Sadelco DisplayMax Operator`s Manual
Contents
1. 18 Download Print Using Windows 95 98 Hyper Terminal Connect the DisplayMax to the COM1 or COM2 IBM PC 9 pin port On the DisplayMax Make sure the Baud Rate is set to 9600 Press FNC Setup Down Arrow to Communications Set the Baud Rate to 9600 ESC from Setup On your computer To Open Windows Hyper Terminal Click on Start Programs Accessories Hyper Terminal Double Click on Hyper Terminal Icon The Connection Description Screen appears Enter a name and choose an Icon for the new connection The Phone Number Screen appears Click on the down arrow of the Connect Using Line Select Connect Direct to COM1 or whatever COM port you are using Click OK The COM 1 Properties Screen appears Select the following port settings Bits Per Sec 9600 Data Bits 8 Parity None Stop Bits 1 Flow Control None OK Click on Transfers Click on Capture Text Select a destination Directory and a destination File Name Click OK On the DisplayMax Press the DLOAD PRINT RECALL DELETE Key Select a file using the UP DOWN arrows Press F2 PRT Repeat for each file you wish to download Note You can also download using the F1 DLD key however this key is intended for use with the DisplayMax Spreadsheet Software and will not download all of the file header information When the File Transfer is complete Click on Transfers Stop Exit Hyper Terminal You can now Print the File using any word processing program Note Hyper Terminal will not auto2. Connect an RF signal source Press the red FULL SCAN key Use lt gt to scroll through channels Right side of unit Press ON OFF Press FNC LIGHT Press FNC UP DOWN ARROW Input F connector is located on the top of the meter Your DisplayMax will now tune measure and display all channels in the selected channel plan You can also tune channels by entering the Channel Number then ENT Customizing Your DisplayMax Factory default settings allow you to begin using your DisplayMax immediately However we recommend that you verify that the following user definable options match your requirements Make sure you are in the correct channel plan The Channel Plan name is located in the lower left corner of the display The factory default is EIA NCTA See Setup Menu Section 1 1 Make sure to select digital channels and delete unused channels See Setup Menu Section 1 2 Make sure the correct measurement units have been selected Measurement units appear on the right side of the display just above the Video Level The factory default is dBmV See Setup Menu Section 2 7 Generic Keypad Controls for SETUP The easiest way to learn how to customize your meter is by actually doing it The following keypad controls work the same way in all SETUP menus FNC SETUP UP DOWN ARROWS ENT RIGHT LEFT ARROWS To access main SETUP menu To scroll to a desired line item To scroll through options in some edit boxes To sele
3. An adjustable bar graph threshold marker Leakage Detector Setup The following parameters can be modified by the user in Setup Leakage For both Search and Measurement Modes Default Frequency The initial frequency the DisplayMax will tune on start up The factory default is 133 250 MHz This is the video carrier of Channel 16 of the EIA channel plan If the current channel plan contains an active channel that matches the default frequency the DisplayMax will tune to that video carrier and remain in the Channel Tuning Mode If there is no active video carrier at the default frequency because it has been deleted or you are in another channel plan the DisplayMax will tune to the default frequency and switch to the Frequency Tuning Mode Note The length of your dipole must be adjusted for frequency See chart below Default Mode Determines which mode Search or Measurement will be activated on turn on Once in the Leakage Mode F3 toggles between modes Squelch Use to block audio detection of very low level leaks Peak Clear Default Manual setting peak level indicators remain until manually reset using F2 5 Sec Setting automatically resets peak level indicators every 5 seconds Video Gating Default setting of OFF allows detection of all types of signals ON setting allows only video signals to pass For Measurement Mode Only Default Distance The distance used in the automatic Leakage Measurement Calculation It can also be c
4. The measurement should be made 10 feet from the leak The measurement should be made 10 feet off the ground The measurement should be made at least 10 feet from any other conductors To measure a leak using the DisplayMax Tune to the video carrier of a channel between 108 and 140 MHz Attach a dipole antenna of the correct length for the chosen frequency Select the Leakage Measurement mode Verify that 10 ft has been selected as a distance factor Extend the non conducting telescoping mast to 10 feet KEEP AWAY FROM ALL POWER LINES Orient the dipole so that it is parallel to the leak Rotate the antenna to achieve the highest peak level Using the audio pitch and peak hold as aides Record the leak level manually or using the DisplayMax Save function Note If it is impossible to locate the antenna 10ft from the leak you may make the measurement at another distance Be sure to select the proper distance on the DisplayMax and document the reason for making the measurement at an alternate distance The DisplayMax automatically corrects the measurement for the selected distance LEAKAGE MEASUREMENT MODE PEAK BS Peak Measurement L I WE g Active Measurement 0 I oT 1 i Distance from leak Peak Level Indicator ZH 16 Active Level ANTENNA GIPOLE UA ITS Threshold Marker Change to Search Mode Switch from Frequency Set Distance to Leak to Channel 27 Appendix A Specifications FREQUENCY Range 600 and 600 CL
5. Adjacent channel check function compares each channel with the previous and subsequent active channel This can result in incorrect error messages when channels have been deleted and in the Favorite Channel Mode where channels are not usually adjacent to each other 15 To Check Levels Against Limits When the first scan is completed a check icon appears above the F3 softkey Use F4 to select the measurement location Drop Ground Block Tap or User Press F3 to check the signal levels against limits The information at the bottom of the display now shows the results of the check FULL CHANNEL CHECK Cursor automatically locates Failed Channel first failed channel Ss 1 ae a l data shown here 16 6 HI FILL SZAH ZHECK 133 FASSED Full system results shown here Jump to previous or next failed channels using special keys After checking Press Save if you wish to record the data Note The DisplayMax saves data in its raw form the check information is not saved However the saved data can be checked later in Recall or Download Press F3 or F1 to move the cursor to the Next Failed Channel Press F4 to change the check location and re check Use Right Left Arrow keys to scroll through all channels one at a time Press any red tuning key to resume meter operation Digital Channel Measurement To measure digital channels you must first designate them as Digital See Setup Menu Section 1 2 Edit the Current Channel Plan
6. Be sure to hold the dipole horizontally Rotate it on its axis to locate the leak source The best reception will occur when the dipole is parallel to the leak Keep in mind the leak source could be on either side of the dipole Tune to a video carrier in the 108 140 MHz range Note Channel 16 is the default setting in Leakage Setup Note The DisplayMax uses a wide IF 280 KHz for both signal level measurement and leakage detection This eliminates the need to adjust channel tuning for aeronautical offsets in either signal level or leakage modes Accurate readings are obtained by tuning to the standard frequencies of the video carriers Move the antenna through any area and along any cable where you suspect a leak Sources of leaks include Splices and fittings which may be loose corroded or damaged Customer hook ups using low grade devices no connectors missing terminations TV Sets VCRs and computers Poorly made fittings Damaged compressed or low quality cable Bad Converters Listen for any tone and watch the bar graph to determine if there is a leak The higher the pitch the larger the leak Press FNC Left Right Arrow to adjust volume level At 3 ft using the Rubber Duck antenna the DisplayMax will pick up leaks equivalent to 4 uV m at 10 ft No tone or bar graph indicates no leakage signal found Listen for a relatively slow warble tone It is important to differentiate leaks that are coming from your cable system
