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User Manual
A1
Audio Test & Service System
Version 2.0e
Mar. 98 / V2.0 / PhS, MBe
N:\#A1proj\User Manual\A1 UM V20\A1UM20_E.DOC
A1 Audio Test & Service System User Manual
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A1 Audio Test & Service System INTERNATIONAL WARRANTY
INTERNATIONAL WARRANTY
Limited Warranty
NEUTRIK guarantees the A1 Audio Test & Service System and its components
against defects in material or workmanship for a period of one year from the date of
original purchase for use, and agrees to repair or to replace any defective unit, at no
cost for either parts or labor.
Important
This warranty does not cover damage resulting from accident, misuse or abuse, lack
of reasonable care, the affixing of any attachment not provided with the product, loss
of parts, or connecting the product to any but the specified receptacles. This
warranty is void unless service or repairs are performed by an authorized service
center.
No responsibility is taken for any special, incidental, or consequential damages.
Take, or ship prepaid, your NEUTRIK A1 Audio Test and Service System to your
nearest authorized service center. Be sure to include your sales invoice as proof of
purchase date. All transit damages that may eventually occur are not covered by this
warranty.
Note
No other warranty, written or oral, is authorized by NEUTRIK.
Except as otherwise stated in this warranty NEUTRIK makes no representation or
warranty of any kind, expressed or implied in law or in fact, including, without
limitation, merchasing or fitting for any particular purpose and assumes no liability,
either in tort, strict liability, contract or warranty for products.
NEUTRIK AG
Im Alten Riet 34
FL-9494 SCHAAN
Liechtenstein
Tel +41 - 75 - 232 2424
Fax +41 - 75 - 232 5393
This instrument has been designed according to IEC Publication 348, class I, "Safety
requirements for Electronic Measuring Apparatus". The owner's manual contains
information for safe operation which should be followed by the user.
CE DECLARATION OF CONFORMITY
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A1 Audio Test & Service System User Manual
We, the manufacturer
NEUTRIK AG
Im Alten Riet 34
FL-9494 Schaan
hereby declare that this product was designed and manufactured in accordance with
the basic security- and health-requirements of EC-rules
73/23, 89/336, 89/392, 91/368, 92/31, 93/44 and 93/68.
This declaration becomes void in case of any changes on the machine without
written authorization by us.
Product name Analog Audio Measurement System
Type A1
Year of construction 1991
Applied harmonized - IEC 65, IEC 68-2-31, IEC 348
standards, in particular - EN50081-1, EN50082-1, EN50140, EN 61010-1
Date / signature of manufacturer Schaan, 28. 02. 1995
Position of signatory Product manager test instruments
Samples of this instrument have been tested and found to
conform with the statutory protective requirements.
Instruments of this type thus meet all requirements to be
given the CE mark.
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A1 Audio Test & Service System User Manual
TABLE OF CONTENTS
INTRODUCTION ............................................................................................. 9
Important User Information ......................................................................................... 9
How to Use this Manual .............................................................................................. 9
Brief Overview on the A1 ............................................................................................ 9
INSTALLATION ............................................................................................ 11
Inventory ................................................................................................................... 11
Options & Accessories ....................................................................................................11
Power Connection..................................................................................................... 12
Printer Connection .................................................................................................... 12
INPUT & MONITOR CONNECTORS ................................................................ 13
Input Wiring of Phantom Supply ............................................................................... 13
Selectable Input Impedances.................................................................................... 13
Balanced Signals ............................................................................................................14
Unbalanced Signals ........................................................................................................14
Monitor Outputs ........................................................................................................ 15
THE GENERATOR ....................................................................................... 16
Setting The Generator .............................................................................................. 16
Generator Frequency ......................................................................................................17
Generator Level ..............................................................................................................17
Channel Muting......................................................................................................... 18
Generator Overload .................................................................................................. 18
DISPLAY MODES ........................................................................................ 19
METER Mode ........................................................................................................... 19
The Generator Settings ...................................................................................................19
The Measurement Results ..............................................................................................19
Unit Selection..........................................................................................................................20
Analog Bargraph .....................................................................................................................20
Change the Bargraph Sensitivity .............................................................................................20
The INPUT Display..........................................................................................................21
GRAPH Mode ........................................................................................................... 21
Cursor Function in Graph ................................................................................................22
Y-Scaling .........................................................................................................................22
X-Scaling.........................................................................................................................23
SCOPE Mode ........................................................................................................... 24
THE ANALYZER .......................................................................................... 27
LEVEL Function ........................................................................................................ 27
Filters ..............................................................................................................................27
LEVEL REL Function ................................................................................................ 28
THD+N Function ....................................................................................................... 29
Filters ..............................................................................................................................29
External Synchronization.................................................................................................29
