White Instruments 200 User manual

5 January 2005 –This contact update page has been added to the
Acrobat document you have downloaded. Please disregard any contact
information printed within the document.
Our Mailing and Shipping Address:
White Instruments Div. C Van R, Inc.
1514 Ed Bluestein Blvd., Suite 201 (for U.S. Mail)
Austin, TX 78721 U.S.A.
Phone: [phone]
Fax: [phone]
Main Email Address: [email protected]
World Wide Web Site: http://www.whiteinstruments.com/
Note: Repairs and packages should be shipped to Suite 202

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Dear System 200 Owner:
CONGRATULATIONS’. You have purchased the most advanced Real Time Analysis System ever
offered to the Audio Professional in this price range. As you become more familiar with its functions,
we think you will agree that its performance and features approach and often exceed those of analyzers
costing thousands of dollars more. We have done everything possible to make the operation of your new
System 200 Signal Analyzer simple and cybernetically human. We sincerely hope you will take the time
to thoroughly read and digest this manual as you become familiar with the System 200. If you have any
questions concerning its operation or specifications, please feel free to write me or call me any time.
Have a good day.
IMPORTANT NOTICE-REGISTRATION OF SYSTEM 200 SIGNAL ANALYZERS:
Features and functions of the System 200 Signal Analyzer are a result of its running COMPUTER
PROGRAMS which tell it what to do as opposed to Hard Wired Circuitry.
Like any computer, these programs need to be maintained from time to time in order to increase their
efficiency, correct errors, and add new routines.
White Instruments, Inc. intends to keep a file on each System 200 Signal Analyzer shipped.
It is therefore EXTREMELY IMPORTANT that we have current ownership information for each unit.
This information should include:
1. Owner’s Name
2. Owner’s Mailing Address
3. Owner’s Shipping Address
4. Owner’s Telephone Number
5. System 200 Mainframe Serial Number
If you are the original owner, please fill out and return the OWNER’S SERVICE CARD packed with
your analyzer. If you sell the unit, please be so kind as to pass along this manual to the new owner and
send us the above information. Also, please let us know if you should change
your address or telephone number.
Your cooperation in this matter will assure your receiving application bulletins, notification of option
availability and smooth system updating.

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Dear System 200 Owner:............................................................................................................................ 1
IMPORTANT NOTICE -REGISTRATION OF SYSTEM 200 SIGNAL ANALYZERS:...................... 1
1 UNPACKING:.................................................................................................................................... 5
1.01 INBOUND INSPECTION AND DAMAGE CLAIMS:............................................................ 5
1.02 INCLUDED WITH YOUR SYSTEM 200 SIGNAL ANALYZER:......................................... 5
1.03 WARRANTY: ............................................................................................................................ 5
2 POWER –CONNECTIONS AND SPECIFICATIONS:................................................................... 7
2.01 IMPORTANT CAUTION.......................................................................................................... 7
2.02 NOMINAL A.C. VOLTAGES AND POWER:......................................................................... 7
2.03 FUSES:........................................................................................................................................ 7
3 INPUT CONNECTIONS:.................................................................................................................. 8
3.01 FRONTPANEL CONNECTIONS:........................................................................................... 8
3.01.01 MICROPHONE INPUT CONNECTOR........................................................................ 8
3.01.02 MICROPHONE POWER............................................................................................... 8
3.01.03 LINE LEVEL INPUT CONNECTOR............................................................................ 9
3.02 REAR PANEL CONNECTIONS:.............................................................................................. 9
3.02.01 LINE LEVEL INPUT CONNECTOR............................................................................ 9
4 OUTPUT CONNECTIONS:............................................................................................................10
4.01 FRONT PANEL CONNECTIONS .......................................................................................... 10
4.01.01 PINK NOISE OUTPUT CONNECTOR ...................................................................... 10
4.01.02 MICROPHONE PREAMP OUTPUT.......................................................................... 10
4.02.01 OSCILLOSCOPE SYNC OUTPUT.............................................................................10
4.02.02 PINK NOISE OUTPUT................................................................................................ 10
4.02.03 OSCILLOSCOPE AND/OR PLOTTER PEAK OUTPUT.......................................... 10
4.02.04 OSCILLOSCOPE AND/OR PLOTTER AVERAGE OUTPUT................................. 10
4.02.05 PLOTTER HORIZONTAL OUTPUT......................................................................... 10
4.02.06 COMNON.....................................................................................................................10
4.02.07 MICROPHONE PREAMP OUTPUT.......................................................................... 11
5 SYSTEM INITIALIZATION:.......................................................................................................... 12
5. 01 GENERAL:...........................................................................................................................12
5.02 INITIALIZATION –THE dBm MODE: ................................................................................. 12
5.03 INITIALIZATION –THE dB/spl MODE:...........................................................................13
6 INPUT LEVELS:.............................................................................................................................. 14
6.01 CONTROL:............................................................................................................................... 14
6.02 RANGE:....................................................................................................................................14
6.03 DYNAMIC RANGE (Processing):...........................................................................................15
6.04 OVER RANGE CONDITION.................................................................................................. 15
6.05 INPUT PREAMP OVERLOAD:.............................................................................................. 15
6.06 UNDER RANGE CONDITION:.............................................................................................. 15
7 PROCESSING MODES:.................................................................................................................. 16
7.01 GENERAL:............................................................................................................................... 16
7.02 AVERAGE MODE:.................................................................................................................. 16
7.03 PEAK MODE:.......................................................................................................................... 17
9 FILTERS AND BANDWIDTH:...................................................................................................... 18
9.01 GENERAL:............................................................................................................................... 18
9.02 200-01-00 OPTION: ONE-THIRD OCTAVE/OCTAVE BAND, THREE-POLE FILTER
SET: 19
9.03 200-02-00 OPTION: ONE-SIXTH OCTAVE, TWO-POLE FILTER SET:...........................20

