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Dorrough 21A Vertical Analog Loudness Meter

B&H# DO21A
Mfr#
21-A

Price: $ 449.95

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Special Order
Important Notice!
This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 business days (subject to availability). You will be charged upon placing your order.

Protection Plans

None

2-Year : $31.99

3-Year : $36.99

No Payments for 90 Days! On purchases over $100 View Disclosures

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Dorrough 21A Vertical Analog Loudness Meter

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Features
Specifications

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, +/- 0.25 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

Step Size Error: +/- 0.25 dB

Absolute Error: +/- 0.25 dB

Drift: +/- 0.25 dB

Average Time Constant: 600 mS, +/- 6%

Peak Acquisition Period: 10 uS, to full-scale, sine input 25 kHz

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 (WxDxH): 1.75 x 8.5 x 3" (4.45 x 21.59 x 7.62 cm)

Weight: Not Specified by Manufacturer

What's in the Box

Dorrough 21A Vertical Analog Loudness Meter

2-Year Warranty

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