WILLTEK 8100 Series User manual

8100 Series General Purpose Receiver
User’s Guide
boosting wireless efficiency
User’s guide
Version 4.00

WARRANTY
HARDWARE: Willtek warrants its hardware products to be free from defects in workmanship
and materials, under normal use and service, for one year from the date of purchase from Willtek
or its authorized agent. Willtek certifies that all instruments are tested and inspected to comply
with the published specifications originating from the company.
If a product does not operate as warranted during the warranty period, Willtek shall, at its option,
repair the defective product or part (except batteries), deliver an equivalent product or part to
replace the defective item, or refund the purchase price paid for the defective product.
Transportation of the defective product or part to the factory or service centre is to be pre-paid by
the customer. All products that are replaced will become the property of Willtek. Any replaced or
repaired product or part has a ninety (90) day warranty or the remainder of the initial warranty
period, whichever is longer.
SOFTWARE: Willtek warrants that the software programs licensed from it will perform in
substantial conformance to the program specifications for a period of one year from the date of
purchase from Willtek or its authorized agent. Willtek warrants the magnetic media containing
software against failure during the warranty period. Sole obligation hereunder shall be (at Willtek
discretion) to refund the purchase price paid for any defective software products, or to replace any
defective media with software which substantially conforms to applicable published
specifications. Willtek makes no warranty that its software products will work in combination
with any hardware or applications software products provided by third parties, that the operation
of the software products will be uninterrupted or error free, or that all defects in the software
products will be corrected. Willtek will make reasonable efforts to provide compatibility, except
where the non-compatibility is caused by a defect in the third party’s product.
All information in this manual is given in good faith. However, Willtek Communications shall not
be liable for any loss or damage whatsoever arising from the use of this manual, the product
described in it or any errors or omissions in either.
Willtek Communications
Gutenbergstr. 2 – 4
85737 Ismaning
Germany
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.willtek.com

Willtek 8100 Series General Purpose Receiver Contents
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TABLE OF CONTENTS
ELECTROMAGNETIC COMPATIBILITY ........................................................................................7
CAUTION.................................................................................................................................................. 7
SECTION ONE −GENERAL INFORMATION .................................................................................. 9
1.1 SCOPE AND ORGANISATION OF THE MANUAL ............................................................ 9
1.2 PURPOSE OF EQUIPMENT AND GENERAL FEATURES................................................. 9
1.3 BASIC CONCEPT OF OPERATION ......................................................................................9
1.4 FRONT PANEL DETAILS .................................................................................................... 10
1.5 SIDE PANEL DETAILS......................................................................................................... 12
SECTION TWO −PREPARATION FOR USE..................................................................................13
2.1 INTRODUCTION................................................................................................................... 13
2.2 UNPACKING AND PHYSICAL INSPECTION................................................................... 13
2.3 INITIAL POWER-ON CHECKS............................................................................................ 13
2.4 FITTING ANTENNA ............................................................................................................. 13
2.5 BATTERY CHARGING AND CARE ................................................................................... 14
2.5.1 Introduction......................................................................................................................... 14
2.5.2 Battery Failure..................................................................................................................... 14
2.5.3 Battery Care ........................................................................................................................ 14
2.6 BATTERY REPLACEMENT................................................................................................. 15
SECTION THREE −SWITCHING ON............................................................................................... 17
3.1 PRELIMINARY ACTIONS ................................................................................................... 17
3.2 SWITCHING ON PROCEDURE...........................................................................................17
SECTION FOUR −BASIC DISPLAY AND CONTROL FUNCTIONS..........................................19
4.1 INTRODUCTION................................................................................................................... 19
4.2 DISPLAY FEATURES........................................................................................................... 19
4.2.1 Basic Display Features........................................................................................................ 19
4.2.2 SOFT Function Display Abbreviations............................................................................... 20
4.3 ROTARY CONTROLS........................................................................................................... 20
4.3.1 DISPLAY Control............................................................................................................... 20
4.3.2 LINE Control ...................................................................................................................... 21
4.3.3 SQUELCH Control............................................................................................................. 21
4.3.4 VOLUME Control .............................................................................................................. 22