7. 9 9 Sadelco Part No CA20 Cloning Cable Use to connect one DisplayMax to another for cloning user setups 1 DCD DTR 4 2 RXD TXD 3 e5 04 o3 02 ol 09 e8 e7 06 3 TXD RXD 2 4 DTR DCD 1 5 GND GNDS5 6 6 Pin 6 s can be connected or not 7 RTS CTS 8 8 CTS RTS 7 Q 9 Pin 9 s can be connected or not Sadelco Part No CA30 Modem Cable Use to connect DisplayMax to a standard 25 pin modem for remote operation 3 3 123456 7 89 10 11 12 13 e5 e4 03 02 ol 7 WEERA 8 O oo Oo 0000 00 09 e8 e7 06 P 0000008000000 ae 1415 16 17 18 19 20 21 22 23 24 25 7 5 8 4 20 1 6 6 Pin 6 s can be connected or not 9 9 Pin 9 s can be connected or not 30 Appendix D Trouble Shooting Guide The following trouble shooting guide will help you solve many common problems If you need additional assistance call Sadelco toll free from anywhere in the USA at 1 800 569 6299 Worldwide call 1 201 569 3323 or e mail us at sadelco aol com Meter won t hold a charge Make sure you are using correct charger Sadelco P N T70 1 amp 12VDC output center pin positive Make sure electrical outlet is active overnight Make sure meter is turned off during charging Charge for a minimum of 4 hours Verify Charger not defective With charger plugged in and meter turned on battery voltage should read 8 4V Signal Level reading is incorrect Make sure correct channel pla
8. Once in the sub band A number followed by ENT tunes a sub band channel The Right Left Arrows do not scroll out of the sub band Sub band channels can also be accessed one at a time in the Single Channel Mode Press the Left Arrow in the Single Channel Mode to scroll below Channel 2 or the Right Arrow to scroll above the highest active channel C N and Hum measurements can be made on sub band channels Checking Levels Against Limits Full Scan Favorite Channels Sub Band and Zoom Modes can all be automatically checked The signal levels of both active scans and previously recorded ones can be instantly checked against FCC or user defined limits Four separate sets of limits Drop Ground Block Tap and User have been factory pre set Each of the four sets of limits can be edited by the user See Setup Menu Section 3 0 Edit check Limits The following automatic tests are performed for each active channel ANALOG Minimum and Maximum Video level Minimum and Maximum Delta Video Audio Maximum upper and lower Adjacent Channel Level Maximum Video Variation of all checked channels DIGITAL Minimum Digital Average Power Maximum Digital Average Power Maximum upper and lower Adjacent Channel Level Maximum Digital Power Variation of all checked channels Note To avoid false error messages it is important to delete unused channels from the channel plan before checking See Setup Menu Section 1 2 Edit the Current Channel Plan Note
9. battery life or connect to charger and second disable the automatic shut off in the Meter Operation Menu automatic shut off is disabled when charger is plugged in 22 Leakage Detector CLI versions only There are two modes of leakage detection Search and Measurement The Search Mode is intended to help you locate leaks The Measurement Mode as the name implies allows you to make calibrated leakage measurements Leakage measurement even under the best circumstances can be tricky Environmental factors intermittent leaks and non CATV transmissions make it difficult to pinpoint the source of leaks Antenna considerations distance and frequency make accurate measurements difficult The DisplayMax leakage detector incorporates the following features to help make locating identifying and measuring leaks easier An audible tone with a pitch that varies with the relative strength of the leak A slow audible warble tone which distinguishes video leaks vs non video leaks A faster audible warble tone that helps identify specially modulated tagged channels A video sync pulse filter that distinguishes video leaks vs non video signals An adjustable squelch control A built in attenuator de sensitizes the leakage detector for near field detection A peak hold mode helps locate and record peak leakage levels On screen tuning and distance adjustment uV M measurement automatically corrected for distance antenna type and frequency
10. detailed instructions on changing these default settings Battery Timer The voltage drop of nicad batteries is non linear and changes with the age of the battery This makes it difficult to accurately predict remaining battery life using voltage In addition the power consumption for each user will vary depending on the use of lights volume and other meter functions 2 to 4 hours of continuous use We have included an elapsed time indicator to track the accumulated On Time between charges By resetting it after each charge you will be able to determine how long a charge lasts under your specific operating conditions This will help you maximize battery usage with each charge To reset the elapsed time indicator After fully charging the meter Press FNC BATT to access the Battery Screen Press ENT to reset the timer Press ESC to exit 11 Lithium Battery A lithium coin cell Sadelco P N BATO7 keeps the clock and RAM functioning even when the Nicad pack is fully discharged or disconnected for replacement This cell should never require replacement over the life of your meter Removal of this cell will result in loss of all user programming and setups Long term storage of the DisplayMax with no nicad battery or a dead nicad battery will deplete the coin cell requiring replacement Lights The DisplayMax has been equipped with a backlit LCD display to allow operation in all lighting conditions Use of the backlight will significantly
11. volume using FNC Left or Right Arrow Pop up instruction window will appear When the Audio function is activated in this mode the video level is frozen Single Frequency Mode To listen to the sound at any frequency press F4 Adjust volume using FNC Left or Right Arrow Pop up instruction window will appear This also allows listening for any anomalies between channels Leakage Detector Mode An audio tone varies in pitch with leakage level Adjust volume using FNC Left or Right Arrow Automatic Calibration The DisplayMax uses a combination of factory recorded calibration data and an on board precision white noise reference to maintain meter calibration Automatic calibration occurs upon initial turn on and at regular intervals while the meter is operating While the auto calibration should keep your DisplayMax within factory specifications indefinitely we recommend an annual factory calibration check 12 Signal Level Measurement General The main red tuning keys let you select groups of channels according to your needs SUB CHN ZOOM FULL FAV FRQ SCAN 9 Favorite Channels Sub band Channels Single 15 All Channel Channels Channels After you have selected one of these tuning modes the DisplayMax begins measuring both the audio and video carriers of all channels in that mode It keeps scanning and updating those channels until you select another mode FULL CHANNEL VIEW Use IN to adjust Video Levels Scale Aud
12. CATV plant to locate leaks and meet FCC ride out requirements However once a leak has been located measurements must be made from outside the vehicle Instructions for calibrated leakage measurement can be found in the next section of this manual However the first task it locate a leak For rough location purposes you may use a roof mounted monopole or dipole antenna Roof mounted dipole antennas should be oriented in the direction of travel Care should be taken to not catch overhead trees Dipoles should be positioned as close to the cable as possible passenger side of the roof Roof mounted monopole antennas should be mounted in the center of the roof as long as there are no other conductors which would effect its performance If your vehicle is equipped with roof mounted ladder racks or a bucket you may want to experiment using a known leak to find the optimal position for the monopole Signal leaks are often hard to locate Rain and wet ground temperature changes and wind can all effect the level of leaks Leaks may be active one day and gone the next Generally RF leaks will follow the path of lowest resistance This can be through space or along strand telephone or power lines Signal leaks propagate in waves These waves create patterns of rising and falling leakage radiation along the cable A single leak can therefore appear as a series of leaks as you drive parallel to the cable Most leaks will be greatest near their source On
