St 5128s - Holland Electronics
Contents
1. 99 00 MHz C 82 2 dBi V 80 70 60 50 40 REF MAK P C ESC Fig 10 Multi Channel Spectrum Analyzer Measurement Mode In the multi channel spectrum measurement mode the F1 F4 soft keys have the following functions F1 REF Allows the y axis reference and power level coordinates to be changed in 10dB increments using the f keys F2 MAK Allows the marker to be moved to the frequency of a specific channel in the user defined channel list F3 P C Toggles between P recall a previously recorded value or C continue scanning F4 ESC Exits to the sub menu of the single channel measurement screen 18 Operation 1 To adjust the y axis power level coordinates and reference level a Press the F1 REF soft key b Adjust the y axis power coordinates and reference level in 10dB increments by using the ff keys To display the power level of a specific channel previously stored in the user defined channel list a Press the F2 MAK soft key b Move the marker to the frequency of the desired channel from the user defined channel list by using the keys The meter will display the frequency and measured power level of the selected channel at the top of the screen Press the CH key to save the power level measurement for the specific channel at the marker The letter S will appear at the top center of the screen This saved power level measurement ca2. 55 2 103 2 109 2 115 2 121 2 127 2 133 2 139 2 145 2 151 2 157 2 163 2 169 2 175 2 181 2 187 2 193 2 199 2 205 2 211 2 217 2 223 2 229 2 235 2 241 2 247 2 253 2 259 2 C C0 NG NG NG N3 N3 NO NG AIA 4 5 NO N3 NG s af af co o o T lolalNia aAa o lo ii LO co oo 1 oO OY gt S la 55 25 59 75 59 75 65 7 71 7 17 7 81 7 87 7 95 7 101 7 107 7 113 7 119 7 125 7 131 7 137 7 143 7 149 7 155 7 161 7 167 7 173 7 179 7 185 7 191 7 197 7 203 7 209 7 215 7 221 7 227 7 233 7 239 7 245 7 251 7 257 1 263 7 60 64 21 Audio carrier freq Audio carrier Channel Video Audio carrier freq freq MHz i carrier freq D 3 3 2 lt a D O 5 N 66 68 69 80 86 89 90 1 22 i Standard VHF UHF Channel List of U S A Channel Video Audio carrier Channel Video Audio carrier freq freq MHz i carrier freq 59 75 65 7 71 7 81 7 87 7 179 7 185 7 191 7 197 7 203 7 209 7 215 7 475 7 481 7 487 7 493 7 499 7 505 7 511 7 517 7 523 7 529 7 535 7 541 7 547 7 553 7 559 7 565 7 571 7 577 7 583 7 589 7 595 7 601 7 7 6 8 9 69 75 41 517 75 60 55375 66 565 75 68 57175 69 79 631 7 23 24
3. If the frequency corresponds to the audio carrier then the meter will display CHA next to the channel number When the meter is set to a frequency that is not a carrier of a stored channel the meter will display After the specific channel or carrier frequency is selected the meter will measure and provide the carrier power reading The numerical result will appear in the middle of the LCD screen See figure 3 SINGLE CHANNEL MEASUREMENT SUB MENU Pressing the F4 NEX soft key while in the Single Channel Measurement Mode Main Menu Screen will step to the Sub Menu figure 4 The soft key functions are as follows F1 ALL Changes the meter function to All Band Frequency Scanning Spectrum Analyzer Mode F2 AC Changes the meter function to AC Voltage Measurement Mode F3 C N Changes the meter function measure Carrier Noise Differential F4 ESC Exits back to the Single Channel Measurement mode Main Menu Frequency Current CHV 12 216 25 channel MHz measurement unit Battery status F1 F2 F3 F4 Fig 4 Single Channel Measurement Mode Sub Menu 10 Carrier Level Difference V A Measurement The ST5128 can measure the difference in power levels between video and audio carriers of a defined channel While in the Single Channel Measurement Mode Main Menu screen press the F2 V A soft key Note The V A function will not work unless the channel to be measu
4. channel MHz measurement unit Battery status Figure 3 Main menu display SINGLE CHANNEL MEASUREMENT MODE Pressing the F4 ESC soft key while in any screen or mode will return the meter to the Single Channel Measurement Mode and the Main Menu The Single Channel Measurement Mode allows the user to test the signals of an individual channel or at a selected frequency The channel number and corresponding frequency is displayed at the top of the LCD screen 1 Channel Selection Any Specific channel may be selected using either of these two methods a Enter the number of the channel to be measured using the numeric keypad Next press the CH key b Press the CH key Next use the keys to scroll to the desired channel 2 Frequency Selection The carrier frequency is displayed at the top of the LCD screen specific center frequency can be selected using either of these two methods a Using the numeric keypad type in the frequency to be measured in units of MHz Then press the MHz button to enter this number into the meter b Press the MHz button Then use the 1 buttons to change the carrier frequency in steps of 10 kHz When the meter is set to a frequency that is a carrier of an active stored channel then the channel number will also appear at the top of the LCD screen If the frequency corresponds to the video carrier then the meter will display CHV next to the channel number
5. ESC Exits to the sub menu screen of the single channel measurement mode 16 Operation 1 Using the numeric keypad enter the number of the channel to be measured and then press then CH key Or press the low mid or top soft key to select a starting channel from the standard channel list and then scroll to the desired channel using the f keys 2 Press the F4 ESC soft key to exit to the sub menu of the single channel measurement screen C N Measurement range and Accuracy Please refer to the fig 9 graph below 1 The x coordinate is the Power Level of the Signal The Y coordinates are the value of C N measurement The tolerance of the measurement can be determined by the intersect points X Y coordinate 2 The reliable area is located on the shaded area as shown on the graph 3 If the C N value shows the out sign this indicates that the C N value that was measured is smaller or greater than the meter s sensitivity 55 50 40 30 20 10 Reliable measurement Area Range 4dB err 60 70 75 80 85 90 Fig 9 C N Differential measurement range and accuracy 17 MULTI CHANNEL SPECTRUM ANALYZER MEASUREMENT MODE The Multi Channel Spectrum Analyzer measurement mode measures and displays the power levels of only the channels up to 50 stored in the user defined channel list Fig 10 To access this function while in the sub menu of the single channel measurement screen press the TEST key
6. HOLLAND ELECTRONICS LLC Model St 5128s Portable Field Strength Meter Spectrum Analyzer User s Manual Table of Contents A AA PAP PA 2 Specifications eT 3 Keypad Controls aalala o eb et wet 4 Other Physical Features sus kakala NANA 4 Powering me Meter a akiai sa ais saute DANG Ga a i cose tudin 6 Getting Started AA ind 6 Meter Se LING Ba na ees ee a LL 7 Man Meng Joseon 9 Single Channel Measurement Mode sse 9 Channel Selection RC 9 Frequency Selector anses sea visse sd ng 10 SUM 10 Carrier Level V A Differential Measurement ssuuusse 11 Single Channel Frequency Spectrum Mode eee nenna 12 All Frequency Band Spectrum Mode seen 14 A C Voltage Measurement ceci cene nee reiten dee 15 Carrier Noise Differential Measurement 0 ceceeeeeeee eee eeeeeeees 16 Multi Channel Spectrum Measurement Mode 0 00 0 ea nenna 18 VATA UY aa aan in aa a sen 20 Peor dite pe Pp MET 21 CATV Channel List oec decals hears cie a a a 21 VHE BHE Channel List d cea coe eon aod e OR ete i Bak en oec tnde 23 INTRODUCTION The ST5128 hand held field strength meter uses RF signal processing techniques and microprocessor technology to produce quick and accurate signal measurements The meter provides the user a choice of viewing individual channel power readings a single channel spectrum a multiple cha
7. dicates Channel or Frequency signal level in dBmV or dBuv plots graphics ContrastLevel Back Lighting Replaceable High Return Loss F Type Single channel or Full Spectrum Adjustable Volume 110 V 60 Hz 8 Hours Minimum Charge 4 3 110 x 10 248 x 2 6 65 2 Lbs 9 Kg Keypad Controls See Figure 1 to locate the following keypad controls 1 LCD Display Screen 2 PWR Power For powering up and powering down the meter 3 Numeric keys for value entry 4 CH Channel For entering a specific channel 5 MHz Megahertz Allows for entry to be input in MHz units 6 buttons Up and Down buttons These buttons allow for scrolling through settings such as the channel measured frequency sound volume and measurement reference point 7 F1 F2 F3 F4 Soft Keys The function of each soft key varies with the selected operation 8 ESC Escape Sends the meter back to the main menu 9 BACKLIGHT Turns the LCD back light on off 10 SET Setting Places the meter into the Setting Mode 11 TEST Sets the meter to Multi Channel Spectrum Measurement Mode Other Physical Features See Figure 1 to locate these features on the meter 12 F type input connection 13 Audio Speaker 14 DC power jack for power adapter ST5128 30001 15 Charging indicator LED Suma Ep 815128 S N 9906100D Figure 1 Model ST5128 external features POWERING THE METER The digital signal level me
8. fully thread the f type barrel splice adapter into the input port Tighten by hand until snug CAUTION If using a wrench do not exceed 5 inch lbs of torque Over tightening will seriously damage the input port creating an open connection at the input Note The LCD back light is automatically enabled when the meter is turned on Disabling the back light by pressing the key will extend the operating time of the battery before recharging is necessary METER SETTINGS SCREEN Press the SET key to access the settings screen fig 2 Options include the following 1 selecting between CATV or VHF UHF channels 2 selecting between dBuV or dBmV measurement units 3 adjusting the volume and display contrast levels and 4 creating or editing a user defined channel list 4 VOL 1 CON 37 Yo dB dBuV UNIT 1 CH 99 00 CTS CATV VOL UP DOW ESC Fig 2 meter settings screen 1 The ST5128 offers the choice to measure either USA CATV or VHF UHF channels To select between CATV or VHF UHF channels Press the SET key to enter the Settings screen Press the F2 UP soft key to move the cursor to CTS Use either of the f keys to toggle between CATV or VHF UHF Press the F4 ESC soft key to return to the single channel measurement mode screen and the main menu RON gt 2 To select between dbuV and dBmV measurement units Press the SET key if not already in the settings screen Press the F3 DOW soft
9. hipping costs will be the customer s responsibility Returns will not be accepted without an RMA number The warranty and remedy provided above are exclusive and in lieu of all other express warranties and unless stated herein any statements or representations made by any other person or firm are void The duration of any implied warranties of merchantability or fitness for a particular purpose on this product shall be limited to the duration of the warranty set fourth above Except as provided in this written warranty Holland Electronics LLC shall not be liable for any loss inconvenience damage including direct special incidental or consequential damages resulting from the use or inability to use this product whether resulting from breach of warranty or any legal theory Some states do not allow limitations on how long an implied warranty lasts and some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation and exclusion may not apply to you The warranty gives you specific legal rights and you may also have other rights which vary from state to state To arrange for warranty service Call Holland Electronics LLC 805 339 9060 Shipping address for authorized RMA returns Holland Electronics LLC 4219 Transport Street Ventura CA 93003 20 APPENDIX C hannel Video Standard CATV Channel List of U S A Audio carrier carrier freq freq MHz Channel Video
10. key twice to move the cursor to dB Use either of the f keys to toggle between dBmV or dBuV Press the F4 ESC soft key to return to the single channel measurement mode screen and the main menu B E 3 To adjust the volume level Press the SET key if not already in the settings screen Press the F1 VOL soft key to move the cursor to VOL Use the f keys to increase or decrease the volume level Press the F4 ESC soft key to return to the single channel BONG 4 To adjustthe contrast level of the LCD display RON Press the SET key if not already in the settings screen Press the F3 DOW soft key to move the cursor to CON Use the f keys to increase or decrease the contrast level Press the F4 ESC soft key to return to the single channel measurement mode screen and the main menu 5 To create or edit a custom user defined channel list optional The St5128s is equipped with 2 channel lists The first preset channel list contains the standard USA CATV and VHF UHF channel plans as shown in the appendix at the end of this manual The 2 channel list is the user defined channel list for storing up to 50 entries This channel list is used in the Multi Channel Spectrum Measurement Mode To create or edit a user defined channel list use the following steps 1 3 Press the SET key if not already in the settings screen 2 Press the F3 DOW soft key 3 times to move the cursor to the UNIT promp
11. m is defined by inputting the frequency to be measured in MHz using the numeric keypad and then pressing the MHz key CHV 12 216 25 MHz 80 70 SPA 60 6M 50 40 REF MAK SPA ESC Fig 6 Single Channel Spectrum Measurement Mode 12 The soft keys F1 F4 perform the following functions in the Spectrum Analyzer Measurement Mode F1 REF Allows the user to adjust the y axis reference power level coordinates in 104B increments F2 MAK Activates the marker so that the user can adjust the marker frequency F3 SPA Toggles the span of the spectrum analyzer between 6 or 12 MHz F4 ESC Exits out of the spectrum analyzer mode and returns to the main menu Operation 1 To adjust the y axis power level coordinates and reference level a Press the F1 REF soft key b Adjust the reference level in 10dB increments by using the M keys 2 To display the power level of specific channel a Press the F2 MAK soft key b Move the marker to the desired frequency by using the f keys c The meter will display the frequency and it s measured power level at the top of the screen 3 To change the frequency span of the spectrum analyzer press the F3 SPA soft key to toggle between 6 and 12MHz 13 ALL FREQUENCY FULL BAND SPECTRUM ANALYZER MODE The ST5128 has the capability to scan and display the field strength for all frequencies across the meter s bandwidth Pressing the F1 ALL soft key ac