Contents Willtek 8100 Series General Purpose Receiver
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4.3.5 TUNE/SELECT Control......................................................................................................22
4.4 PUSH-BUTTON CONTROLS................................................................................................22
4.4.1 CAL/LOCK Push-button.....................................................................................................23
4.4.2 SOFT/LIST Push-button......................................................................................................24
4.4.3 SCAN/PRTY Push-button...................................................................................................24
4.4.4 MEM/MODE Push-button...................................................................................................25
SECTION FIVE −DETAILED OPERATING INFORMATION......................................................27
5.1 INTRODUCTION ...................................................................................................................27
5.2 DETAILED CONCEPT OF OPERATION/METHODS.........................................................27
5.2.1 Normal and List Operation..................................................................................................28
5.2.2. Frequency and Memory Modes...........................................................................................28
5.2.3. Status List “Transfer” Function...........................................................................................28
5.2.4. Front Panel Controls............................................................................................................28
5.3 WARNINGS AND PROMPTS ...............................................................................................29
5.3.1. “ALL MEMORIES CLEAR”..............................................................................................29
5.3.2. “ALL MEMORIES DORMANT”.......................................................................................29
5.3.3. “AVERAGE.1s AND 1s ONLY FOR MODULATION MEASUREMENTS”..................29
5.3.4. “BATTERY FAIL” .............................................................................................................29
5.3.5. “BATTERY LOW”.............................................................................................................29
5.3.6. “BOTH PRIORITY CHANNELS DORMANT”................................................................29
5.3.7. “CANNOT STORE FREQUENCY WHEN IN MEMORY MODE”.................................29
5.3.8 “CAN ONLY USE LOCKOUT WHEN HOLDING” ........................................................29
5.3.9. “CHECK TYPE OF ANTENNA”.......................................................................................29
5.3.10. “LOCKED” .........................................................................................................................30
5.3.11. “LOCKOUT LIST CLEAR”...............................................................................................30
5.3.12. “LOCKOUT LIST FULL”..................................................................................................30
5.3.13. “MEMORIES FULL”..........................................................................................................30
5.3.14. “MICRO UNIT FAILURE”................................................................................................30
5.3.15 “MORE THAN ONE BUTTON PRESSED”......................................................................31
5.3.16 “NOT A SOFT FUNCTION”..............................................................................................31
5.3.17 “OUT OF LOCK” ...............................................................................................................31
5.3.18 “OVERLOAD”....................................................................................................................32
5.3.19 “OVER RANGE”................................................................................................................32
5.3.20 “PRESS FOR ONE SECOND TO COME OUT OF LIST”................................................32
5.3.21 “REDUCE RF INPUT LEVEL” .........................................................................................32
5.3.22 “REMOTE” .........................................................................................................................32
5.3.23 “ UNCAL”...........................................................................................................................32
5.3.24 “USE ONLY SOFT AND LIST”........................................................................................32

