Minstruments Workshop 13. March 08, Frankfurt

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Minstruments Workshop13. March 08, Frankfurt

• The New Generation Of
• Audio Signal Generators

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New Signal Generators
Available now!
Minirator MR-PRO
Minirator MR2
Digirator DR2
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Index

• 1st Part Analog Audio
• Minirator MR-PRO
• New Firmware and Accessories
• Distributed Speaker Systems, 100V
• Applications MR-PRO and AL1
• 2nd Part Digital Audio
• Introduction Digirator DR2
• Dolby Surround System Setup

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Analog Audio
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Introducing Minirator MR-PRO

• Generator Functions
• Sine, White / Pink Noise, Sweep, Chirp, Delay,
  Polarity
• WAVE File Playback- STI-PA, voice messages-
  Sounds of music instruments
• Additional new wave files- Band-limited 1/3
  octave pink noise- Square waves

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New MR-PRO Firmware V2.01

• New Generator Features
• Fine Volt adjustments (e.g. "100 mV")
• Configuration files may be renamed when connected
  as a mass storage device to a PC

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New Minirator Accessory

• Minirator -40dB AdapterAttenuator for high
  quality microphone level signals (increases
  signal-noise ratio)
• Applicable for MR2 and MR-PRO.The MR-PRO
  specifications are- Output level range -80 ..
  18 dBu- Residual distortion (internal noise)
  -96 dBu-gt minimum S/N ratio _at_ -80dBu 16dB

Minirator -40dB Adapter
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Application for -40dB Adapter

• Output level -60 dBu
• S/N ratio 26 dBu

• Adjusted level -20 dBu
• Actual output level after -40dB Adapter -60
  dBu
• S/N ratio 66 dBu

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MR-PRO Measurements

• Measurement Functions
• Phantom Power
• Balance Indication
• New Detailed XLR Cable Tester
• New Impedance Phase
• New Apparent Power Phase

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MR-PRO Measurements

• MR-PRO measures Phantom Power
• Phantom Power should be 48V /- 10.
• Application
• Checking inputs of mixing console.

Channel 1 Phantom Power is 42.6V instead of 48V
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MR-PRO Measurements

• Minirator MR-PRO measures
• Balance
• Impedance
• Application
• Checking inputs of mixing console.

Channel 1 ok
Channel 2 defective
Mixing console with defective channel 2
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New MR-PRO Firmware V2.01

• New Features
• Detailed cable test fault information
• Impedance measurement screen with - Impedance
  Phase - Apparent Power Phase
• Faster impedance measurement

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Detailed Cable Test
Cable
R2 1k
R3 2k
MR-PRO Remote Plug
XLR In
XLR Out

• Works perfectly on open ended cables

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Impedance Measurements

• Minirator MR-PRO V2.01 measures
• Impedance
• Phase

• Applications
• Frequency crossovers
• Electronic circuits

R 10 kohm
C 56 nF
XLR Out
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Impedance Measurements

• Tailored for testing 100V systems
• Measurement frequency selectable 30 Hz 10 kHz
• Replaces common impedance meters e.g. TOA ZM104
  (320) or Goldline ZM01, RCS ZS-2, Sennheiser

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Distributed Systems, 100V
Distributed speaker system
2 W
2 W
2 W
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Distributed Systems, 100V

• Advantage 100V technology reduces line loses at
  long distances from amplifier to speaker. The SPL
  of each single speaker can be adjusted at the
  speaker. The amplifier output level is 100V at
  maximum load.
• 70V systems- Power consumption of speaker is
  only 50 compared to 100V- SPL reduced by 3dB
• 50V systems- Power consumption of speaker is
  only 25 of 100V- SPL reduced by 6dB

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Impedance Measurements

• MR-PRO Firmware V2.01 offers
• Impedance measurement with- Apparent Power
  Phase
• MR-PRO measurement unit VA

VoltAmpere VA
Watt W
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100V Loudspeaker Systems
Always disconnect the 100V amplifier for
impedance / power measurement with MR-PRO!
100 Volt Amplifier
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100V Loudspeaker Systems

• 100V Speaker System
• Power rating 2 W, typically _at_ 1kHz
• Transformer impedance 5 kohm
• MR-PRO measures
• Accurate Impedance 5.2 kohm
• Phase 13 inductive
• Power 2 VA(calculated by P U2/R
  100V2/5200)

