Video Chat with a Pro Audio Expert - Live

Dorrough Digital DBL-Scale Meter -39dB, 32-96k

BH #DO380D2 • MFR #380-D2
Print
Dorrough Digital DBL-Scale Meter -39dB, 32-96k
No Longer Available
No Store Display
Ask an Expert
800-606-6969

Dorrough 380-D2 Overview

The Dorrough 380D2 Digital Double Scale Loudness Meter-39dB, 32-96k is a two-channel digital loudness meter in AES/EBU linear style, designed for insertion directly into the digital data-stream. It has a dual-channel vertical linear display with 39dB headroom, and an external power supply. This model is designed for console mounting, rackmounting, or custom installations.

It is built with XLR, DIP switch assignments, and mini DIN pin out. A mating connector is prewired to the supplies power pack. A wired remote control option is also available.

Straight Line Display
The 380 Series is functionally identical to the 40 series, except that the 380s have a straight-line scale designed for applications with limited vertical space. These easy-to-read meters are made to install easily in a custom console or in a rack with optional rack mounts.
Dual Channel Meter
These meters are ideal for situations where many channels must be monitored in limited space, such as a mobile news van or crowded control room. The close side-by-side positioning of the two monitored channels facilitates critical comparisons.
Peak and Average Metering
The Dorrough 280 digital meters feature both peak and average level display simultaneously, over indication, and selectable peak hold. They conform to all AES 3 (1992) specifications, and are compatible to 96ks.
Right and Left Inputs for Stereo Mixing
With one instrument, the operator can easily see the stereo mix and avoid classic in-phase/out-of-phase problems as well as center channel buildup that causes a mix to seem louder. This is especially important in preparing stereo program material for broadcast, while still being able to maintain monaural compatibility.

Dorrough 380-D2 Specs

Input Impedance
20k Ohm balanced, 10k Ohm single-ended, +/- 2%
Common Mode Rejection Ratio
80 dB at 60 Hz, 60 dB at 20 kHz (balanced mode)
Input Sensitivity
-10 dB for full-scale display
Maximum Input Level
+24 dB before clipping
Signal Path Bandwidth
10 Hz - 25 kHz, +/- .25 dB
Signal Path Distortion
Less than 1% THD at 1 kHz, +24 dB input
Sum Error
Less than 0.1 dB at 1 kHz
Difference Error
Less than 0.1 dB at 1 kHz
Display Resolution
40 LEDs, 1 dB/LED except model 60D, +/- 0.25 dB.
Step Size Error
+/- 0.25 dB
Absolute Error
Full Scale -39 dBu: +/- 0.25 dB model
Drift
+/- 0.25 dB
Average Time Constant
600 mS, +/- 6%
Peak Acquisition Period
10 uS, to full-scale, sine input 25kHz
Peak Attack Period
Virtually Instantaneous
Peak Decay Period
180 mS, from full-scale to all LEDs off
Display Update Rate
Approximately 10 mS
Display Duty Cycle
Display Time, AVERAGE, PEAK HOLD - 75%; Display Time, PEAK - 100%
Power Supply Input Range
117/237 VAC RMS, -20% to +10%, 50-60 Hz
Calibration Controls
None needed
User Controls
Left/Right input sensitivity Option DIP Switch

A) Peak Auto [ON]

B) Difference Mode [ON/OFF]

C) Over Level Alarm [ENABLE]

D) Under Level Alarm [ENABLE]

E) Auto ARMP

User Port
DB-9 Connector

A) Alarm relay closure contacts 1 form C, 1A, 30V AC or DC

B) Mode control switch (user supplied)

C) PEAK function switch (user supplied)
Dimensions
1.5 x 7.0 x 5.0" (in.) (0.6 x 2.8 x 2.0cm)
Weight
Not Specified by Manufacturer

Dorrough 380-D2 Reviews

See any errors on this page?
Whatever You Need, We've Got It