QL Series II DC Supplies: Digital Control

Comprehensive digital interfaces for remote control

To meet the varying needs of today's engineers, a comprehensive array of interfaces is provided. RS-232, USB and LAN (Ethernet) with LXI support are provided as standard on P and P-G models. GPIB was standard on P models until 2024 when it became a factory fit option (P-G models).

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.

Rear Terminals

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

Command Set and IVI Driver

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 available as a download. This provides support for common applications such as LabView* , LabWindows* and Keysight VEE* .

RS-232

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

USB

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

A USB driver is not needed for Windows* 10 and later but is available as a download for earlier Windows* systems.

GPIB

The GPIB interface was standard on the QL series with P suffix until 2024 when it became a factory fit option (P-G models). It conforms with IEEE-488.1 and IEEE-488.2. GPIB remains a valuable option for legacy system applications.

LAN-Ethernet with LXI

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 LAN-based modular architecture standard for automated test systems managed by the LXI Consortium, and has supplanted GPIB in most applications.

Learn more about LXI (LAN eXtensions for Instrumentation)

* LabView and LabWindows are trademarks of National Instruments.
Keysight VEE (Previously HP VEE then Agilent VEE) is a trademark of Keysight Technologies.
* USB interface uses Windows CDC (Communications Device Class) driver on Windows 10 and later. A driver is available for Windows 2000, XP, Vista, 7 and 8 or to provide the name of the device in Device Manager on later versions of Windows.
* Windows is a trademark of Microsoft inc.