- Automatic Reference Tones
- Verify Audio System Response
- Manually Selectable Audio Tones
- Line-Level Audio Output
- Balanced/Unbalanced Output
- Gain Trim for Each Frequency
The RU-OSC4A is the ideal choice in many installations where either manual and/or automatic audio reference tones are required. Output connections are made on the rear panel through full-size, clearly identified, barrier block terminals. The RU-OSC4A features four separate audio oscillators, operating at 100 Hz, 1 kHz, 7.5 kHz and 15 kHz. These frequencies provide quick, automatic verification of audio frequency response through a piece of equipment or an entire audio chain. A silent period between the 15 kHz tone and the 100 Hz tone provides time to verify system noise levels. | Frequencies: | 100 Hz, 1,000 Hz, 7,500 Hz, 15,000 Hz | | Output Level: | Each frequency individually adjustable Off to +8 dBu | | THD+N: | < 1% (1 kHz to 15 kHz); <3% (100 Hz) | | Residual Noise: | < -75 dB (referred to +4 dBu during silent period) | | Indicators: | Front-panel LED indicating selected channel; HOLD LED to indicate suspended sequencing | | Rate Control: | 3 sec. to 30 sec. (sequencing rate front-panel adjustable) | | Output: | 1 Balanced @ 150 Ω to drive high or low impedance balanced or unbalanced line | | Power Requirement: | GROUND-REFERENCED, 24 to 33 Vdc @ 75 mA | | Ambient Operating Environment: | 10° C to 55° C |
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