The Ultra-VU meter displays VU and peak levels on the same bargraph.
Tri-color LEDs allow the VU level to be shown as a green bar and the peak level to be
shown as a red dot. That way both levels can use the full meter range without confusion.
The Ultra-VU's dual bargraphs display the left channel above the right channel with scale markings in between.
Pressing the MODE button causes mono sum to be displayed on the lower bargraph and
phase to be displayed on
the upper bargraph. This unique phase display uses a red LED to show the location of the furthest left sound in the
sound field and a green LED to show the location of the furthest right sound. In this way the width and location of the
stereo image can be easily seen or adjusted. Problems with phase reversal or off center mono are also easy to detect.
Pressing the MODE button again activates
a filter which tailors the VU frequency response to track more closely the
perceived loudness of the signal. This allows better loudness matching between music and voice segments. Pressing
the MODE button yet again causes the meter resolution to expand around the reference point. The .2 dB per
LED resolution in this FINE mode makes precise level setting a snap.
A switchable hold feature supplies a momentary or continuous hold of the highest peak reading ensuring that
operators will always know if maximum levels are exceeded. The sensitivity of the clipping indicator can be set from
the front panel allowing the Ultra-VU to be used with multiple standards. The zero VU point is user adjustable allowing optimum use of the 70 dB meter range while the lighted zero reference marker ensures a clear reading of critical levels even from across the room. A second lighted marker provides a positive reference for peak program levels. The front panel brightness control allows the meter to be easily adjusted for ambient lighting conditions.
On meters with digital inputs, the Ultra-VU provides several auxiliary data displays. The sample rate is measured and
displayed while the auxiliary data is decoded to show the format and emphasis status.
The digital input versions accept
serial data in either professional or consumer format via a transformer isolated input that automatically locks to the
incoming sample rate. A pass-through mode allows the unit to monitor digital lines without the need for a distribution
amplifier. Analog input versions have bridging inputs that accept balanced or unbalanced signals while the gain trim
controls allow for easy calibration to any common reference level. And, if you want complete flexibility, choose our "B" version units that have both analog and digital inputs. These meters will automatically select the active input.
DSP technology ensures that, even with all these features, the Ultra-VU is a very compact meter.
And automatic self-calibration keeps the Ultra-VU's high accuracy stable over time and temperature.
One or two meters will fit in a one rack-unit enclosure with an internal power supply. A single meter in a portable desk-top enclosure
is available for field work.
Ultra VU Features
• Expanded range - 70 dB
• Expanded detail - 63 LED bargraphs
• Simultaneous Loudness & PPM Display
• Peak Hold or Max Hold
• Stereo Image / Phase Display Mode
• High resolution Fine mode
• Clipping indicator
• Channel data display on digital inputs
• User Adjustable Reference Point
• User Adjustable PPM Reference Point
• Brightness Adjustment
• Dual Analog & Digital inputs available
• Mix analog and digital inputs
• 1RU or Desktop Versions
• 1 or 2 Stereo Pairs in Rack Version
• Powerful DSP processing
Click for Ultra VU Specifications