12. n be recalled later in the Multi Channel Measurement Mode see next step Press the F3 P C soft key to recall the previously saved power level measurement The letter P will appear at the top center of the screen along with the previously saved power level reading Press the F3 P C soft key once again to continue scanning The letter C will appear at the top center of the screen Press the F4 ESC soft key to exit to the main menu of the single channel measurement screen To view or edit the user defined channel list refer to the meter settings section 19 Holland Electronics LLC Limited Warranty Holland Electronics LLC warrants that the product enclosed with this Limited Warranty statement will conform to the manufacturer s specifications and be free of defects in the workmanship and material for a period of one year 1 from the date of original purchase WARRANTY PROCEDURE If the product appears to be defective contact Holland Electronics LLC at 805 339 9060 We will analyze the problem and offer solutions to prevent removing the unit from service If no solution is found and the unit must be returned for repair you will be issued a Return Material Authorization RMA number Holland Electronics LLC will at its option repair or replace the defective unit under warranty without charge for parts or labor This repair will be subject to charges if signs of tampering or misuse are detected Incoming s
13. nnel spectrum or an all channel spectrum Automatic internal calibration corrects for measurement variations due to frequency response temperature changes and internal attenuator settings The combination of keypad tuning and menu driven displays allow for simple operation to get needed signal measurements The meter is programmed with both USA CATV and VHF UHF NTSC standard formats Users can also select specific frequencies for signal testing The back lit LCD allows for viewing data measurements even in dark places SPECIFICATIONS Input Impedance Input Frequency Frequency Stability Frequency Accuracy Min Tuning Increment I F Bandwidth Input Range Frequency Mode Tuning Increments Amplitude Measurement Accuracy CHANNELTYPE SPECTRUM ANALYZER MODE Single Channel Width Resolution Display Dynamic Range Full Spectrum Scan POWER LEVEL TESTING Range Accuracy Resolution A C VOLTAGE TESTING Range Accuracy Resolution DISPLAY TYPE Digital Graphic LCD LCD Controls FEATURES Input Connector Spectrum Viewing Audio AC Input Battery use Auto Power Shut Off Size in mm Weight 75 Ohms 46 860 MHz lt 30 ppm 15 KHz 10 KHz 230 50 KHz 40 to 60 dBmV 10 KHz 1 dB 24 C 1 5 dB 10 to 50 C NTSC 6 MHz 6 MHz 12 MHz 100 150 KHz 40 100 dB All Visual Carriers 40 to 60 dBmV lt 1 5bDmV 0 1 dBmV 20 to 100 vac alarms above 100v lt 1 0v 0 1v In
14. red has already been selected The resulting V A measurement display is shown in figure 5 Both the video and audio carrier power level measurements are also displayed Soft Key Functions F1 LOW Selects the lowest channel number in the predefined channel table F2 MID Selects the channel number midway between the 1 and last channels in the table F3 TOP Selects the highest channel number in the predefined channel table F4 ESC Exits out of the V A Measurement Mode Returns to the single channel measurement mode main menu Current aaa 216 25 MHz Frequency Video carrier VID 75 5 AUD 60 0 Audio carrier power level power level V A 1 5 5 dB Differential measurement LOW MID TOP ESC Fig 5 V A Carrier Level Differential measurement 11 SINGLE CHANNEL SPECTRUM ANALYZER MEASUREMENT MODE FOR REFERENCE ONLY The st5128s has the capability of measuring the frequency spectrum of a single channel Enter the frequency spectrum mode using the following steps 1 Begin in the main menu 2 Press the F3 SPT soft key The resulting screen is shown in figure 6 The st5128s provides the frequency spectrum reference power level and display bandwidth The marker frequency and the power level at the specified marker frequency are also shown When the meter first enters the frequency spectrum mode the marker frequency is the same as the center frequency The center frequency for the spectru
15. t The cursor will appear on the channel editing line Use the f keys to select a unit line number for the new entry in the user defined channel list To enter a channel from the standard channel list using the numeric keypad enter the channel number that you wish to record and then press the CH key to store the entry The corresponding frequency of the channel appears to the right of the CH prompt You may also enter any frequency using the numeric keypad and then press the MHz key to store the entry To make additional entries in the user defined channel list repeat steps 3 5 To edit or review the list use the f keys to scroll through the list You may delete any entry by scrolling to the unit line number and then pressing the TEST key Press the F4 ESC soft key to return to the single channel measurement mode and main menu MAIN MENU Pressing the F4 ESC soft key while in any screen or mode will return the meter to Single Channel Measurement Mode and the Main Menu Figure 3 In the main menu the soft keys F1 F2 F3 and F4 have the following functions F1 V A Toggles the display between video carrier CHV and audio carrier CHA power level measurement readings F2 V A Displays the differential between CHV and CHA F3 SPT Changes the meter operation to Frequency Spectrum Mode F4 NEX Steps from the main menu to the Sub Menu Frequency Current CHV 12 21 6 25