13. HN FRQ key to switch to Frequency tuning Tune to an audio carrier Channel 16 audio is 137 750 by entering the frequency number then ENT To adjust the volume level press FNC Left Right Arrow Leakage has its own volume setting Listen to the steady tone This is the tone you will hear when the signal is not a video carrier Now press the CHN FRQ key again DisplayMax automatically tunes to the video carrier of the channel Listen to the warble tone generated by a video carrier This is the tone you are searching for when trying to find video leaks from your cable system Optional Some CATV systems use a special modulator that tags a specific channel to help differentiate their leaks from those of other systems or other signal sources If your system has such a tagger tune to the video carrier of the tagged channel and listen to the warbled tone You will notice that the warble generated by the tag is significantly faster than the warble of the normal video carrier You may also still be able to hear the slower warble along with the faster one Antenna Considerations Each antenna type has different characteristics While only a dipole can be used for official CLI measurements it is unwieldy and difficult to handle Therefore the rubber duck or monopole may be a better choice when calibrated measurements are not necessary or when searching The Antenna Select feature in Leakage Setup automatically adjusts the leakage measurement
14. I packages 47 600 MHz 800 and 800CLI packages 5 872 MHz Accuracy 20 KHz Resolution 125 KHz IF Bandwidth 280 KHz ANALOG CHANNEL MEASUREMENT Range 30 to 60 dBmV Accuracy 1 0 dB at 77 F Typ 0 5 dB 2 0 dB 0 to 120 F Typ 1 0 dB Resolution 0 1 dB LEAKAGE MEASUREMENT CLI Packages Only Tuning Range 108 140 MHz Resolution 25 KHz Measurement Range 5 5000 uV M at 3 Meters with dipole antenna Accuracy 1 0 dB at 77 F Typ 0 5 dB 2 0 dB 0 to 120 F Typ 1 0 dB Audio Warbled tone allows easy identification of tags and video Variable pitch aides peaking INGRESS SWEEP Sweeps Sub Band in 250 KHz steps DIGITAL CHANNEL MEASUREMENT Average Power Accuracy 1 5 dB at 77 F Typ 0 75 dB 2 5 dB 0 to 120 F Typ 1 25dB Type QAM QPSK VSB and QPR AUTO CALIBRATION Internal precision noise reference maintains calibration over product life Compensates for changes due to turn on drift temperature and aging of components Specifications subject to change without notice AUTOMATED TESTING Scan Rate 6 Carriers sec Storage 43 Scans of 135 Channels each 99 Single Channel Measurements C N Range 50 dB with carrier level of 15 dB Accuracy 2 0 dB at 77 F 3 0 dB 0 120 F HUM Range 0 5 Filter 20 200 Hz TILT Automatically calculated from user Selected carriers AUDIO Adjustable Volume waterproof mylar speaker GENERAL Dimension
15. Only 6MHz digital channels that match the channel plan can be measured For measurement of smaller bandwidth signals such as telephony contact Sadelco In the single channel mode the full bandwidth of the channel is measured and displayed along with the average power This mode allows for the frequency response of the channel to be viewed and also allows for accurate measurement of any type of modulation QAM QPSK QPR VSB In any scan mode Full Sub Fav Zoom only the center of the channel is measured and displayed as a single bar Digital channel measurements should be relatively close between the single channel mode and scanning modes Based on the full sweep of the measured channel the single channel mode will be inherently more accurate To fine adjust or correlate readings between the single channel mode and scanning modes a digital scan offset can be applied in the meter operations menu For standard QAM channels no offset should be required For measurement of 8MHz digital channels European Channel Plans set digital channel BW to 8MHz in the meter operations menu Caution Some HRC IRC systems add new digital channels using standard EIA modulators This may require measuring digital channels on a different plan than analog channels Contact Sadelco for a custom channel plan 16 Data Recording Printing and Downloading Storage Capacity Channel Scan Modes 43 scans Regardless of number of channels Modes include Sub Zoom Full S
16. Sadelco DisplayMax Operator s Manual This document contains information proprietary to Sadelco Inc The information in this document is not to be used or duplicated in any manner without prior written consent from Sadelco DisplayMax Manual Part No ST1008 Rev 08 31 2001 Copyright 1999 2000 2001 Sadelco Inc Patent Pending DisplayMax 600 47 600 MHz Scanning Signal Level Meter DisplayMax 600 CLI 47 600 MHz Scanning Signal Level Meter and Calibrated Leakage Detector DisplayMax 800 5 872 MHz Scanning Signal Level Meter With Sub Band and Ingress Sweep DisplayMax 800CLI 5 872 MHz Scanning Signal Level Meter and Calibrated Leakage Detector With Sub Band and Ingress Sweep Warranty Sadelco warrants all instruments against defects in material and workmanship for a period of twelve months after shipment Sadelco will repair or replace any assembly or component except batteries found to be defective under normal use during this period Sadelco s obligation under this warranty is limited solely to repairing any instrument which in Sadelco s opinion proves to be defective within the scope of the warranty when returned to the factory Transportation to the factory is to be prepaid by the purchaser Return transportation via UPS surface will be provided by Sadelco Should the customer request an alternate shipping method the customer will be solely responsible for any charges in excess of UPS surface rates This warranty does not a
17. UF HAIN MEM USE B p Gig To SELECT i hen ENT Select sub menus using N t en CHANNEL PLANE HETER OFERATION EDIT CHECK LIMITS INGRESS COMMUNI AT IOWS COWHER IGEMTIFICATIOH 24 HR FCC TEST HETER IMHFORHAT Ion LEAKAGE RESET FACTORY DEFAULTS Items being edited appear in this box USE GE To Go UF MENU 1 2 yy 5 q g o Setup Menu The following section lists all settings that can be customized by the user Keypad controls for selection and editing are similar for all Setup Menu Sections Detailed keypad instructions have been included for a few of the more complicated sections 1 0 Channel Plans 1 1 Selecting A Different Channel Plan DisplayMax comes preprogrammed with several standard channel plans NTSC HRC IRC AIR and PAL Additional standard and custom plans are available from the factory The factory default plan is EIA NTSC To Select a different plan Press FNC SETUP CHANNEL PLANS is the first menu item and will already be highlighted Press ENT to select SELECT A CHANNEL PLAN is the first menu item and will already be highlighted Press ENT to select Use UP DOWN Arrow Keys to scroll to and highlight a different channel plan if desired Press ENT to select Press ESC to exit sub menu Press ESC to exit SETUP 1 2 Edit the Current Channel Plan DisplayMax allows separate editing of each plan Multiple copies of the most common plan EIA have been included for users who operate in mu
18. calling and Deleting Files in the DisplayMax Files can be recalled and displayed one at a time on the DisplayMax Display Screen Once recalled the data can be checked against limits by pressing the F3 Check Key You can also change the test location by pressing F4 and then recheck the data again by pressing F3 You can even edit the check limits in Setup and then recheck the data Recalling Files Press the Dload Print Recall Delete key on the DisplayMax A List of all saved files is displayed The first saved file is highlighted Scroll to a different file if desired Press F3 to Recall the file and view it on the DisplayMax Deleting Files Individual files cannot be deleted Once the DisplayMax memory is full data can be downloaded for permanent archiving To delete All Files Press F4 then ENT Using Download Software to Create Excel Spreadsheets The Download Software package is not delivered with your DisplayMax To receive a free copy do one of the following e Download from our web site www sadelco com e Download package can be emailed to you e Floppy disk with printed instructions can be mailed to you Note Downloaded and emailed packages include full instructions as both doc and txt files Measurements made in any of the scanning modes Full Scan Zoom Favorite Sub 24 Hour and Ingress can be converted into Excel spreadsheets with pass fail data Single channel measurements Single Channel Single F
19. can Fav and Tilt Non Channel Scan Modes 99 measurements Modes include Single Channel Leakage C N Hum and Ingress Saving Measurements After completing a scan or test Press SAVE to record your measurement results Enter an optional file name for further identification or simply press ENT Use the alphanumeric keys and the right left arrows to enter file names Press Ent when complete Default file names are structured NNMMDD dld Where NN is the DisplayMax sequential file number MM is the Month and DD is the day Any characters of the default file name not overwritten will remain as part of the file name when the file is downloaded Each file is automatically time and date stamped and numbered with sequential file numbers You can save all of the special tests i e C N Hum Tilt Ingress and Leakage Measurement You can save scans of all tuning modes You can also save the signal levels after checking against limits Check Results however are not saved Once recalled or downloaded into the DisplayMax Download Software data can be checked against the original or new sets of limits The 24 HR Tests are automatically saved The following data are recorded along with your measurements A sequential file number your optional file name if entered the time date meter serial number employee id number channel plan measurement units calibration offset last factory calibration date test point location and the check limits Re
20. cecceccesescesecsecsecseseaseceeseese 4 Customizing Your Meter sccsccsccsccesccccceccecccecceecsecees 4 Setup Menu ai deca caspicesd sas aea ii a e ER 6 COMING oeseri serr rerent ess ecesess sete vcvesecebevesesdeSesesssenevesesteederesse 10 Meter Operation cccscccceccccccccccccccseccesccsessessessssecsesees 11 Battery s 2cecceccwecsesesccseseiceseveceasses sack cbesceseesicesioss cease se 11 Lights isos cdsss cise echt keene cecsve stews E sen sseceeecasecessess 12 Display Contrast cceccccccccccscccccccecseccesecceceess 12 SP CAD oes vices secu se see se seci ieee least se ndelececs dees cdesecdeseve of 12 Automatic Calibration ccccccceccecceeeseccesceceecees 12 Signal Level Measurement sceccecccecceccceceeccescceccecees 13 General bos os cee seetienenecssss ced erreen aoe ees 13 Single Channel Tuning ccccccccccccccecessecseseeees 14 Tuning by Frequency cccccecccceccccccececcesceceecees 14 Full Scan Tuming cccccccecccccccecceccccccceccsccseecees 14 LOOM so vieds sisevsee vs ekeees sees ve Sees tee de vieseie doe dec veuseeeeesssesesee 14 Favorite Channel Tuning ccccccecsecceceececceseeees 14 Tilt eesosa eteesi etesse se a sssr rOn o OSE os ro Te e ESK rsss 15 Sub Band 800 versions Only scssescececcecceceesees 15 Checking Levels Against Limits ssssseessssssseoeesessoressooeeeee 15 Digital Channel Measur
21. ct a highlighted line item for editing To finalize an edit To move the edit cursor when doing alphanumeric edits ALPHANUMERIC KEYS To change the character indicated by the edit cursor press once to select the number press again to scroll through alpha choices e g For the number 2 press the 2 Key once for A press it twice for B press it 3 times for C press it 4 times Use the Right Left arrow to move the cursor to the next position When finished Press ENT To change the sign of a number F1 F2 F3 F4 As indicated in display ESC To escape up one menu level To exit the SETUP mode Basic Method For Editing in Setup Press FNC Setup to access the Main Setup Menu Use UP Down Arrows to highlight the desired Setup Section Press ENT to select this section Use UP Down Arrows to highlight the desired line item within each Setup Section Press ENT to select the line item for editing When a line item has been selected it appears in the Edit Box at the bottom of the screen Use UP Down Arrows or Alphanumeric Keys to edit the line item Use Right Left Arrows to move the edit cursor position Press ENT to complete each line item edit 10 After a line item is edited the new value appears on the proper line and the edit box is blank 11 Use UP Down to select another line item or ESC to exit 12 To erase an alphanumeric character press the Zero Key twice until a blank appears PNDNBPYN 2 SET
22. dentify each function F RIGHT LEFT ARROW KEYS In tuning modes move cursor to select next channel or frequency In Setup move cursor right or left With FNC increase or decrease volume UP DOWN ARROW KEYS In tuning modes adjust vertical scale on display In Setup scroll up or down the screen With FNC increase or decrease contrast INGRESS LEAKAGE TILT KEYS Used with FNC to select INGRESS LEAKAGE these modes CHN SUB FRQ ZOOM HUM C N 24 HR KEYS Used with FNC to select these modes MAIN TUNING MODE KEYS For selecting tuning modes SAVE Stores measurements in memory SAVE ENTER In tuning modes completes numeric channel entries In Setup completes edits DOWNLOAD PRINT RECALL DELETE Downloads prints recalls and deletes saved measurements HUM C N 24HR 2 ABC 3 DEF DLOAD PRINT RECALL ESCAPE Escape functions or go back up menus FUNCTION Used to ON OFF select Function modes Manual Power Switch indicated by blue markings ALPHANUMERIC KEYS In tuning modes LIGHT SETUP BATTERY CLEAR Clears a channel select channel when followed by ENT In setup Used with FNC to select these entry before it is finalized with select alpha or numeric characters to edit settings functions ENT Initial Startup 1 2 Connect the AC DC charger Turn your meter on Turn on the backlight if necessary Adjust display contrast if necessary
23. digital channels when being measured in a scan mode Sub Zoom Full Scan Fav This offset may be required when measuring non QAM signals in the scan mode See Digital Channel Measurement 3 0 Edit Check Limits Four sets of check limits for analog channels have been factory preset These limits can all be edited by the user The factory defaults are ANALOG CHANNELS DROP GBLK TAP USER Minimum Video Level 00 0 03 0 03 0 00 0 Maximum Video Level 15 0 18 0 18 0 15 0 Maximum Delta Video Level 10 0 10 0 10 0 10 0 Minimum Delta Video Audio 10 0 10 0 10 0 10 0 Maximum Delta Video Audio 17 0 17 0 17 0 17 0 Maximum Adjacent Channel 03 0 03 0 03 0 03 0 DIGITAL CHANNELS DROP GBLK TAP USER Minimum Digital Average Power 8 0 5 0 5 0 8 0 Maximum Digital Average Power 07 0 10 0 10 0 07 0 Maximum Adjacent Channel 03 0 03 0 03 0 03 0 Minimum Delta Digital Level 10 0 10 0 10 0 10 0 4 0 Ingress Reference Level Line Range 35 to 60 dBmV Reference Level Line Factory Default is 20 dBmV Sweep Range 5 125 MHz to 40 0 MHz Factory default is full sweep range Range can be narrowed for faster sweep period of small bandwidth 5 0 Communications 5 1 Baud Rate Select 19200 9600 4800 2400 1200 Factory default is 9600 5 2 Clone Sets DisplayMax in SEND RECEIVE or DISABLE Factory default is DISABLE Cloning will transfer all user customizable settings to other DisplayMax meters except the following Employee Name ID Number Clone Settin
24. e way to find the source is to slowly travel along the cable while monitoring the rising and falling pitch of the DisplayMax The peak hold function of the display will also help you identify the location where the leak is strongest Conversely what may seem to be one large leak may be the composite signal of many leaks It is vital to locate the largest leak repair it and then search again for other smaller leaks that may have been masked by the large one Pinpointing the exact source of a leak can be difficult Once in the general area of a suspected leak it is often best to leave the vehicle and follow the techniques for hand held searching Triangulation using a hand held dipole antenna is often effective 26 Measuring Leaks The FCC requires that all leaks greater than 20 uV m at 3 meters must be documented and fixed in a reasonable amount of time Additionally all leaks greater than 50 uV m at 3 meters are to be included in the annual ground based CLI calculation As mentioned earlier making correct leakage measurements can be tricky Many factors effect the measurement including the antenna type frequency distance from the leak distance from the ground reflections from other objects and interference from other signals Therefore the FCC has prescribed the following measurement requirements The measurement instrument must be able to detect leaks of 20 uV m at 3 meters The leak must be measured using a dipole antenna
