• Portable 30 channel digital 1/3 Octave Analyzer.
• Uses the power of your computer
• IBM compatible
• Windows software included
• Captures full 85dB window with scales from ¼ to 5dB.
• Filters exceed ANSI specs.

The following standard features are supplied..

• DSPCIW: Model MK8A - 600 ohm omni-directional electret condenser instrument microphone.
• DSPCIB: - With Intelligibility Package - Model TEF04 instrument microphone, OPTSTICistm CD and Rugged carrying case.
• RS232 interface.
• 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.
  
• Scales from ¼dB to 5dB.
• Multiple plot function.
  
• Export file function.
  
• Optional expansion features can be added anytime.
• Rack mount adapters available.
• Available in Rack Mount (DSP30RM) and Portable (DSP30) models.
• All DSP series units can be interfaced with a computer using the Optional RS232 port and available software.

SPECIFICATIONS

Measurement Range:

• Microphone input: 31dB to 123dB SPL
• 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.

Output:

• RS232 port: DB25M

Center Frequencies:

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

Center Frequency Accuracy:

• typically ±1%.

Relative Flatness Channel to Channel:

• ¼dB.

Display (via computer interface):

• Audio Spectrum, 30 channel, scalable in ¼, ½, 1, 2, 3, 4, or 5dB SPL .

Memories:

• via computer interface.

Function control:

• via computer interface.

Print function:

• via computer interface.

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

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:

• 7 5/8" x 1 3/4" x 9 3/4"; 2½ lbs.

Case Material:

• Painted aluminum.

DSPCIW Specification sheet. 8.4K unzipped.
DSPCIW Manual 109K unzipped.