NOISE Function ........................................................................................................ 30
Noise Weighting Filter .....................................................................................................30
NOISE REL Function ................................................................................................ 31
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A1 Audio Test & Service System User Manual
CROSSTALK Function ............................................................................................. 32
Crosstalk (Absolute) ........................................................................................................32
Crosstalk (Relative) .........................................................................................................32
WOW & FLUTTER Function..................................................................................... 33
Setting the W&F Standards.............................................................................................33
Wow & Flutter Measurements (Replay Only) ..................................................................33
Wow & Flutter Measurements (Record to Replay) ..........................................................34
Wow & Flutter Analysis ...................................................................................................34
PHASE Function ....................................................................................................... 35
SWEEPS .................................................................................................... 37
Frequency Response Sweeps .................................................................................. 37
Y-Scaling & Units...................................................................................................... 38
Sweeps in Other Functions....................................................................................... 39
Cursor ....................................................................................................................... 39
X-Rescaling .............................................................................................................. 39
External Sweeps ....................................................................................................... 40
Preparing an External Sweep..........................................................................................40
Tape Sweeps ............................................................................................................ 41
PRINTOUTS ................................................................................................ 43
Printer Driver Selection............................................................................................. 43
Examples of Printer Settings ...........................................................................................43
HP Thinkjet .............................................................................................................................43
Epson FX80, IBM Proprinter XL...............................................................................................43
Printer Errors ...................................................................................................................43
FRONTPANEL SETUP .................................................................................. 45
APPENDIX .................................................................................................. 47
DIP Switch Settings .................................................................................................. 47
W&F Selection ................................................................................................................47
Front Panel Setup ...........................................................................................................47
Printer Settings................................................................................................................47
Overview .........................................................................................................................47
Centronics Interface.................................................................................................. 48
Pin Assignment ...............................................................................................................48
Timing Diagram ...............................................................................................................48
RS232 Interface ........................................................................................................ 48
Pin Assignment ...............................................................................................................49
Cables .............................................................................................................................49
MD9 female to MD9 female ....................................................................................................49
MD9 female to MD25 female...................................................................................................49
MD9 Female to MD25 Male.....................................................................................................50
TECHNICAL SPECIFICATIONS ....................................................................... 51
Generator.................................................................................................................. 51
Sweep Function ........................................................................................................ 51
Analyzer.................................................................................................................... 51
LEVEL Function ..............................................................................................................51
CROSSTALK and LEVEL SELECTIVE Function ............................................................51
NOISE Function ..............................................................................................................52
THD + N Function............................................................................................................52
WOW & FLUTTER Function and DRIFT .........................................................................52
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A1 Audio Test & Service System User Manual
Drift Measurement...........................................................................................................52
PHASE Function (Option) ...............................................................................................52
Frequency Measurement.................................................................................................52
SCOPE function ..............................................................................................................53
Filters ..............................................................................................................................53
Display ...................................................................................................................... 53
Display Modes.................................................................................................................53
Interfaces .................................................................................................................. 53
General Data ............................................................................................................ 53
NEUTRIK DISTRIBUTORS ............................................................................. 55
INDEX ........................................................................................................ 59
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A1 Audio Test & Service System User Manual
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A1 Audio Test & Service System User Manual
INTRODUCTION
Important User Information
The A1 complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions