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The QL Series II is the latest and highest performance linear regulated power supply series from TTi.

Single and triple output models are available.  Each model can be specified with or without digital remote control interfaces.

Each main output provides more than 100 watts of power, and dual range capability offers higher currents at lower voltages.

New features include an enhanced auxiliary output with fully variable voltage and higher current capability on T models, and an LXI compliant LAN interface on all P models.

To meet the varying needs of todays engineers, a comprehensive array of interfaces is provided. RS-232, USB, GPIB and LAN （Ethernet） with LXI support are provided as standard.

Each of the digital bus interfaces provides full control of voltage, current, and output on/off, plus read-back of voltage, current and status.  The interfaces are opto-isolated from the output.

Power and sense terminals are duplicated on the rear panel for rack mount applications and other situations where rear connection is more convenient.

The basic command set for the QL-P Series II is compatible with both the original QL-P series, the PL-P series and other TTi power supplies such as the CPX-P series.

An IVI driver for Windows is supplied. This provides support for common applications such as LabView*, LabWindows* and HP-VEE*.

An RS-232/RS-423 interface is provided for use with legacy systems. This type of serial interface remains in common useage and is perfectly satisfactory for the control of power supplies because data speed is not an issue.

USB provides a simple and convenient means of connection to a PC and is particularly appropriate for small system use.

A USB driver is provided suitable for Windows* systems.

The GPIB interface conforms with IEEE-488.1 and IEEE-488.2.

GPIB remains the most widely used interface in larger system applications.

The LAN interface uses a standard 10/100 base-T Ethernet hardware connection with ICMP and TCP/IP Protocol for connection to a Local Area Network or direct connection to a single PC.

This interface supports LXI and is the most appropriate for larger system use because of its scalable nature.

LXI Compliance

The LAN interface is compliant with LXI-C. LXI is the next-generation, LAN-based modular architecture standard for automated test systems managed by the LXI Consortium, and is expected to become the successor to GPIB in many systems.

The triple output models have two identical outputs which are both independent and isolated.

Illuminated keys selects which output is to be adjusted and provide unambiguous indication.

In situations where the user wishes to set similar voltages or currents on both outputs, 搇inked?mode is available. When linked, all adjustments are applied to both outputs simultaneously.

Linked mode can provide tracking outputs and is particularly useful when the user wishes to wire the outputs in series or parallel to obtain higher voltages or currents. A 揷opy? function allows all of the settings of one output to be duplicated on the other prior to linking.

For even greater flexibility, the outputs can be linked when set to different voltages or currents allowing separate settings to be loaded into the linked-mode memories for simultaneous recall.

Each output has its own illuminated dc on/off key providing compley independent control.

For situations where power needs to be connected or disconnected from all three outputs together, master on/off keys are also provided.

Synchronous switching of supply rails is increasingly important when working with circuits which will not tolerate one supply rail being present alone.