Aim-TTi QPX1200S - Bench/System DC Power Supplies, PowerFlex or PowerFlex+ regulated Single Output, 60V/50A1200W Powerflex, No Bus Interfaces

The QPX1200S is a 1.2kW single output dc power supply that offers users a level of flexibility that cannot be achieved with conventional laboratory power supplies. It is suited to be bench-top and system applications and is fitted with both front and rear terminals and an analog remote control interface.

The QPX1200SP adds a wide range of digital interfaces: USB, RS232, GPIB and LXI compliant LAN (Ethernet). * Note that the QPX1200L (now discontinued) is identical to the QPX1200SP but omits the GPIB interface.
 

QPX1200S - 1200 Watt DC Power Supply with PowerFlex

Bench or Rack Mounting

The QPX1200S is housed in a 350mm (13¾”) wide case suitable for use on the bench-top. Output and remote sense terminals are mounted both on the front and on the rear panel along with the analog and logic interface connectors and, on the QPX1200SP, the bus interface connectors. The power supply is 3U high and a rack mounting kit (RM310 or RM310A) is available as an option.

Power Calculation

The meter for each output can be set to show the total power currently being provided to the load (V x A) to a resolution of 0.1 watts. The power is shown in addition to the voltage and current values.

Low Resistance Calculation

The meter for each output can be set to show the equivalent resistance of the load by displaying voltage divided by current.

Low resistance measurements using a DMM utilize a low excitation current and suffer from thermal emf errors and other low voltage effects. This function enables low resistance measurements to be made at high currents by using the remote sense terminals to create a four terminal connection.

This can give much more reliable results for certain component types, such as magnetics, which operate at ampere levels.

QPX1200SP & QPX1200L - USB, RS-232, LAN & GPIB

Graphic Display For Clarity and Ease of Use

The QPX600D incorporates two high resolution graphic LCDs capable of showing numbers and text in a variety of sizes. The standard display mode shows voltage and current in large characters along with text annunciators such as CV mode and Output On.

When settings are being changed, a dual display of parameters is used enabling existing and new settings, or actual and limit values to be viewed simultaneously.

More complex functions are provided with text prompts or complete selection menus.

Current Meter Averaging

When measuring rapidly varying loads it can become difficult to get useful readings from the current meter. By selecting meter averaging, the reading is stabilised by averaging the last four readings to reduce the speed and extent of the variation.

Numeric or Rotary Entry

Voltage and current levels can be set directly via the numeric keypad. Alternatively settings can be changed via the jog wheel at user selectable increments.

Multiple Settings Stores

Non-volatile stores are incorporated for rapid recall of voltage and current settings and are useful for repetitive testing applications. Separate stores are provided for each output.

OVP and OCP trips

Variable trips for over-voltage and over-current are provided on each output. Unlike a limit setting, the trip setting turns the output off and provides a different level of protection. For example, when repetitively testing a unit which normally takes a peak current of 10A, the current limit could be set to 11A and the OCP to 10.1A to ensure that a faulty unit will trip the supply off and not be damaged by over dissipation. The output trip can also be activated by other fault conditions including over temperature and remote sense mis-wiring. The cause of the trip is shown on the display.

The control voltages are digitized to control the PSU and the scaling can be selected as 0 to 5V or 0 to 10V for zero to full scale. Monitor outputs for voltage and current are also provided, and can similarly be selected as 0 to 5V or 0 to 10V.

An opto isolated logic control signal is provided for control of output on/off. This can be menu selected as true = output on, or true = output off. An opto isolated open-collector logic output signal is also available. This can be menu selected as true or false for output enabled or disabled, current limit, power limit, or any fault trip.

QPX1200SP - Comprehensive Bus Remote Control

To meet a wide variety of needs, the QPX1200SP adds a comprehensive array of digital bus interfaces. RS-232, USB, GPIB and LAN (Ethernet) with LXI support are all provided as standard. Each of the digital bus interfaces provides full control of voltage, current, utput on/off and set-up, plus read-back of voltage, current and status. The interfaces are at ground potential and are opto-isolated from the output terminals.

IVI Driver

An IVI driver for Windows is included. This provides support for common high-level applications such as LabView*, LabWindows*, and HP/Agilent VEE*.

• * LabView and LabWindows are trademarks of National Instruments. HPVEE (now Agilent VEE) is a trademark of Agilent Technologies. 
• * Windows is a trademark of Microsoft.

The QPX1200L is identical to the QPX1200SP but omits the GPIB interface.