Clarke-Hess 515 High Accuracy AC Reference Source

The Clarke-Hess 515 is a high-precision AC reference source designed for applications such as LVDT and Synchro/Resolver transducer excitations. With a voltage accuracy of 0.1%, a resolution of 0.001 V, and a frequency range of 360 Hz to 20 kHz, the 515 provides a stable and reliable reference source for laboratory and industrial applications.

This instrument features isolated outputs, built-in load detection and a maximum output power of 15 VA, making it ideal for driving inductive loads without output voltage fluctuations.

High performance and reliability

The Clarke Hess 515 delivers a stable and accurate output voltage from 1 Vrms to 120 Vrms with a frequency accuracy of ±0.01%. The four-digit voltage resolution and five-digit frequency resolution ensure extremely precise setting and control.
Built-in load sensing technology ensures that the output impedance is practically zero, so variations in load do not affect the output voltage. This is crucial for applications where a stable reference voltage is essential.

Versatile functionality and connectivity

> Remote sensing eliminates voltage drops over long cables.
> Isolated outputs prevent ground loop problems and improve signal integrity.
> USB interface standard, optional IEEE-488 (GPIB) interface for external control.
> Overload protection prevents damage to the device and connected systems.
> Optional high-performance power amplifier mode for applications requiring higher powers.

Applications Clarke-Hess 515 High Accuracy AC Reference Source

The Clarke Hess 515 is ideal for:

> LVDT and Synchro/Resolver transducer excitations
> Precision AC reference sources for measurement and calibration laboratories
> Industrial and scientific applications with inductive loads
> Research and development in power electronics

Technical specifications

> Frequency range: 360 Hz – 20 kHz
> Frequency accuracy: ±0.01%
> Output voltage: 1 Vrms – 120 Vrms
> Voltage resolution: 4 digits
> Frequency resolution: 5 digits
> Amplitude accuracy:

• * 1V – 8V: 0,1% + 5 mV (to 5 kHz), 0,2% + 5 mV (to 20 kHz)
• * 8V – 16V: 0,1% + 10 mV (to 2 kHz), 0,2% + 10 mV (to 20 kHz)
• * 16V – 32V: 0,1% + 20 mV (to 2 kHz), 0,2% + 20 mV (to 20 kHz)
• * 32V – 120V: 0,1% + 60 mV (to 2 kHz), 0,2% + 60 mV (to 20 kHz)

• > Maximale output current:
  • * 1V – 8V: 1,8 A
  • * 8V – 16V: 0,94 A
  • * 16V – 32V: 0,47 A
  • * 32V – 120V: 0,125 A
• > Harmonic distortion: < 0,25%
• > Display: Hoge resolution colour display
• > Interfaces: USB (standard), IEEE-488 (optional)
• > Power supply: 90 – 264 V RMS, 47 – 63 Hz, 30 VA max.

The Clarke Hess 515 High Accuracy AC Reference Source offers unmatched stability and precision for applications where a reliable AC reference source is required. Contact us for more information or a customised quote.