Dorrough 10-A Analog Loudness Meter + 14dB
- Preço: $459.00
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Availabillty Details
FecharThis is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 days (subject to availability). Your order will be charged at time of shipment.
The 10-A Analog Loudness Meter +14dB is a smaller single channel version of Dorrough's standard 40-A loudness monitor, with Phoenix (euroblock) connectors. This meter requires rack mounting and has an external power supply.
- Actual Energy Display
- Dorrough Loudness Meters display actual energy content of the program material, regardless of frequency, while still indicating the peak amplitude of the complex audio signal. This feature allows all program material to be adjusted for equal perceived loudness while protecting the peak of the waveform.
- Peak and Average Level Metering
- The 10-A, like all Dorrough loudness meters, simultaneously displays peak and average. The relative difference, in dB, between these two ballistics is derived from the integration time of the persistence scale.
- 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.
| Input Impedance | 20k Ohm balanced, 10k Ohm single-ended, ±2% |
| Common Mode Rejection Ratio | 80dB at 60Hz, 60dB at 20KHz (balanced mode) |
| Input Sensitivity | -10dB for full-scale display |
| Maximum Input Level | +24dB before clipping |
| Signal Path Bandwidth | 10Hz - 25KHz, ± .25dB |
| Signal Path Distortion | Less than 1% THD at 1KHz, +24dB input |
| Sum Error | Less than 0.1dB at 1KHz |
| Difference Error | Less than 0.1dB at 1KHz |
| Display Resolution | Less than 0.1dB at 1KHz |
| Step Size Error | ± 0.25dB |
| Absolute Error | Full Scale -39dBu: ± 0.25dB model A,B,C |
| Drift | ± 0.25dB |
| Average Time Constant | 600mS, ± 6% |
| Peak Acquisition Period | 10uS, to full-scale, sine input 25KHz |
| Peak Attack Period | Virtually instantaneous |
| Peak Decay Period | 180mS, from full-scale to all LEDs off (models A, B, C) |
| Display Update Rate | Approximately 10mS |
| Display Duty Cycle |
Display Time, AVERAGE, PEAK HOLD - 75%
Display Time, PEAK - 100% |
| Power Supply Input Range | 117/237VAC RMS, -20% to +10%, 50-60Hz |
| 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" (1.7 x 1.2 x 0.8cm) |
| Weight | Not specified by the manufacturer |
Mounting
Item Requerido:
- Preço: $113.95
This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 days (subject to availability). Your order will be charged at time of shipment.
Cables
- Preço: $339.95
Adapters
- Preço: $3.77
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