Nti-audio Minirator MR-PRO Manuale Utente

OPERATING MANUALMINIRATOR MR2 / MR-PRO

10Display of the measured values (MR-PRO)1 Phantom voltage2 Balance3 ImpedanceOverview1 2 3

11 Power SupplyBattery operationIn order to be always able to use the Minirator flexibly, we rec-ommend the use of batteries. Only use 3x AA, LR6 b

12Do not use both outputs at the same time. The simultaneous use of both outputs could lead to a short-circuit in one of the generator outputs

13 MR-PRO outputsBoth the RCA and the XLR have a balanced output impedance of only 12.5 ohms. The level of the XLR output corresponds clos

14 3. Getting StartedInserting the BatteriesOnly use batteries from the same manu-•facturer.Replace the discharged batteries by new •ones. Do not mi

15 Fitting the Protective Shock Jacket (MR-PRO only)With the MR-PRO, you can fit the supplied protective shock jacket. This will prote

16Attaching the Hand StrapTo prevent you from accidentally dropping the Minirator, a hand strap is supplied with the instrument. You can also fit the h

17 Connecting the Minirator XLR connectionConnect the Minirator to your audio device using an XLR •cable. Note that the locking pin of th

184. OperationSwitching the Minirator on and offSwitching the Minirator onTo switch the Minirator on, press the “On/Off” button. • The display ligh

19 OperationSelecting a Test SignalYou have two choices for selecting test signals. You can use either the direct buttons or the rotary wheel

© All rights reserved. All information subject to change without notice Firmware MR2 2.15, MR-PRO 2.15 Version 2.15.01 / Apr 2014® Ministruments

20 OperationSetting the ParametersYou have two possibilities for setting up the parameters for the test signals. You can use either the direct buttons

21 OperationSetting the Sensitivity of the Rotary WheelYou can set up the sensitivity (step size) of the rotary wheel. To do this, proceed as

22 OperationSystem SettingsYou can adjust various system settings of your instrument. To do this, switch to System 1 in the menu bar using the rotary

23 FirmwareDisplay of the version number, with the possibility of carrying out an update for the MR-PRO 4 (see chapter “Updating the Firmware”).Di

24 OperationSelect a memory location with the rotary wheel and store •your configuration by confirming the selection with “Enter”.You have now

25 Calling up configurations Use the rotary wheel to select CONFIG in the menu bar.•Confirm with “Enter”.•The following menu is opened:Select “R

26 Test Signals5. Test SignalsSineCharacteristics and usePure sinusoidal signals are required for almost every audio measurement. The Minirat

27 Sweep Signal modesUsing the “MODE” symbol, you can run the test signal in the following modes:Once-only Plays the test signal onceContinuous

28ChirpCharacteristics and useA Chirp is the name for a signal whose frequency continually changes over time (also known as continuous sweep). It is u

29 ttPA USEtSCALEffSTOPfSTARTCHIRPt= LINtSCALE= LOGFading in and out of any Chirp signal gen-erates spurious frequency components, leadi

3 Table of Contents1. Minirator Basics ...4Introduction ...

30 Test SignalsPink Noise12Characteristics and useThe Pink Noise test signal has a high spectral density, an infinite period (> 100 years) and 20 kH

31 White NoiseCharacteristics and useThe White Noise test signal has a high spectral density, Gaussian amplitude distribution and an in

32 Test SignalsWave File Player (MR-PRO only)12Characteristics and useYou can play back your own test sequences with the MR-PRO. The test sequences wi

33 Test SignalsDefault wav-filesThe factory default wav-files are•Ansagen: Anpassen (German) • Testsequenz (German)Messages: Adjust (En

34 Test SignalsAll the sub-folders in the “Wave” folder •now appear in the folder selection 1. Add additional sub-folders to this folder lev

35 6. The Measurement Functions of the MR-PROThe MR-PRO offers the following measurement functions:Menu MeasurementsGenerator ImpedancePhantom Pow

36Meas. Functions (MR-PRO only)213R2R3XLRRCAMR-PROThe impedance and balance measurement can only be carried out down to a defined minimum level. I

37 Measuring Phantom Power VoltagesThe phantom voltage is necessary in connection with capaci-tor microphones in order to operate the impedance co

38Meas. Functions (MR-PRO only)XLR Cable TestThe MR-PRO supports a cable test function that quickly de-tects damaged XLR cables.The cable tes

39 Meas. Functions (MR-PRO only) The following is displayed on the screen:The cable has not been plugged in correctly. Check the cable conne

41. Minirator Basics IntroductionThank you for purchasing the Minirator. The Minirator is a pow-erful audio generator, offering a wide range of analog

40Meas. Functions (MR-PRO only)Impedance TestThe impedance test supports the verifications of distributed loudspeaker installations and shows

41 Impedance123How to measureConnect the load between Pin 2 + 3 of the XLR.•The absolute value of the impedance •1, the phase 2 and whether the

42Updating the Firmware7. Updating the FirmwareYou can find the installed firmware version of your instrument as follows:Select “System” in the menu bar

43 8. Tips and TroubleshootingResetting to the factory settingsIf the Minirator reacts unexpectedly, a reset to the factory set-tings might solve

44TroubleshootingFaults and their correctionFault Fault finding Cause RemedyThe Minirator does not gener-ate an output signal.“Mute” button blinks. You

45 Further information9. Further InformationMy NTi AudioRegister your instruments at My NTi Audio and benefit from the following possibilities:Free

46Further InformationWarranty ConditionsInternational warranty NTi Audio guarantees the function of its products and the in-dividual components for

47 Declaration of conformityCE / FCC Compliance StatementWe, the manufacturer NTi Audio AG Im alten Riet 102, 9494 Schaan Liechtenstein, Euro

48Technical Data 10. Technical Data MiniratorMR2 MR-PROOutputs Balanced XLR, unbalanced RCAphantom power resistantInputs DC power supply, USB DC power

49 MR2 MR-PROTHD+N 22 Hz to 22 kHz, average, @ 1 kHz, typical–90 dB (0.0032%) @ 8 dBu, Noise floor typ. 25 μV–96 dB (0.0016%) @ 18 dBu, Noise floo

5 NotesDanger of electric shockNever connect the instrument to a power output!Non-compliance could result in damage to persons or prope

2000 td 04.14

6AccessoriesAccessories available for the MR2 / MR-PRO:Pouch MR2 / MR-PRO NTi Audio # 600 000 302• The soft pouch protects the Minirator ag

7 2. Overview of the InstrumentConnectionsThe Minirator has the following connections:1 2 3 4 51 RCA output (unbalanced)2 XLR output (balanced)3 D

8Buttons and operating elementswavesensmutefreqesclevel1 2 34567894 Wave Selection of the test signal.5 Freq Setting the output frequency. Direct ju

9 The Screen DisplayThe main menu1 Menu bar2 Battery symbol: If the battery symbol lights up the batteries are almost com-pletely discharged and m