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100V Loudspeaker Systems
100V Speaker System Power rating 2
W Transformer impedance 5 kohm Power 6 VA
max. 100 Volt
2 W
2 W
2 W
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100V Loudspeaker Systems

• Sample problems onsite
• Speakers not connected
• Speakers wrongly connected or other electric
  devices connected
• Connection to wrong transformer taping, e.g. 1W
  instead of 2W

only 2 of 3 speakers connected
one speaker wrongly terminated, 1W instead of 2W
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100V Loudspeaker Systems

• Sample problems onsite
• Short Circuits
• Mains Power Supply, use accessory MR-PRO
  70/100V Protection
• Other external voltages, such as fire alarm
  devices connected
• Bad connection cables

short circuit of speaker terminals
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100V Loudspeaker Systems

• Sample problems onsite
• Vibration and environment noise in the speaker
  area effects speaker impedance.
• Solution
• The MR-PRO impedance measurement includes
  appropriate technology for stable readings in
  noisy environments.

MR-PRO featuresstable impedance reading
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100V Loudspeaker Systems
max. 100 Volt
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New MR-PRO Accessory

• MR-PRO 70/100V ProtectionProtects Minirator
  MR-PRO against accidentally applied voltages
  during impedance or power testing at distributed
  70V/100V speaker systems.

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Application of 100V Protection

• MR-PRO is specified with max. input level
  60 VDC. During operation of speaker system
  the line level is up to 100V.

100 Volt Amplifier
100V Protection(adapter with fuses)
max. 100 Volt
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Application Minirator with AcoustilyzerHigh-res
olution Frequency Response
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High-res Frequency Response

• High-resolution frequency response up to 0.7Hz
  steps

Acoustics measured by Acoustilyzer AL1 FFT mode -
LEQ
MR-PRO with Chirp Signal
Audio Amplifier
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High-res Frequency Response

• High-resolution frequency response up to 0.7Hz
  steps
• MR-PRO Chirp Signal Set start, - stop frequency
  and time
• Acoustilyzer AL1 FFT-Mode Set LEQ and Range and
  resolution

MR-PROChirp Signal on
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Application Minirator with AcoustilyzerReverber
ation Time RT60 with 1/3rd octave resolution
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RT60 in 1/3 Octave Resolution

• The Acoustilyzer measures basically reverberation
  time RT60 in 8 octave bands in the range from 63
  Hz 8 kHz.

AL1 measures RT60 in octave resolution
Reverberation time RT60
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RT60 in 1/3 Octave Resolution

• New test signals extend the RT60 measurement to
  1/3 octave resolution.

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RT60 in 1/3 Octave Resolution

• MR-PRO offers additional test signals for
  extended 1/3 octave resolution.
• How to do
• Load 1/3 octave pink noise test signals on MR-PRO
• Test1_1/3_low pink noise spectra of the 1/3
  octave bands
• 100Hz, 200Hz, 400Hz, 800Hz, 1.6kHz, 3.15kHz
• Test2_1/3_mid pink noise spectra of the 1/3
  octave bands
• 125Hz, 250Hz, 500Hz, 1.0kHz, 2.0kHz, 4.0kHz
• Test3_1/3_hi pink noise spectra of the 1/3
  octave bands 160Hz, 315Hz, 630Hz, 1.25kHz,
  2.5kHz, 5.0kHz

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RT60 in 1/3 Octave Resolution

• Reverberation Time RT60 with 1/3rd octave
  resolution

Acoustilyzer AL1 measures RT60
MR-PRO with 1/3 octave Pink Noise Signal
Audio Amplifier
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RT60 in 1/3 Octave Resolution
Test 1

• Carry out individual RT60 measurements and load
  test results into automated Excel-sheet.

Test 2
Test 3
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Summary
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Acoustic Set Pro

• Minirator MR-PRO
• Acoustilyzer AL1
• MiniSPL
• Cable Test Plug
• Mains Power Adapter MR-PRO
• Adapter -20dB
• Minstruments Case

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Thank you.
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Digital Audio Set

• Digirator DR2
• Digilyzer DL1 with MiniLINK
• Mains Power Adapter DR2
• Mains Power Adapter DL1
• DR2 Transformers AES3id
• DL1 Transformers AES3id
• Minstruments Case