TVU - On-Screen Audio Level Display

THIS PRODUCT IS NO LONGER IN PRODUCTION

Inovonics' "TVU" displays stereo audio level metering on the screen of a television video monitor. It is connected in-line with the video signal and inserts an annotated stereo bargraph image into a corner of the picture.

The level display may be positioned anywhere on the screen and is switchable between American "VU" and European "PPM" metering standards.

Features


  • On-screen audio level display for teleproduction

  • NTSC/PAL compatible; VU/PPM switchable

  • Useful for broadcast, cable facilities, post-production

Product Image

Specifications


VIDEO

Signal Standards

NTSC as shipped; capacitor change required for optimum CCIR operation

Input

Bridging or 75-ohm-terminating; accepts 1-Volt p-p composite video with negative sync.

Output

75-ohm source, delivers 1 volt p-p into 75-ohm-terminated load.

Bandwidth

±0.5dB, 10Hz-10MHz; linear phase response over picture bandwidth.

AUDIO

Frequency Response

±0.25dB, 20Hz-20kHz

Balanced Program Line Inputs

Active-balanced, bridging; accommodate nominal “0VU” input levels between 0dBu and +15dBu.

Unbalanced “Semi-Pro” Inputs

Single-ended, bridging;accommodate input levels between-15dBu and 0dBu.

Input Range Adjustment

VU CALIBRATE (Input Gain) controls accommodate line level ranges noted above. PPM CAL controls offset PPM “zero” reference from zero-VU by -5dB to -13dB.

VU Display

Quasi-log-dB scale, +3VU to -20VU; measurement resolution approximately 0.15dB-per-step at 0VU reference level. 300ms VU integration per ANSI C16.5:1954.

PPM Display

Linear dB scale, +6dB to -22dB;approximately 0.3dB-per-step measurement resolution. 10ms PPM integration per BS4297:1968.

Peak Flasher (VU Mode Only)

Active in VU mode only. 10ms peak integration with trip level adjustable between 0VU and +15VU.

Power Requirements

105-130VAC (230V available),50/60Hz; 10 watts.

Size and Weight

8½” W x 1½” H x 6½” D; 3 lbs (shipping).

Optional Rack-Mount Panel

19” W x 1¾” H (1U); accommodates one or two (side-by-side) TVU units.