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9.04 200-03-00 OPTION: ONE-SIXTH OCTAVE, TWO-POLE FILTER SET:...........................21
9.05 OTHER FILTER SETS:...........................................................................................................22
9.06 BANDWIDTH CHANGE KEY:.............................................................................................. 22
9.07 FILTER CARDS, CODES AND JUMPERS:.......................................................................... 22
9.07.01 FILTER CARDS...........................................................................................................22
9.07.02 BANDWIDTH CODE.................................................................................................. 22
9.07.03 DISPLAY POSITION CODES AND JUMPERS ........................................................ 23
10 WEIGHTING................................................................................................................................ 24
10.01 GENERAL............................................................................................................................24
11 LEVEL AND AMPLITUDE DISPLAYS ....................................................................................25
11.01 SPECTRUM DISPLAY........................................................................................................ 25
11. 02 BROADBAND COLUMN:.................................................................................................. 25
11.03 POSITION DISPLAY: ......................................................................................................... 26
11.04 MONITOR DISPLAY:......................................................................................................... 26
11.04.01 LEVEL MODE .............................................................................................................26
11.04.02 TIME MODE................................................................................................................ 26
12 DISPLAY MODES ....................................................................................................................... 27
12.01 DISPLAY MODE CHANGE KEYS:...................................................................................27
15 OSCILLOSCOPE AND PLOTTER FEATURES............................................................................... 39
15.01 GENERAL.................................................................................................................................. 39
15. 02 PLOTTER HOOK-UP............................................................................................................... 40
15.03 OSCILLOSCOPE HOOK-UP:.............................................................................................42
15. 04 PLOT FUNCTION:.............................................................................................................. 43
15. 04. 01 GENERAL................................................................................................................ 43
15.04.02 FORMAT...................................................................................................................... 43
15.04.03 PLOTTING X AND Y AXIS SCALES ....................................................................... 43
15.04.04 PLOTTING DATA: FROM MEMORY........................................................................ 43
15.05 OSCILLOSCOPE MODE: WARNING ............................................................................... 46
15.05.01 GENERAL....................................................................................................................46
15. 05. 02 ENTERING OSCILLOSCOPE MODE ...................................................................46
15.05.03 EXITING THE OSCILLOSCOPE MODE.................................................................. 46
16 CURSORS ....................................................................................................................................47
16.01 GENERAL:...........................................................................................................................47
16.02 VERTICAL CURSOR:......................................................................................................... 47
16.03 HORIZONTAL CURSOR:...................................................................................................47
17 SYSTEM 200 T60 MEASUREMENTS –OPERATING SUMMARY........................................ 48
17. 01 INTRODUCTION................................................................................................................ 50
17.02 BACKGROUND.................................................................................................................. 50
17.03 THEORY OF OPERATION................................................................................................. 50
17.04 START TIME THRESHOLD .............................................................................................. 53
17.05 T60MODE –SELECTION:.................................................................................................. 56
17.06 T60MODE –VERTICAL CURSOR: ...................................................................................58
17.06.01 GENERAL....................................................................................................................58
17.06.02 MANIPULATION –VERTICAL CURSOR............................................................... 59
17.06.03 RESETTING THE ANALYZER TO TAKE A NEW SET OF AVERAGES OF T60
MEASUREMENTS.......................................................................................................................... 60
17.06.04 COUNTING THE NUMBER OF MEASUREMENTS IN AN AVERAGED SERIES
61
17.06.05 ERROR POSSIBILITY –FLASHING VERTICAL CURSOR...................................61

