Benchtop power supply Ls-Lx

AC/ACsingle-phasethree-phase

Overview
The Ls-Lx Series is a family of programmable AC power sources and analyzers covering 3 kVA to 18 kVA. Ls models provide an economical, improved successor to the classic L Series with optional arbitrary waveform and harmonic measurement features. Lx models combine flexible AC source functions with an integrated high-performance power analyzer for extended measurement and waveform capabilities.

Model summary
Model: Ls-Lx Series
Voltage range: 0–312 V (line-to-neutral standard)
Current: up to 50 A (model dependent)
Power: 3 kVA–18 kVA (single chassis up to 6 kVA; multi-chassis up to 18 kVA)

Ls Series

• Improved economical version of the California Instruments L Series.
• Available in single-phase (-1) or three-phase (-3) configurations.
• Single-chassis power up to 6 kVA; systems can be paralleled to achieve up to 18 kVA.
• Microprocessor control with front-panel keypad and backlit alphanumeric LCD.
• Analog controls for dynamic slewing of voltage and frequency.
• Optional: arbitrary waveform generation, harmonic measurements, DO-160 or MIL-STD-704 firmware.
• Standard remote interfaces: USB and RS232C; optional GPIB and LAN.

Lx Series

• Microprocessor controlled with simplified front-panel operation and analog slew controls.
• Precise output regulation and high load drive capability.
• Integrated power analyzer for voltage and current harmonic analysis and waveform capture.
• Supports arbitrary waveform generation and extended harmonic measurements with options.
• Standard remote interfaces: IEEE-488 (GPIB) and RS232C; SCPI command support for remote programming.
• Optional avionics/defense test firmware (DO-160, MIL-STD-704) available.

Features and benefits
Key features - Ls Series

• Backward compatibility with L Series functions and bus protocols.
• Single- and three-phase operation suitable for industrial and avionics test applications.
• Scalable power via multi-chassis configurations.
• Transient programming for AC line disturbance simulation.
• Built-in measurements: voltage, current, power and basic waveform parameters.
• Optional advanced functions: arbitrary waveform generator, harmonic analysis, GPIB interface.
• Interfaces: USB & RS232C standard; GPIB & LAN optional.

Key features - Lx Series

• Compatibility with legacy HP6834B and iL Series functions where applicable.
• Single- and three-phase modes for test bench and system integration.
• Multi-chassis systems deliver higher total power (up to ~17.3 kVA depending on configuration).
• Arbitrary waveform generator for harmonics and distortion testing.
• Built-in power analyzer for detailed harmonic and time-domain measurements.
• Standard interfaces: IEEE-488, USB & RS232 for remote control and ATE integration.

Features details - Ls Series

• Backward compatibility: function and bus compatibility with CI L Series; APE command syntax available via -GPIB option.
• Applications: precision regulation, high load drive current, avionics/defense testing with optional firmware.
• Transient programming: programmable lists of voltage/frequency/phase/waveform steps; front panel or GUI execution and PC download.
• Standard measurements: frequency, phase, Vrms, Irms, peak current, crest factor, real/apparent power, power factor.

Features details - Lx Series

• Measurement system: real-time digitization with a 4K-sample buffer and DSP for RMS, power and FFT harmonic extraction (up to 50 harmonics, fundamentals to 250 Hz).
• Waveform generation: sine, clipped sine and user-defined arbitrary waveforms; harmonic definition up to 50 harmonics with GUI storage.
• Advanced measurements: voltage/current amplitude and phase harmonics, THD, and time-domain waveform capture; data can be displayed, logged and exported via GUI or bus.
• Diagnostics: self-test with error reporting.

Windows Graphical User Interface (GUI)

• Soft front panel for PC control.
• GUI functions: full output parameter control; create/run/save/print transient programs; measure and log standard and advanced measurements.
• With -ADV option: generate/save arbitrary and harmonic waveforms; capture and display voltage/current waveforms and harmonic data.

Notes
End-of-life (EOL) announced February 28, 2023; Last Time Buy until September 30, 2023. Recommended replacement family: Asterion AC Single & Three Phase power sources (replacement depends on model/configuration).

Output options

• -AX: Auxiliary outputs (26 VAC, 5 VAC); limits upper frequency to 800 Hz.
• -HV: 156/312 V output range.
• -EHV: 200/400 V output range.
• -HF: extends upper frequency limit (check compatibility table).
• -LF: limits output frequency to 500 Hz.
• -FC: modifies output frequency control to ±0.25%.

Controller options

• -ADV: advanced feature set (arbitrary waveform generation, harmonic analysis).
• -EXS: external synchronization.
• -GPIB: IEEE-488 interface and APE programming language.
• -LAN: Ethernet interface.
• -MB: multi-box controller for auxiliary chassis.
• -MODE: adds phase mode selections for -3 models.
• -L22 / -LKM / -LKS / -LNS: locking knobs, clock/lock master/auxiliary, line sync options.

Avionics test routine options

• -ABD / -AMD / -A350 / -AIRB: Airbus test suites and combinations (requires -ADV and PC software).
• -704 / -704F: MIL-STD-704 firmware variants.
• -160: RTCA/DO-160D section 16 and related firmware.

Cabinet options
C prefix: installed and pre-wired 19" cabinet systems.

Compatibility notes
Option compatibility depends on specific model configuration; consult factory documentation for HF, LF, HV, EHV and multi-chassis compatibility.

Supplied with
User/programming manual on CD-ROM, software and RS232C serial cable.

Technical specifications

• Series name: Ls-Lx Series.
• Variants: Ls Series and Lx Series, single-phase and three-phase models.
• Voltage range: 0–312 V LN standard; optional ranges and line-to-line maxima on 3-phase models with -HV/-EHV options.
• Current: 0–50 A depending on model.
• Power: 3–18 kVA (single chassis to 6 kVA; multi-chassis to 17–18 kVA depending on model).
• Waveform modes: sine, clipped sine, square, harmonic and user-defined arbitrary waveforms (with -ADV option).
• Measurements: frequency, phase, Vrms, Irms, peak current, crest factor, real/apparent power, power factor; Lx adds extended harmonic analysis.
• Harmonic analysis: up to 50 harmonics (with advanced options) for fundamentals up to 250 Hz.
• Transient generation: programmable step lists and GUI libraries.
• Interfaces: USB & RS232C standard; IEEE-488 (GPIB) and LAN optional/standard depending on model.
• Remote control: SCPI support (Lx) and APE command syntax for legacy compatibility (Ls with -GPIB).
• Diagnostics: self-test with error reporting.
• Software: Windows GUI for control, waveform generation, transient programming and data logging.
• Optional avionics/defense firmware and test suites: DO-160, MIL-STD-704, Airbus/Boeing specific packages.