SES-VUA-1RU Balanced Stereo Analog Audio Reference VU Meter with 40-LED per Channel Display
The SES-VUA-1RU is a professional broadcast audio reference VU meter designed by audio engineers for audio engineers. It features a balanced stereo analog signal input and a controlled ballistic 40-LED display per channel.
Features
- Balanced Stereo Analog Signals
- Controlled Ballistic 40 LED per Channel Display
- Phoenix-Style Connectors for Hard Wiring
- User Controls: LED Brightness, Channel R and L Sensitivities, Mode
- Display Modes: Loudness, Loudness + Peak, Loudness + Peak Hold, Sum/Difference
- Compact Design: 1RU, less than 1-inch deep
Specifications
- Scale: -25dB to +14dB
- Voltage: 12VDC
- Current: 750mA
- Weight: 2 lb / 900 g
Item Includes
- (2) Phoenix-style Connectors
- (1) 12VDC/2A Power Supply
VU Meter Modes
1st Mode: Loudness
When the unit is first powered on, it operates in Loudness Mode. The left side of the left meter flashes to indicate this mode. Loudness represents the average power level of a signal, typically measured using the RMS method. It shows the average amount of music, volume, or power delivered over a cycle of an audio signal.
2nd Mode: Loudness and Peak
Pressing the mode button again switches the VU meter to Loudness & Peak mode. The right side of the left meter flashes. Peak mode displays the actual peaks of the audio signal, which are usually higher than the average level. This is crucial in digital audio to prevent peaks from exceeding 0 dbfs, which can cause clipping.
3rd Mode: Loudness and Peak Hold
An additional press of the mode button activates Loudness & Peak Hold mode. The left side of the right meter flashes. In this mode, the peaks on the VU meter remain lit for a longer duration, allowing users to observe critical peaks without missing them.
4th Mode: Sum and Difference
The final mode, Sum & Difference, is engaged with another press of the mode button. The right side of the right meter flashes. This mode combines the left and right signals. One meter displays the combined loudness of both signals (Sum), while the other displays the difference between them (Difference). This is useful for checking phase cohesion between channels (low sum and high difference indicate out-of-phase signals) and stereo spread (mono signals show high sum and zero difference).
Safety Precautions
- To prevent fire or shock hazard, do not expose this equipment to high humidity and/or dust. Do not use in unprotected outdoor installations or areas classified as overly damp or wet.
- The installation temperature should be between 32°F to 140°F (0°C to 60°C). Avoid direct sunlight exposure or extreme temperature changes over short periods.
- Do not disassemble the unit, as this voids the warranty.
- Do not drop the unit and avoid heavy impact.
- This unit should not be permanently installed without proper ventilation. Enclosure openings must not be blocked or covered to prevent overheating.
- Before cleaning, turn off the power and unplug the unit. Use a damp cloth; do not use liquid or aerosol cleaners.
- Do not overload outlets and extension cords to avoid fire or electric shock risks.
- Never push objects of any kind, including liquids, into the unit through openings, as they may touch dangerous voltage points or short-out parts, potentially causing fire or electric shock.
- Do not attempt to open or service this unit yourself. Opening or removing covers may expose you to dangerous voltages and other hazards.
- There are no user-serviceable parts inside the unit. If service is required, contact an authorized dealer or repair service company.
