Dorrough 10-AE Analog Loudness Meter +43dB
Dorrough 10-AE Analog Loudness Meter +43dB
B&H # DO10AE MFR # 10-AE
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Dorrough 10-AE overview
- 1Description
The Dorrough 10-AE Analog Loudness Meter +43dB is a single-channel version of Dorrough's standard 40-A loudness meter with a display scale allowing 43dB of headroom in 1dB steps and Phoenix (euroblock) connectors. The headroom scale is identical to the AES/EBU Digital Standard.
This meter provides access phase correlation, peak hold, sum/diff, and reference mode allowing 0 reference setting to .1dB accuracy, directly or with the optional remote control. Rack mounting is required.
- Dual Displays
- With these easy to read monitors you can view two channels or projects simultaneously, side-by-side. They are made to install easily in a custom console or with optional rack mounts. Dorrough rack adapters for the model 12 series are available with cutouts for either single or double meters. Both are 2RU high and 19" wide.
- Peak and Average Level Metering
- The 10-AE, like all Dorrough loudness meters, simultaneously displays peak and average, in this model up to +43dB. The relative difference, in dB, between these two ballistics is derived from the integration time of the persistence scale.
- 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 causing a mix to seem louder. This is especially important in preparing stereo program material for broadcast, while still being able to maintain monaural compatibility.
- 1Description
Dorrough 10-AE 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 | Less than 0.1 dB at 1 kHz |
| Step Size Error | +/- 0.25 dB |
| Absolute Error | Full Scale -39 dBu: +/- 0.25 dB model A,B,C |
| 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 (models A, B, C) |
| 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 (WxDxH) | 4.25 x 3.0 x 2.0" (in.) (1.7 x 1.2 x .8cm) |
| Weight | Not Specified by Manufacturer |
| Packaging Info | |
|---|---|
| Package Weight | 1.5 lb |
| Box Dimensions (LxWxH) | 0.01 x 0.01 x 0.01" |