25. ement scsceccssccccccscesceceecessees 16 Data Recording Printing and Downloading scsseseeseeees 17 Storage Capacity cicccieicccccsse ccieereeededeeseeeetevevecseeesenee 17 Saving Measurement cscsceccssecceccecsccecceceeseeses 17 Recalling and Deleting Files c ccssececcescecceceeees Creating Excel Spreadsheets scecccscccscccccecseeees Download to Windows 3 11 Terminal cceceeeee 18 Download to Windows 95 98 HyperTerminal 19 Print Direct to Serial Printer cccccssecsecsececeeees 19 24 Hour Testing ccccssesceccccssccccccccccesecessecsessscssseceeses 20 FAUT sisenes naa eae aE a acest seueses obo a ect eiuees 21 Carrier to NoiSe cccceccececccccccccceccecessesceccecesseeeceeseeees 22 Ingress Sweep 800 versions Only cscsccccecceccccccceccesecees 22 Leakage Detector CLI versions only ceseeecceccecceeceeece 23 Appendix A Specifications cccccccecceccececcececcecsecsseseecs 28 Appendix B Accessories cccceceeccececceceececceeeesesseaseceeces 29 Appendix C Cable Wiring Diagrams sesecsesseceeceeeees 30 Appendix D Trouble Shooting Guide scsseesecceccseecees 31 17 17 DisplayMax Keypad Controls DisplayMax F1 F2 F3 F4 SOFT KEYS Function varies with selected operation Icons and labels in the display screen i
26. from other signals that are in the air such as motor noise aircraft communications etc The Displaymax incorporates a proprietary feature patent pending that produces a 4 Hz warble when the received signal contains video specifically horizontal sync pulses This feature allows the user to quickly identify the received signal as a valid cable leak or dismiss it as a non cable signal Keep in mind however that a cable leak may be masked by a larger non cable signal If a non cable signal is narrow in bandwidth such as a communications signal it may be avoided by simply tuning to a different channel Cable leaks should remain fairly constant within the Displaymax s leakage tuning range Locate the leak by moving the Rubber Duck around It will be most sensitive when held parallel to the leak and will null when pointed directly at the leak Listen for a faster warble on tagged channels Some cable systems employ a channel tagger that amplitude modulates one of the video carriers This modulation which is designed to help differentiate the source of a leak can be heard as fast warble on the audio tone of the leakage detector In order to differentiate this warble from the slower warble generated by all video carriers we suggest you create a test leak of your tagged channel and listen to the warble it creates With a little experience you will be easily able to distinguish the faster warble of most tagging systems Tagged channels are helpf
27. g Channel Plans must be identical in both meters for Clone to transfer channel plan edits 6 0 Owner Identification User can enter the following Company Name Address Telephone Number Employee Name Employee ID Number 7 0 24 HR Test Change the following 24 HR Test Parameters Parameter Factory Defaults Range 24 HR Test OFF Current Time HH MM SS Current Date MM DD YY First Scan Delay 05 MINS 0 59 MINS 00 HRS 0 4HRS Scan to Scan 00 MINS 0 59 MINS 06 HRS 0 23 HRS 00 DAYS 0 6 DAYS Number of Scans 04 SCANS 1 99 SCANS Maximum memory capacity is 43 scans Note All of the above can also be edited when FNC 24HR is selected Parameters cannot be edited once 24 HR Test has been started 8 0 Meter Information This section is not user adjustable Model Number Serial Number Sadelco Address and Telephone Numbers 9 0 Leakage Settings for optional built in calibrated leakage detector Available only on CLI versions Parameter Factory Default Range Default Frequency 133 250 108 140 MHz Default Mode SEARCH SEARCH or MEASURE Default Distance 10 Ft 10 Ft or 3 Meters actual distance changed from Leakage Mode Level Units uV M uV M uV dBmV dBuV Antenna Select Dipole Duck Dipole Monopole Antenna Factor 100 20 100 adjusts automatically with change in antenna select Threshold 20 uV M 5 99 uV M Squelch 0 0 20 steps Peak Clear Manual 5 Seconds 30 Seconds Off Manual Video Gating OFF ON OFF 10 0 Reset Fact
28. hanged during leakage measurements by pressing F4 then entering a new distance Threshold Adjusts the bar graph threshold marker Factory default is 20 uV M Level Units Factory default is uV m User can also select uV dBmV dBuV Antenna Select Automatically selects proper antenna factor for the Leakage Measurement Calculation In Leakage Search Mode antenna select does not need to match the antenna type being used Antenna Factor There are three programmed antenna factors 100 for the dipole 90 for the monopole and 65 for the rubber duck These factors which compensate for the lower relative gain of monopole and duck antennas are automatically applied to the Leakage Measurement Calculation While the FCC requires the use of a dipole antenna for official leakage measurements this feature allows you to make approximate measurements using a monopole or duck You can adjust each of these antenna factors to calibrate your specific measurement system meter antenna truck mount distance using a calibrated leakage field 23 Tone Identification Before working in the field we suggest you become acquainted with the various tones generated by the DisplayMax leakage detector Connect the DisplayMax to a cable drop with a video carrier level anywhere from 20 to 0 dBmV higher signals will overload the detector Press FNC Leakage to enter the Leakage Search Mode use F3 to toggle from Leakage Measurement if necessary Press the C
29. io Levels Channel Cursor Favorite Channel ID Reference Lines FAVORITE A deo Channel Number CH HJG i gd 7 1 cH Video Level CES Channel Name WlO 295 250 Audio Level Video Frequency AUD 299 750 Aud Audio Frequency THH FLAY NCTA Delta V A Channel Pla Soft Keys Fl F4 f Test Location To change the cursor Channel Press Right or Left Arrow or use Number followed by ENT To change reference lines Press F2 to toggle between FCC 10 dB and None To change test location for check function Press F4 to toggle between Drop Ground Block Tap and User To check levels against limits Press F3 Check Inactive channels must be deleted in Setup for correct results See section 1 2 for details To change tuning mode Press another red tuning mode key The cursor will tune to the same channel in the new mode if it exists if not the cursor will tune to the first available channel in the new mode Attenuation and calibration are automatic 13 Single Channel and Frequency Tuning This mode is used to examine one channel at a time in detail All channels including sub band and digital channels can be examined in this mode Analog Channels Video Audio and delta VA Video Audio are displayed at the same time Right Left Arrows tune the next channel A Channel Number followed by ENT directly tunes that channel Press F4 to turn on the audio loudspeaker Press F1 to switch to Single Frequency Digital Channels Digital Chan
30. itations with this method Hum Measurement on Active Audio Carriers Tune to the desired channel in the single channel mode Press FNC Press Hum The DisplayMax automatically tunes to the audio carrier of the selected channel and measures all low frequency amplitude variations between 20 and 200 Hz Normal FM modulation on active mono audio carriers 25 KHz does not effect the Hum measurement Over modulation excessive FM deviation of mono carriers and the normal higher modulation of stereo carriers may result in erroneous Hum readings Hum measurements should be made only on properly modulated mono audio carriers If the picture quality is good and Hum readings are high on several channels recheck Hum after turning off the audio modulation Hum Measurement on Unmodulated Audio carriers Turn off the audio modulation of the channel s to be measured Tune to the desired channel in the single channel mode Press FNC Press Hum Hum Measurement on Unmodulated Video Carriers preferred method Turn off the video modulation of the channel s to be measured Tune to the desired channel in the single channel mode Press F1 to switch to the Frequency Mode tuning is now locked on the video carrier Press FNC Press Hum Note Excessive cross modulation may also result in false high hum readings Note If you don t like to HUM whistling is an acceptable alternative especially on a sunny day 21 Carrier to Noise Ratio Au