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17.06.06 OTHER VERTICAL CURSOR INDICATIONS......................................................... 61
17.07 MAKING T I’1F4SURElIENTS:......................................................................................... 62
17.07.01 GENERAL....................................................................................................................62
17.07.02 “ARMING” THE ANALYZER FOR A T60 MEASUREMENT................................. 62
17.07.03 T60 MEASUREMENTS USING THE ANALYZER’S BUILT-IN PINK NOISE
SOURCE 62
17.07.04 T60MEASUREMENTS USING AN OUTBOARD EXCITATION SOURCE...........64
17.08 DISPLAYING T60 MEASUREMENTS AND DECAY CURVES...................................... 65
17.08.01 GENERAL......................................................................................................................... 65
17.08.02 THE MONITOR DISPLAY ......................................................................................... 65
17.08.03 STORAGE OSCILLOSCOPE...................................................................................... 66
17.08.04 STRIP CHART RECORDER ....................................................................................... 66
17.09 EXITING THE T
60 NODE:.................................................................................................. 67
17. 10 EFFECTS OF THE ANALYZER ’ s FILTERS, SMOOTHING TIME CONSTANTS AND
PEAK/AVERAGE MODES ON T60 MEASUREMENTS:................................................................. 68
18 SERVICE NOTES ........................................................................................................................ 77
18. 00 Manual Revisions and Additions .......................................................................................... 77
18. 01 Retrofit Procedures ............................................................................................................... 78
18.01.02 Assembly Instructions....................................................................................................... 78
18.02 Performance Tests................................................................................................................. 85
18.02.01 Checkout Procedure ...................................................................................................... 85
18.03 Calibration.............................................................................................................................88
18.03.01 Filter Board Calibration Procedure............................................................................... 88
18.04 Documentation...................................................................................................................... 89
18.04.03 Wiring Diagrams & Connection Tables ....................................................................... 89
18.04.03.12 Calibration Pot Location...........................................................................................89

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1UNPACKING:
1.01 INBOUND INSPECTION AND DAMAGE CLAIMS:
Your System 200 Signal Analyzer has been carefully packaged to avoid damage in shipment. If
the unit has been damaged in shipment, SAVE ALL PACKING MATERIALS and file an
IMMEDIATE claim with the carrier.
Our instruments are shipped with full insurance unless the buyer instructs otherwise under his
self-insurance. Prompt inspection should be made upon delivery and any necessary claims made
against the carrier, NOT White Instruments, Inc.
If your unit is delivered damaged please notify us at once and we will be happy to cooperate in
obtaining repairs or a replacement.
1.02 INCLUDED WITH YOUR SYSTEM 200 SIGNAL ANALYZER:
The following should be packed with your unit:
1. A System 200 Signal Analyzer Mainframe
2. Ordered Accessories and Options, Installed
3. This Instruction Manual
4. A.C. POWER CORD
5. Patch Cord as follows:
0.25” 2-Conductor Phone to XLR Male
Type #A 101381 (see drawing in appendix)
Note: This noise cord is equipped with a 330 ohm resistor between pins 1 & 2 of the XLR
connector. Without this resistor there would be considerable high frequency roll-off of the
signal when the microphone level pink noise is fed to the microphone input. This is due to
the 15 volt microphone powering circuit.
6. One package containing four #10-24 x 0.5” Machine Screws and four Nylon Finishing
Washers
7. The attached Owner Service Card
Please complete and return immediately so that we may keep you continually updated –
Thanks.
1.03 WARRANTY:
1. LIMITED WARRANTY
All our products are guaranteed against defects in materials and workmanship for one year
from date of shipment. Our warranty is limited to repairing or replacing any product which
fails during the warranty period from normal use. White Instruments, Inc. will not be liable
for any damage resulting from the use of this instrument.

