Audio Oscillator-1kHz and 10 kHz

The RDL ST-OSC2A is a precision sine-wave audio signal oscillator that combines two fixed single-tone sources in one module. One oscillator operates at 1 kHz and the other at 10 kHz, providing known audio frequencies as fixed single-tone outputs. User-adjustable output levels, separate outputs for each oscillator, and internal automatic gain control support amplitude-stable signal delivery across balanced or unbalanced lines.

Ideal Use Cases

The ST-OSC2A fits audio setups that need a dedicated 1 kHz reference, a dedicated 10 kHz reference, or access to both fixed tones. It is particularly relevant wherever an amplitude-stable sine-wave signal must be placed on a high- or low-impedance line. Because each oscillator provides two separate outputs, the module also suits installations that need the same tone available at two output connections. Each output may be used in a balanced or unbalanced configuration, giving the integrator flexibility to match the connected audio line.

Why Choose This Model

This model is defined by its specific frequency pair: 1 kHz and 10 kHz. That distinction matters when selecting between the listed ST-OSC2 variants, since the ST-OSC2B instead provides 100 Hz and 400 Hz. On the ST-OSC2A, both tone levels are precisely user-adjustable from off to +10 dBu into a 600 Ω load. The internal AGC circuit maintains the selected level, directly supporting the amplitude-stable operation identified for the product. Two outputs per oscillator add connection capacity without changing the fixed-tone arrangement.

Installation and Integration

Each oscillator has two outputs that can be connected as balanced or unbalanced. The specified 200 Ω output impedance is intended to drive either high- or low-impedance lines. Power is supplied at 24 Vdc and 80 mA, with support for ground-referenced or floating power arrangements through the RDL SupplyFlex input configuration. The recommended supply is the PS-24AS for USA use or the PS-24AX for international use; the power supply is not included. The specified ambient operating range is 0° C to 55° C. These requirements should be matched to the line configuration, load, power arrangement, and operating environment during integration.

Performance Highlights

• Two single-tone precision sine-wave oscillators provide 1 kHz and 10 kHz signals.
• Each oscillator includes two separate outputs, for four output connections across the module.
• Outputs support balanced or unbalanced wiring.
• Output level is adjustable from off to +10 dBu with a 600 Ω load.
• An internal AGC circuit maintains output level for amplitude-stable operation.
• A 200 Ω output impedance supports high- or low-impedance lines.
• Power requirements are 24 Vdc at 80 mA, ground-referenced or floating.

What Makes It Different

The ST-OSC2A concentrates on two defined audio frequencies rather than presenting an unspecified variable-frequency range. Its 1 kHz and 10 kHz oscillators remain independently useful because each has its own pair of outputs and precise level adjustment. The combination of fixed tones, four total output connections, balanced or unbalanced operation, and AGC-maintained level makes the signal-path requirements clear before installation. RDL SupplyFlex power input compatibility further allows the module to work with either a ground-referenced or floating 24 Vdc supply arrangement.

Final Assessment

For an audio system requiring stable 1 kHz and 10 kHz sine-wave signals, the RDL ST-OSC2A offers a focused set of documented capabilities. It provides independently available fixed tones, two outputs for each oscillator, adjustable output from off to +10 dBu, and 200 Ω outputs for high- or low-impedance lines. Its internal AGC, balanced or unbalanced connection options, and SupplyFlex power configuration complete a practical signal-source package with clearly stated electrical and environmental requirements.