31. lphanumeric keys The name will appear in the edit box To enter the letter A press the Number 2 Key twice Then Arrow Right for the next character When finished Press ENT to finalize the edit 1 3 Restore The Current Channel Plan This function lets you quickly restore the full unedited channel plan that has been selected All user edits to the plan will be deleted Press FNC SETUP CHANNEL PLANS is the first menu item and will already be highlighted Press ENT to select Arrow down to RESTORE CURRENT PLAN Press ENT to select Press ESC to abort or Press ENT to restore the channel plan to its original form 2 0 Meter Operation 2 1 Current Time Time is always displayed in 24 hour military fashion HH MM SS 2 2 Current Date Date is always displayed as Month Day Year MM DD YY 2 3 Power Auto Off Automatic meter shutoff after last keypad entry extends battery life 5 Minutes factory default 10 Minutes Never stays on until manual shutoff 2 4 Lite Auto Off Automatic light shutoff after last keypad entry extends battery life 1 Minute factory default 2 Minutes Never light stays on until manually shut off or meter is turned off 2 5 Brightness LCD backlight brightness adjustment use Low for maximum battery life High Low Medium factory default 2 6 Beep Turn Keypad entry Beep On or Off ON factory default OFF 2 7 Measurement Units Switch between dBmV and dBuV dBmV dB millivolts facto
32. ltiple systems with different sets of channels SETUP EDIT CURRENT PLAH HCTA USE B A TO SELECT CH HANE ea VIDFRG Indicates LO tilt channel X indicates deleted channel a w wf ra ra x a a t Indicates digital channel USE Ge To co UF MENU Press ENT to enter or edit name AME sd ea Ea pna EA Ea ree eran Press F1 to delete unused channels Press F4 to delete all subsequent channels and end the plan Press F2 to mark favorite channels Fav 1 is automatically LO Tilt Channel Press F3 to mark a digital channel To Edit a Channel Plan Press FNC SETUP CHANNEL PLANS is the first menu item and will already be highlighted Press ENT to select Arrow down to EDIT CURRENT PLAN Press ENT to select The first channel in the plan is highlighted It can be edited as follows F1 To delete the channel F2 To mark it as one of 9 Favorite channels Fav 1 is automatically designated as the Lo Tilt Channel The highest marked Fav is automatically designated as the HI Tilt Channel F3 To mark it as a digital channel Repeat as required for each channel Scroll down through all desired channels then F4 Marks the highlighted channel as last active channel in the plan and deletes all subsequent channels Press ESC to back out of each menu level press ESC three times to return to measurement mode Adding Channel Names You may also enter a four character name for each channel when it is highlighted Press ENT then use the a
33. matically create a new file name for each transferred file If multiple files are downloaded before clicking on Stop Transfer they will all be in the same file To create new file names for each transferred file you must repeat Start and Stop Transfer for each downloaded file Printing Directly to a Serial Printer Note Most printers are Parallel Type The following instructions apply only to Serial Printers Connect the DisplayMax to a serial printer using the Sadelco PC Download Cable P N CA10 In Setup Communications Baud Rate Match the DisplayMax setting to the fastest rate the printer will receive On the DisplayMax Panel Press the DLOAD PRINT RECALL DELETE Key then Select a file using the UP DOWN arrows Press F2 PRT Repeat for each file you wish to print 19 24 Hour Testing When activated provides automatic unattended testing The DisplayMax will scan and record all active channels of the selected channel plan The following parameters can be user adjusted either in Setup see Section 7 0 or directly from the 24 HR Mode Parameter Factory Defaults Range 24 HR Test OFF Current Time HH MM SS Current Date MM DD YY First Scan Delay 05 MINS 0 59 MINS 00 HRS 0 4HRS Scan to Scan 00 MINS 0 59 MINS 06 HRS 0 23 HRS 00 DAYS 0 6 DAYS Number of Scans 04 SCANS 1 99 SCANS Maximum memory capacity is 43 scans The data is automatically recorded Each scan is time and date stamped and named with its scan number After each sca
34. n the DisplayMax automatically shuts itself off It is then automatically turned on each time a scan is scheduled During a 24 HR Scan all keypad functions are locked out including the Manual On Off key In between scheduled scans you may use the DisplayMax in its regular modes If the DisplayMax is in operation when a scan is scheduled a pop up screen prompts the user to select one of the following options Start Scan Now Delay 5 Minutes Abort This Scan Abort Entire 24 Hr Test If no option is selected the scan will begin after a one minute delay Scan results can be checked against limits in Recall they can also be Downloaded and Printed DisplayMax Software allows checking and comparing of tests over time Important After enabling the 24 HR Test in the setup menu you must Press ESC to exit the menu and activate the test If the meter is turned off before Escaping the menu the 24 HR Test will not run Make sure there is sufficient battery power or connect the AC Charger before initiating a 24 HR Test 20 Hum The DisplayMax Hum detector is designed to measure Hum on unmodulated video carriers unmodulated audio carriers and modulated active audio carriers The proprietary algorithm requires 5 seconds to make a hum measurement The NCTA recommended practice is to measure Hum on unmodulated video carriers Since this is not always possible the DisplayMax can measure hum on active audio carriers However there are some lim
35. n has been selected Make sure analog and digital channels are set properly in Edit Channel Plan Menu Check measurement units in Meter Operations Menu dBuV will read 60dB greater than dBmV Check F connector for wear or dirty contacts Replace if necessary Cycle power to re initialize meter and trigger an auto calibration Meter does not compensate for test point offsets Some HRC IRC systems add digital channels using standard EIA modulators Leakage reading is incorrect Listen for 4 Hz warble tone If warble tone not present the received signal may not be a leak from your system Make sure original type F connector is used with short end connected to meter Also use flat and star washer with star washer making contact with metal housing Place duck antenna on a small jumper cable 2 to 3 ft If in the measurement mode make sure the correct antenna and antenna factor are selected If in the measurement mode make sure the correct distance to leak is entered Display Screen is too dark too light or not sharp Use FNC UP Arrow or FNC Down arrow to adjust screen contrast Use FNC Light to turn backlight on Adjust backlight brightness in Setup Meter Operations Cycle power to re initialize meter Display locks up keys do not work The keypad is automatically locked during carrier to noise and auto calibration operations this is normal Carrier to Noise can take up to 60 seconds to sample and find lowest noise readi
36. n the Zoom Mode such as the sub band channel T07 then Zoom will default and begin tuning with the first available channel Once in the Zoom Mode Right Left Arrows do not scroll past the 15 channels To change the center channel of the Zoom Mode Select a valid channel number then ENT Or use the Right Left Arrows then press Zoom again Favorite Channel Mode Displays up to nine user selected channels These can be any channels including sub band Each channel plan has its own set of favorite channels The lowest and highest favorite channels are automatically used for the Tilt Function The DisplayMax always needs at least one active favorite channel The lowest channel in the plan is automatically designated F1 Before you can change this you must first mark another channel as a favorite To select additional favorite channels see Setup Menu Section 1 2 Edit the Current Channel Plan 14 Tilt Displays a low and high channel and automatically calculates system tilt The lowest and highest Favorite Channels are automatically used as the Tilt Channels If no Favorite Channels have been selected the lowest and highest active channels in the plan are used as defaults Press FNC TILT to select this mode To select Tilt Channels see Setup Menu Section 1 2 Edit the Current Channel Plan Sub Band Mode Available only on 800 Series Meters Displays the T channels of the sub band Press the red Sub tuning Key to enter the sub band mode
