DSP30/DSO30A Audio Spectrum Analyzer

DSP30 / 30A / 30B

Portable 30 channel digital 1/3 Octave Analyzer.

DSP30/30B microphone measurement range is 31dB to 123dB.

DSP30A microphone measurement range is 65dB to 160dB.

Captures full 85dB window with scales from ¼ to 5dB.

Filters exceed ANSI specs.

Comes with RS232 computer interface.

A Demo Program is available. Download it here.

Click here to read a review by Jim Gundlach, noted audio consultant.

dsp30_c The DSP30 analyzes The NBA Finals at the Meadowlands! ( full story)

The following standard features are supplied...

DSP30: Model MK8A - 600 ohm omni-directional electret condenser instrument microphone.
DSP30A: Model MK160 - 600 ohm omni-directional electret condenser instrument microphone.
DSP30B: - With Intelligibility Package - Model TEF04 instrument microphone, Serial port, OPTSTIcis ^tm CD, Rugged carrying case.
An 85dB window not limited by the display.
Automatic Sum & Average function to normalize readings and stabilize pink noise.
60 active memories.
IEC Flat, A, C or User designated curves.
A Sum mode to sum and average response curves.
A Subtract mode to subtract one memory from another.
Keypad selectable filters: ANSI triple tuned or sharper for notching applications.
Scales from ¼dB to 5dB.
Multiple plot function.
Export file function.
Optional expansion features can be added anytime.
Available in Rack Mount (DSP30RM) and Computer Interface Only (DSPCIW) models.
All DSP series units can be interfaced with a computer using the RS232 port and available software.

SPECIFICATIONS

Measurement Range:

Microphone input: DSP30/30B: 31dB to 123dB SPL / DSP30A: 65dB to 160dB

Line input: -88dBm to +14dBm (.031mV to 3.88V rms)

Measurement window: 85dB

Inputs:

Microphone: Balanced, XLR 3 pin receptacle

Line: Unbalanced ¼" phone jack. 15k ohm impedance.

Outputs:

None (standard)

Printer port: DB25F (optional)

RS232 port: DB25M (optional), Standard on DSP30B

Center Frequencies:

ISO 1/3 octave between 25Hz - 20kHz.

Center Frequency Accuracy:

typically ±1%.

Relative Flatness Channel to Channel:

1/4dB.

Displays:

Audio Spectrum, 30 channel, 10 LEDs per channel, all channels scalable in ¼, ½, 1, 2, 3, 4, or 5dB SPL.

SPL & Reference readings are 3 digit via 7 segment LED readout.

Filters:

ANSI standard (triple tuned) & sharper than standard for notching applications.

Weighting:
IEC A, C, Flat or USER defined.

Decay Rate:
Fast = 34.7dB/s, Medium = 8.7dB/s, Slow = 4.3dB/s

Function Control:
16 button keypad.

Power Requirements:
Batteries: Eight "AA" alkaline or nicad..External: 12Vdc @ 500mA via 2.1mm jack

Approvals:

Emissions: - EN 55022 B - FCC Class B

Immunity: - EN 55024 B

Size (W x H x D); Weight:
10" x 10 ¼" x 2 ½"; 2 lbs.

Case Material:
High Impact ABS.

DOWNLOAD

How to install the Demo Program
Demo Program Win_Demo.Zip 192K zipped.

Download documents in Adobe® PDF format.
You will need a copy of the Adobe® Acrobat® Reader to view it.

DSP30 Manual 284K unzipped.
DSP30A Specification sheet. 8.5K unzipped.
DSP30 Article by Jim Gundlach. 17.3K unzipped

How To Install the Demo Program - Analyzer Page

Download file Win_Demo.Zip to a directory of your choice.
UnZip the file to a blank, formatted, floppy diskette.
With the floppy disc in the A: or B: drive:

For WIN3.xx - In program manager, select FILE, RUN
Type A: or B:Install
Click OK.

For WIN95/98 - Click START, RUN
Type A: or B:Install.exe, Click OK.