertainty is shown on display.
Analogue & Logic
Analog Remote Control and Monitoring Non-isolated inputs and outputs to set voltage and current limit and to monitor actual output voltage and current. These signals are referenced to the negative output and have a range of 0 to 10V or 0 to 5V (selectable via the keyboard). Note that the analogue control voltage is digitised within the
power supply.
Control Accuracy Voltage: 0.3% ± 4mV; Current: 0.5% ± 40mA
Monitor Accuracy Voltage: 0.3% ± 4mV; Current: 0.5% ± 40mA
Logic Control Input and Output LOGIC IN is a rear-panel opto-isolated input that is activated at an input current greater than approximately 1mA. User can set LOGIC IN (via the keyboard) to enable the output, disable the output, or be ignored when it is activated.
LOGIC OUT is an isolated rear-panel open-collector output that will sink up to 2mA when activated (‘switch closure’); the maximum voltage that can be applied to LOGIC OUT is 30VDC. User can set LOGIC OUT to be ‘closed’ or ‘open’ for output enabled or disabled, current limit (CI mode), power limit (UNREG mode), or for any fault trip.
Digital Bus Interfaces (QPX600DP Only) 
The QPX600DP 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.
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 (QPX600DP)
Setting Accuracy and Resolution As per Manual Control (see Output Setting under Output Specifications)
Programming Speed Command Delay Typically <100ms between receiving the command terminator for a step voltage change at the instrument and the output voltage beginning to change.
Driver Software Supplied (QPX600DP)
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.
* USB interface is supported for Windows 2000, XP, and Vista. Windows is a trademark of Microsoft
General Specifications 
Input AC Input 110V to 240V AC ±10%, 50/60Hz. Installation Category II.
Input Power 1600VA 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 Intelligent variable-speed fans.
Safety & EMC Safety Complies with EN61010-1
EMC Complies with EN61326
Physical Size 350 x 130 x 413mm (WxHxD) (3U height) .
Weight 9.2kg (20lb).

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