Willtek 8100 Series General Purpose Receiver Contents
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5.3.25 “USE ONLY SOFT LIST AND MODE”........................................................................... 32
5.3.26 “USE MEMORY LIST TO CHANGE VALUE”............................................................... 32
5.3.27 “VARIABLE AVE AND PEAK NOT SELECTABLE TOGETHER”.............................. 32
5.4 SET UP FACILITIES.............................................................................................................. 33
5.4.1 FUNCTION LIST Facilities ............................................................................................... 33
5.4.2 PRIORITY STATUS LIST Facilities ................................................................................. 41
5.4.3 LOCKOUT LIST Facilities................................................................................................. 41
5.4.4 MEMORY STATUS LIST Facilities.................................................................................. 41
5.4.5 MEMORY LIST Facilities.................................................................................................. 42
5.5 LEVEL (FIELD STRENGTH) MEASUREMENT ................................................................ 43
5.6 MOD (MODULATION/DEVIATION) MEASUREMENT................................................... 44
5.7 SIGNAL LEVEL DETECTION ............................................................................................. 45
5.7.1 Introduction......................................................................................................................... 45
5.7.2 AVERAGE 5 ms Detector.................................................................................................. 45
5.7.3 AVERAGE.1 s Detector ..................................................................................................... 45
5.7.4 AVERAGE 1 s Detector ..................................................................................................... 46
5.7.5 VARIABLE AVERAGE Facility ....................................................................................... 46
5.7.6 PEAK 1 s Detector.............................................................................................................. 46
5.8 AM/FM AUDIO DETECTORS.............................................................................................. 47
5.8.1 AM Detector ....................................................................................................................... 47
5.8.2 FM Detector........................................................................................................................ 47
5.9 SWITCHABLE AUDIO BANDPASS FILTER..................................................................... 47
5.9.1 Audio Filter OUT................................................................................................................47
5.9.2 Audio Filter IN.................................................................................................................... 48
5.10 IF BANDWIDTH SELECTION............................................................................................. 48
5.10.1 7.5 kHz Bandwidth .............................................................................................................48
5.10.2 15.0 kHz Bandwidth ........................................................................................................... 48
5.10.3 120 kHz Bandwidth ............................................................................................................ 48
5.11 CALIBRATION FACILITIES................................................................................................ 49
5.11.1 Introduction......................................................................................................................... 49
5.11.2 Calibration with AUTO CAL OFF ..................................................................................... 49
5.11.3 Calibration with AUTO CAL ON.......................................................................................49
5.12 SELECTABLE ATTENUATION........................................................................................... 49
5.12.1 Introduction......................................................................................................................... 49
5.12.2 Attenuation De-Selected (ATD) .........................................................................................50
5.12.3 Attenuation Fixed (ATF)..................................................................................................... 50
5.12.4 Attenuation Selected (ATS)................................................................................................ 50
5.13 SCANNING AND PRIORITY CHANNEL FACILITIES..................................................... 50
5.13.1 Introduction......................................................................................................................... 50

Contents Willtek 8100 Series General Purpose Receiver
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5.13.2 LIMIT SCAN Function .......................................................................................................51
5.13.3 MEMORY SCAN Function ................................................................................................51
5.13.4 PRIORITY CHANNELS Functions....................................................................................52
5.14 TYPICAL OPERATING FUNCTIONS..................................................................................52
5.14.1 Setting Up (FUNCTION and MEMORY LISTS)...............................................................52
5.14.2 Field Strength Measurement................................................................................................52
5.14.3 Modulation Measurement....................................................................................................53
5.14.4 Scanning ..............................................................................................................................54
5.14.5 Calibration...........................................................................................................................54
SECTION SIX −PROGRAMMABLE (RS-232-C) OPERATION....................................................55
6.1 INTRODUCTION ...................................................................................................................55
6.2 RS-232-C GENERAL INFORMATION.................................................................................55
6.3 SETTING UP THE RS-232-C INTERFACE..........................................................................56
6.3.1 Physical Connections...........................................................................................................56
6.3.2 Electrical Characteristics .....................................................................................................56
6.3.3 Data Format.........................................................................................................................56
6.4 COMMAND LANGUAGE.....................................................................................................57
6.4.1 Attenuation −AT.................................................................................................................58
6.4.2 Auto Calibration −AC.........................................................................................................58
6.4.3 Audio Detect −AD..............................................................................................................59
6.4.4 Audio Filter −AF ................................................................................................................59
6.4.5 Bandwidth −BW.................................................................................................................59
6.4.6 Baud Rate −BR...................................................................................................................60
6.4.7 Calibrate −CL .....................................................................................................................60
6.4.8 Channel Offset −CO...........................................................................................................61
6.4.9 Dwell Time −DT.................................................................................................................61
6.4.10 Frequency −FR...................................................................................................................61
6.4.11 Handshake −HS..................................................................................................................62
6.4.12 Level Detect −LD...............................................................................................................62
6.4.13 Level Units −LU.................................................................................................................62
6.4.14 Local Mode −LOC..............................................................................................................62
6.4.15 Lower Limit −LL................................................................................................................63
6.4.16 Memory Clear −MC............................................................................................................63
6.4.17 Memory Delete −MD..........................................................................................................63
6.4.18 Memory Recall −MR..........................................................................................................64
6.4.19 Memory Store −MS............................................................................................................64
6.4.20 Readout −RD......................................................................................................................64