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2. DAMAGE IN SHIPMENT
Our instruments are shipped with full insurance unless the buyer instructs otherwise under
his self-insurance. Prompt inspection should be made upon delivery and any necessary
claims made against the carrier. Damage received during shipment is the buyer’s
responsibility. Please notify us at once, and we will cooperate in obtaining repairs or a
replacement.
3. RETURN SHIPMENT
Any instrument returned for repair should be safely packed and shipped PREPAID to us.
Collect shipments WILL NOTBE ACCEPTED unless previously authorized. An
explanation of the type of trouble encountered should accompany the instrument, or be sent
to us separately in writing, or be transmitted by phone. Repairs and checks will be made
promptly. Return will be made collect by the best way, or by the owner’s choice of method.
Address all inquiries to: Our current address found on our web site
http://www.whiteinstruments.com/

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2POWER –CONNECTIONS AND SPECIFICATIONS:
2.01 IMPORTANT CAUTION
BEFORE CONNECTING THE POWER CORD TO THE ANALYZER, CHECK THE MAINS
VOLTAGE AND ADJUST THE POWER SELECTOR SWITCH LOCATED ON THE REAR
PANEL TO THE APPROPRIATE VOLTAGE.
2.02 NOMINAL A.C. VOLTAGES AND POWER:
115 VAC at 50 or 60 Hz –.75 amps
230 VAC at 50 or 60 Hz –.375 amps
2.03 FUSES:
115 VAC = 1.5 amp Slo Blo
230 VAC = 0.75 amp Slo Blo

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3INPUT CONNECTIONS:
3.01 FRONT PANEL CONNECTIONS:
3.01.01 MICROPHONE INPUT CONNECTOR
TYPE: XLR Female
Pin No. 1: Shield
Pin No. 2: Circuit Low or “-“
Pin No. 3: Circuit High or ”+”
Input Impedance: 800 Q, Nominal Transformer Isolated and Balanced.
3.01.02 MICROPHONE POWER
The MICROPHONE INPUT CONNECTOR is equipped with 15 Volt
microphone power. Condenser microphones drawing 1 milliamp or less
current at 15 VDC can be powered directly from the System 200 Signal
Analyzer Mainframe.
Figure 3.01

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3.01.03 LINE LEVEL INPUT CONNECTOR
TYPE: .25” 2-Conductor Phone Jack with Normal Leaf
Tip: Circuit High or ”+” LINE LEVEL INPUT
Ring: See OUTPUT CONNECTIONS (Section 4)
Sleeve: Circuit Common
Input Impedance: 10k ohms, Minimum Unbalanced, Singled-Ended
Please refer to Figure 3.02
When a phone plug is inserted into the front panel LINE LEVEL INPUT
CONNECTOR, the analyzer is switched from the dB/spl MODE to the
dBm MODE.
Figure 3.02
3.02 REAR PANEL CONNECTIONS:
3.02.01 LINE LEVEL INPUT CONNECTOR
TYPE: .25” 2-Conductor Phone Jack
Tip: Circuit High or ”+”
Ring: See OUTPUT CONNECTIONS (Section 4)
Sleeve: Circuit Common
Input Impedance: >10k ohms, Minimum. Unbalanced, Single-Ended
NOTE: When using this INPUT, insert a dummy plug into the front panel
LINE LEVEL INPUT CONNECTOR. If this not done...
1. The analyzer’s PREAMP OUTPUT will be shorted to the LINE LEVEL
INPUT.
2. The analyzer will be in the dB/spL MODE instead of the dBm MODE.
3. See Section 3.01.03 and Figure 3.02