37. nels must be specified in Setup Channel Plan Edit Current Plan In single channel mode the full bandwidth is swept and displayed along with the channel s average power Press F1 to change from single channel mode to single frequency mode Press F2 to toggle 10dB reference lines on or off Single Frequency Tuning From any single analog channel Press F1 The video carrier of that channel is displayed A Frequency Number followed by ENT tunes that new frequency Right Left Arrows increment tuning in 125 KHz steps Note F1 key returns you to the Single Channel Mode only if the tuned frequency is within the boundaries of a channel Use the red CHN FRQ key to return to the Single Channel Mode if the tuned frequency is not within a channel Full Scan Tuning This mode is used to scan measure and display all of the channels in your system at once At the end of the first scan you can check the results against the FCC or your own limits Note Sub band is displayed in its own mode and is not included in full scan Note Make sure to delete unused channels in the Setup Mode to prevent incorrect Channel Fail messages when using the Check Key Zoom The Zoom mode displays a close up view of 15 channels at one time It will show seven channels on each side of the cursor channel If the cursor is on one end of the spectrum fewer channels will be shown The Zoom Mode can be entered from any of the tuning modes Ifthe cursor channel does not exist i
38. ng If the keypad is locked up at other times cycle power using the ON OFF key On power up meter locks on the Sadelco logo screen Indicates an internal signal path problem Return meter to Sadelco If the ON OFF key is locked in the ON position and will not allow you to cycle power Short pins 5 and 9 of the RS232 connector by touching them together momentarily with any metal object This will manually re initialize the microprocessor The meter will turn off for a moment then turn itself on The keypad should now function normally RS232 CONNECTOR Short Pins 5 amp 9 together to reset Charge Jack 31 Notes 32 Notes 33
39. ory Defaults Resets all Factory Default Settings except Channel Plan Customization Cloning Cloning transfers all user customized settings from the Source meter to the Receive meter except the Employee Name Employee ID Number and the Clone setting Important Both Source and Receive meters must contain the same channel plans for a successful clone Receiving meter must have a frequency range equal to or greater than the Source Meter Both Source and Receive meters must be set to the same measurement units dBmV or dBuV before cloning To Clone additional meters from one source In Setup Communications Baud Rate Set the Baud Rate of both meters to 9600 Connect Source and Receive meters with Sadelco Clone Cable P N CA20 In Setup Communications Clone Set Receive meter to Receive Press ENT Set Source meter to Send Press ENT When this last step is completed meters are cloned Note Certain software revisions may not be compatible for cloning The meter automatically checks for compatibility before transmitting clone data If not compatible a warning message will display on the screen and clone will not occur 10 Meter Operation Battery Operation and Charging The DisplayMax is powered by 6 high energy nicad batteries The batteries may not be fully charged when you receive your meter Checking the Battery Voltage 1 Disconnect the charger 2 Press FNC BATT to display the battery screen 3 The operating voltage i
40. pply to any products repaired or altered by any persons not authorized by Sadelco or not in accordance with instructions furnished by Sadelco Ifthe instrument is defective as a result of misuse improper repair or abnormal conditions of operation the warranty will become void In doubtful cases we will contact the purchaser for non warranty repair authorization Please notify us if an estimate is required Sadelco assumes no responsibility for its products being used in a hazardous manner either alone or in conjunction with other equipment Sadelco assumes no liability for secondary damages and in any event Sadelco s liability for breach of warranty under any contract or otherwise shall not exceed the purchase price of the specific product shipped and against which a claim is made An RMA number is not required to return either warranty or repair units to Sadelco However Sadelco assumes no liability for any product in transit to Sadelco Please make sure to include a description of the problem or symptom along with your complete company name address telephone fax and contact person For Warranty or Repair Service return to Sadelco Inc 75 West Forest Ave Englewood NJ 07631 USA Tel 800 569 6299 USA Only Tel 201 569 3323 Fax 201 569 6285 e mail sadelco aol com Website www sadelco com Table of Contents Keypad Control Diagram cccccccccecceccecececceccecececeesees 3 Imitial Startup cccccccecceceeccc
41. reduce the operating time between charges and should only be used when necessary If no keypad entry is made an automatic timer shuts the backlight after 1 minute This timer can be changed to 2 minutes or completely disabled in Setup see Sections 2 4 and 2 5 The backlight will always go off when the meter is turned off Additional power saving is achieved by reducing the brightness of the display Backlight Setting Estimated Operating Time with full charge Light Off 4 Hours of continuous use Low 3 Hours Medium 2 5 Hours High 2 0 Hours Display Contrast The contrast of the display is sensitive to temperature It is automatically adjusted using the internal temperature sensor Additional adjustment may be necessary to optimize viewing Contrast settings do not effect battery life To adjust the display contrast Press FNC Up or Down Arrow Pop up instruction window will appear Press UP or Down as necessary Press ESC Audio Speaker In the signal level modes the audio speaker can only be used when tuning is restricted to a single channel or frequency When audio is available a loudspeaker icon appears press F4 to activate In the leakage detection modes audio is always available volume can be adjusted to full off The waterproof mylar speaker cone is sealed to the front panel This allows operation in wet weather without ingress of moisture Single Channel Mode To listen to the sound carrier of a channel press F4 Adjust
42. requency HUM C N Leakage and Tilt can only be downloaded using Microsoft Terminal or Hyper Terminal Microsoft Excel is required to view and print Excel spreadsheets It is not required to download and create spreadsheets 17 Download Print Using Windows 3 11 Terminal Connect the DisplayMax to the COM1 or COM2 9 pin port of an IBM type PC A 9 pin to 25 pin adapter can be used if your computer only has a 25 pin port On the DisplayMax Make sure the Baud Rate is set to 9600 Press FNC Setup Down Arrow to Communications Set the Baud Rate to 9600 ESC from Setup On your computer To Open Windows Terminal Double Click on Accessories Double Click on Terminal Icon Click on Settings Click on Communications and select the following settings Baud Rate 9600 Data Bits 8 Stop Bits 1 Parity None Flow Control None Connector COM1 or COM2 OK Click on Transfers then Receive Text File Select a destination Directory and a destination File Name Click OK On the DisplayMax Press the DLOAD PRINT RECALL DELETE Key Select a file using the UP DOWN arrows Press F2 PRT Repeat for each file you wish to download Note You can also download using the F1 DLD key however this key is intended for use with the DisplayMax Spreadsheet Software and will not download all of the file header information When the File Transfer is complete Click on Transfers Stop Exit Terminal You can now Print the File using any word processing program
43. ry default dBuV dB microvolts Note Switching measurement units will automatically change all display screens and channel checking limits The only function not effected is Leakage Detection which has independent user selectable measurement units 2 8 Analog Cal Offset Caution DisplayMax is a precision instrument with automatic self calibration using a built in white noise reference This offset allows the user to adjust the gain or loss of all analog channels by the same amount to match another instrument or external reference Before making any adjustments keep in mind that discrepancies of 2 0 dB between the readings of two signal level meters are possible and within manufacturers specifications each meter being 1 0 dB 2 9 Digital Channel Offset Caution DisplayMax is a precision instrument with automatic self calibration using a built in white noise reference This offset allows the user to adjust the gain or loss of all digital channels single channel or scanning mode by the same amount to match another instrument or external reference Before making any adjustments keep in mind that discrepancies of 2 0 dB between the readings of two signal level meters are common and within manufacturers specifications each meter being 1 0 dB 2 10 Digital Bandwidth Adjustment Factory default is set for 6 MHz digital channel bandwidth User can alternately select 8 MHz 2 11 Digital Scan Offset This offset is applied only to