16. ter can either be powered by an external AC voltage source or by the internal rechargeable NiMH batteries A w S Using an external AC source Insert the DC output plug of the ST5128 30001 DC adapter charger into the DC jack of the ST5128 meter Plug the adapter charger into a 110 V AC source Powering the meter with internal batteries In order for the ST5128 meter to operate from the internal batteries a sufficient charge must exist on the batteries The recommended charging time for low charged batteries is 8 eight hours Charging the batteries occurs when the 8T5128 30001 charger is used to power the meter from an external AC source The batteries charge whether the meter is switched on or off The battery charge level is indicated by a bar graph at the bottom of the screen in the single channel measurement mode The meter produces an audible low battery alarm which repeats every 2 seconds indicating that the internal battery voltage is too low and the batteries need to be recharged When this occurs the meter will shut off unless the DC adapter charger is connected immediately The ST5128 shuts down automatically to conserve battery power if no buttons are pushed for 10 minutes GETTING STARTED 1 2 Push the PWR button to turn on meter The display will show the model and the serial numbers of the unit before automatically returning to the mode that was last used prior to turning off the meter Care
17. tivates the All Frequency Full Band Spectrum Mode The scan will take approximately 45 seconds and scan 100 channels The meter display for the All Frequency Band Spectrum Mode is shown in Figure 7 The ST5128 displays the video or audio carrier power levels of TV channels in the channel list being used CATV or VHF UHF The meter measures channel power levels between 40 and 60 dBmV For each channel that has no power the meter displays a short about 10 dB high vertical line of 40 dBmV The All Frequency Band Spectrum Mode can be activated so that the user can inspect the power of a specified channel in relation to all other channels in a band by pointing the marker at the bottom of the meter display to any selected channel video carrier within the frequency spectrum CHV 05 75 5 dBuV 80 70 60 50 40 REF MAK SPA ESC Fig 7 All Frequency Full Band Spectrum Measurement 14 Operation 1 To adjust the y axis power level coordinates and reference level a Press the F1 REF soft key b Adjust the reference level in 10dB increments by using the keys 2 To measure the power level of specific channel a Press the F2 MAK soft key b Move the marker to the desired frequency by using the f keys c A specific channel can also be selected by entering the channel number using the numeric keypad and then pressing the CH key d The meter will display the selected channel number and it s meas
18. ured power level at the top of the screen 3 To toggle between video and audio carrier power level measurement press the F3 V A soft key 4 To exit the spectrum analyzer mode press the F4 ESC soft key A C VOLTAGE MEASUREMENT MODE While in the sub menu of the single channel measurement mode press the F2 AC soft key to enter this function The meter will display the AC voltage measurement figure 8 The measurement range is from 20 100vac Press the F4 ESC soft key to exit back to the main menu of single channel measurement mode AC 60 5 V ESC Fig 8 A C Voltage Measurement Mode 1 CARRIER NOISE DIFFERENTIAL MEASUREMENT C N MODE While in the sub menu of the single channel measurement screen press the F3 C N soft key to enter this function The meter will measure and display the differential between the carrier s power level and the noise level fig 9 Note the result of the C N measurement is only for reference CHV 5 77 25 Mhz C 75 5 C N 40 5 dB LOW MID TOP ESC Fig 9 C N differential measurement In the C N Differential measurement mode the F1 F4 soft keys have the following functions F1 LOW Selects the first channel in the standard channel table list F2 MID Selects the channel in the middle of the standard channel table list F3 TOP Selects the last channel in the standard channel table list F4
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