Willtek 8100 Series General Purpose Receiver Contents
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6.4.21 Relative Value −RV........................................................................................................... 64
6.4.22 Remote Mode −REM ......................................................................................................... 65
6.4.23 Report Status −RS.............................................................................................................. 65
6.4.24 Scan −SC............................................................................................................................ 66
6.4.25 Signal Level −SG............................................................................................................... 67
6.4.26 Squelch Level −SQ ............................................................................................................ 67
6.4.27 Status −ST.......................................................................................................................... 67
6.4.28 Step Memory −SM............................................................................................................. 68
6.4.29 Tuning Steps −TS............................................................................................................... 69
6.4.30 Upper Limit −UL ............................................................................................................... 69
6.4.31 Variable Average −VA ...................................................................................................... 69
6.4.32 Variable Average Time −VT.............................................................................................. 70
6.4.33 Version Number −VN........................................................................................................ 70
6.5 ERRORS AND ERROR HANDLING.................................................................................... 70
6.5.1 Communication Errors........................................................................................................ 71
6.5.2 Errors Caused by Mistakes in the Argument ...................................................................... 72
6.5.3 Summary of Error Messages...............................................................................................72
6.6 ADVICE ON PROGRAMMING............................................................................................ 72
6.7 COMMAND SUMMARY ...................................................................................................... 74
SECTION SEVEN - TROUBLESHOOTING...................................................................................... 77
7.1 INTRODUCTION................................................................................................................... 77
7.2 received signal sounds noisy................................................................................................... 77
7.3 howling noise in loudspeaker.................................................................................................. 77
7.4 distortion on received signals..................................................................................................77
7.5 display corruption.................................................................................................................... 77
7.6 nothing on display ................................................................................................................... 78
7.7 no sound from the loudspeaker................................................................................................ 78
7.8 receiver does not respond to push buttons............................................................................... 78
7.9 signal level readout jitters........................................................................................................ 78
7.10 high residual reading on am or deviation bargraph................................................................. 78
7.11 deviation goes off scale when receiving a signal..................................................................... 78
7.12 receiver does not scan.............................................................................................................. 78
7.13 bargraph moves but level readout does not respond................................................................ 78
7.14 NO RS-232-C DATA.............................................................................................................. 79
SECTION EIGHT −SPECIFICATIONS AND ACCESSORIES...................................................... 81
8.1 INTRODUCTION................................................................................................................... 81
8.2 specification............................................................................................................................. 81

Contents Willtek 8100 Series General Purpose Receiver
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8.3 accessories AND OPTIONS....................................................................................................81
8.3.1 Standard Accessories...........................................................................................................81
8.3.2 Optional Accessories and Options.......................................................................................82
8.4 UPGRADE COMPATIBILITY...............................................................................................88
8.4.1 Firmware Upgrades .............................................................................................................88
8.4.2 Hardware Upgrades.............................................................................................................88
SECTION NINE −Willtek 8181 GPR DOWN CONVERTER OPERATING INSTRUCTIONS.89
9.1 GENERAL INFORMATION..................................................................................................89
9.2 OPERATION...........................................................................................................................89
9.3 SYSTEM SPECIFICATION −Willtek 8181 GPR Down Converter......................................90
PUBLICATION HISTORY....................................................................................................................91