44. s 4 25 Wide x 10 Long x 2 75 Deep 11 cm x 25 5 cm x 7 cm Weight 4 25 lbs 1 9Kg including case and batteries Operating Temperature 0 120 F 18 49 C Storage Temperature 4 140 F 20 60 C BATTERY Type 6 high energy sub C Nicad Charge Time 2 Hrs for 75 Charge 4 Hrs for 100 Charge Battery Life 4 Hrs Continuous backlight off Electronic Shut Off Saves power Extends operating time STANDARD CHANNEL PLANS EIA NTSC HRC IRC AIR VHF UHF PAL Custom plans available on request 28 Appendix B Accessories ACCESSORIES SUPPLIED at no additional charge Description Padded Nylon Case 110Volt AC Charger Nicad Battery Pack 12 Volt Car Charger Cable Operator s Manual Rubber Duck Antenna supplied only with CLI packages Download Software for Excel OPTIONAL ACCESSORIES Description Strandhook Handle PC Download Cable Clone Cable 220Volt AC Charger Variable Dipole Antenna w 10 Ft extension pole Magnetic Vehicle Mount Monopole Antenna Sadelco Part Number CASE05 T70 BAT07 CH04 ST1008 ANTOI SWwol Sadelco Part Number SH02 CA10 CA20 T70E ANT02 ANTO03 29 Appendix C Cable Wiring Diagrams Sadelco Part No CA10 PC Download Cable Use to connect a DisplayMax to an IBM compatible PC 1 DCD 1 2 RXD 2 3 TXD 3 4 DTR 4 5 GND 5 Note 9 pin to 25 pin adapters are available for computers that have only 25 pin connectors 6 DSR 6 7 RIS 7 8 CTS 8
45. s for each antenna type It has no effect on the operation when in the Leakage Search Mode Rubber Duck Antenna Sadelco P N ANTO1 included with all CLI versions of DisplayMax Used primarily to search for leaks in the home or in close proximity Not valid for making FCC CLI calibrated measurements Pick up pattern is radial with a null spot in direction antenna is pointing Half WaveVariable Dipole Antenna Order Sadelco P N ANTO2 The only type valid for FCC CLI calibrated measurements Length must be adjusted for each frequency see chart below Pick up pattern is a horizontal figure eight shape Elements must be extended and oriented parallel to the leak Channel Frequency Length of each element from side of box 98 109 275 24 9 99 115 275 23 5 14 121 2625 22 3 15 127 2625 21 2 16 133 2625 20 2 17 139 250 19 3 Quarter Wave Monopole Order Sadelco P N ANT03 Commonly used for vehicle mounted search applications not prone to snag like a dipole Not valid for making FCC CLI calibrated measurements Pick up pattern is doughnut shaped most sensitive to leaks parallel to all its sides Not good for pinpointing the source of a leak 24 Search Mode hand held Connect the Rubber Duck Antenna either directly to the F connector of the DisplayMax or using a three foot cable We recommend using the cable to allow easier movement of the antenna A dipole antenna can also be used for a hand held leakage search
46. s from 6 5 to 8 0 Volts At 6 9 Volts the Lo BATT warning screen will appear momentarily You will have approximately 20 minutes of battery life left Charging the Battery Use only the proper Sadelco Charger For maximum long term battery life allow battery to fully discharge before charging and fully charge before discharging The DisplayMax must be manually turned off for charging to take place When either the AC Charger or DC Vehicle charger is connected the automatic shut off is disabled The DisplayMax can run continuously using either charger but it will not charge while operating AC Charger Sadelco P N T70 for 110 V T70E for 220 V DC Vehicle Charger Sadelco P N CH04 Charge Time 2 hours for 75 of full charge 4 hours for 100 charge Run Time 4 0 hours of continuous use with the backlight off 3 5 hours with the backlight on low 3 0 hours with the backlight on medium 2 0 hours with the backlight on high Cold temperature will reduce operating time Battery Life Typically 500 charge discharge cycles Replace only with Sadelco P N BATO06 The meter can be left on charge overnight It will automatically go to a trickle mode after it is fully charged Power Saving Functions To help increase the effective battery life there are three user adjustable features Power Auto Off Factory Default is 5 minutes Light Auto Off Factory Default is 1 minute Brightness Factory Default is Medium See Setup Sections 2 3 2 4 and 2 5 for
47. tomatically measures the Carrier to Noise ratio of any active analog channel Press FNC C N DisplayMax first measures the video carrier of the cursor channel Then it hunts for a quiet frequency for measuring noise After finding this quiet frequency DisplayMax samples the noise level over time retaining the lowest level reading for noise Carrier measurements are made with a peak detector Noise measurements are made with an average detector The noise bandwidth correction factor is applied automatically before the C N is calculated and displayed Note The sampling time required for accurate on line noise measurement will range from 20 to 60 seconds During this time a Wait Message will appear For carriers between 47 and 550 MHz C N readings up to 45 dB can be made with carrier levels of 5 dB C N readings up to 50 dB can be made with carrier levels of 10 dB For carriers between 550 and 862 MHz C N readings up to 45 dB can be made with carrier levels of 10 dB C N readings up to 50 dB can be made with carrier levels of 15 dB External band pass filters will improve C N readings on fully loaded systems Pre amplifiers may be required if carrier levels are too low Note Automatic C N measurements cannot be made on digital channels However the carrier level and noise level of digital channels can both be measured and recorded independently To measure the noise of a digital channel you must shut off the channel Then measure it as yo
48. u would a digital channel After turning on the digital channel measure it in the normal manner Compare the average power level of the noise to the average power of the active digital channel Ingress Sweep 800 versions only Connect the DisplayMax to the Tap end of a cable drop to check the whole house for any unwanted signals that are either being generated in the house or are finding their way into the house wiring from some outside source DisplayMax sweeps the sub band in 250 KHz steps from 5 250 MHz to 40 MHz You can adjust this frequency range A narrower range increases the scan speed to help find intermittent ingress See Setup Menu Section 4 0 Ingress You can also adjust the Reference Line in Setup This line lets you easily spot unacceptable ingress levels It can be set anywhere from 35 to 60 dBmV Use the Right Left Arrow Keys or enter a frequency number to move the cursor to any frequency in the selected range for a precise reading The frequency and levels for the cursor are displayed in bold numbers The DisplayMax keeps scanning and updating the level for each frequency sampled The live levels are updated with each scan The peak levels for each frequency are held until the Peak Clear Key is pressed new tuning mode selected or meter is turned off Note The Displaymax automatically turns off after 5 minutes without a keypad entry To monitor ingress for an extended period of time first make sure there is sufficient
49. ul in overbuild situations where a cable leak may be from one of two systems Reduce the leakage detector gain if necessary If the leak is very large or you are very close to the source bar graph has peaked all the way to the top you may need to reduce the gain of the DisplayMax Just press the F4 key to reduce the gain by 20 dB Change channels If you are still unsure of the source change channels to see if the leak persists Most cable leaks will be detectable on more than one channel Switch on the Video Gating in Leakage Setup Optional 25 This filter is sensitive to the video sync pulses of TV signals If the tone and bar graph do not change when the video filter is switched on this indicates that the measured signal contains these sync pulses and is a TV signal If the tone and bar graph disappear when the video filter is activated the measured signal does not contain sync pulses and therefore is not a TV signal This does not guarantee that there is no leak of the CATV system It is possible for there to be both video and non video signals present at the same time If the non video signal is larger that the CATV leak it will mask the detection of the leak just as a large CATV leak masks the detection of smaller leaks LEAKAGE SEARCH MODE Peak Level Indicator press F2 to reset Active Search Level SQUELTH m GAIN REDUCED CHH FEAR Search Mode from a Vehicle The DisplayMax can be used for patrolling your
Download Pdf Manuals
Related Search