Site Master Model S251C Antenna and Cable Analyzer User's Guide Hand-Held Tester for Transmission Lines and other RF Components Color Front Cover only P/N: 00986-00045
WARRANTY The Anritsu product(s) listed on the title page is (are) warranted against defects in materials and workmanship for one year from the date of shipment. Anritsu's obligation covers repairing or replacing products which prove to be defective during the warranty period. Buyers shall prepay transportation charges for equipment returned to Anritsu for warranty repairs. Obligation is limited to the original purchaser. Anritsu is not liable for consequential damages.
Table of Contents Chapter 1 - General Information Introduction . . . . . . . . Description . . . . . . . . . Standard Accessories . . . Options . . . . . . . . . . . Optional Accessories. . . . Performance Specifications Preventive Maintenance . . ESD Precautions . . . . . . Annual Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Saving a Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Recalling a Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Save and Recall a Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Saving a Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Recalling a Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 Set the Distance and Cable Type . . . . . . . . . . . . . . . .
Appendix A - Reference Data Coaxial Cable Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . A-1 Appendix B - Windowing Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 General Information Introduction This chapter provides a description, performance specifications, optional accessories, preventive maintenance, and calibration requirements for the Site Master model S251C. Throughout this manual, the term Site Master will refer to the S251C.
Chapter 1 General Information The following items are supplied with the basic hardware. · Soft Carrying Case · AC-DC Adapter · Automotive Cigarette Lighter 12 Volt DC Adapter, · CDROM disk containing the Software Tools program.
Chapter 1 General Information · Armored Test Port Extension Cable, 1.5 meter, N (m) to N (m), Part No. 15NN50-1.5C · Armored Test Port Extension Cable, 3.0 meter, N (m) to N (m), Part No. 15NN50-3.0C · Armored Test Port Extension Cable, 5.0 meter, N (m) to N (m), Part No. 15NN50-5.0C · Armored Test Port Extension Cable, 1.5 meter, N (m) to 7/16 DIN (f), Part No. 15NDF50-1.5C · Armored Test Port Extension Cable, 1.5 meter, N (m) to 7/16 DIN (m), Part No. 15ND50-1.
Chapter 1 General Information Table 1-1. Performance Specifications (1 of 2) Specifications are valid when the unit is calibrated at ambient temperature after a 5 minute warmup. Value Description Site Master: Frequency Range: S251C 625 to 2500 MHz Frequency Accuracy (RF Source Mode): £75 parts per million @ 25°C* Frequency Resolution: 10 kHz SWR: Range 1.00 to 65.00 Resolution 0.01 Return Loss: Range 0.00 to 54.00 dB Resolution 0.
Chapter 1 Table 1-2. General Information Performance Specifications (2 of 2) Cable Insertion Loss: Range Resolution Bias Tee input voltage: output current: General Internal Memory: Trace Memory Instrument config. RS-232 Electromagnetic Compatibility Power Supply: External DC Input Temperature: Storage Operation Weight: Dimensions: 0.00 to 54.00 dB 0.01 dB 12.5 to 15.
Chapter 1 General Information Preventive Maintenance Site Master preventive maintenance consists of cleaning the unit and inspecting and cleaning the RF connectors on the instrument and all accessories. Clean the Site Master with a soft, lint-free cloth dampened with water or water and a mild cleaning solution. CAUTION: To avoid damaging the display or case, do not use solvents or abrasive cleaners. Clean the RF connectors and center pins with a cotton swab dampened with denatured alcohol.
Chapter 1 General Information Annual Verification Anritsu recommends an annual calibration and performance verification of the Site Master and the OSL calibration components by local Anritsu service centers. Anritsu service centers are listed in Table 1-2 on the following page. The Site Master itself is self-calibrating, meaning that there are no field-adjustable components.
Chapter 1 General Information Table 1-2. Anritsu Service Centers UNITED STATES GERMANY SOUTH AFRICA ANRITSU COMPANY 685 Jarvis Drive Morgan Hill, CA 95037-2809 Telephone: (408) 776-8300 FAX: 408-776-1744 ANRITSU GmbH Grafenberger Allee 54-56 D-40237 Dusseldorf Germany Telephone: 0211-968550 FAX: 0211-9685555 ETESCSA 12 Surrey Square Office Park 330 Surrey Avenue Ferndale, Randburt, 2194 South Africa Telephone: 011-27-11-787-7200 Fax: 011-27-11-787-0446 ANRITSU COMPANY 10 NewMaple Ave.
Chapter 2 Functions and Operations Introduction This chapter provides a brief overview of the Site Master functions and operations, providing the user with a starting point for making basic measurements. For more detailed information, refer to Chapter 4, Measurements and Chapter 5, Software Tools. The Site Master is designed specifically for field environments and applications requiring mobility.
Chapter 2 Functions and Operations Front Panel Overview The Site Master menu-driven user interface is easy to use and requires little training. Hard keys on the front panel are used to initiate function-specific menus. There are four function hard keys located below the display, Mode, Frequency/Distance, Amplitude and Sweep. There are seventeen keypad hard keys located to the right of the display. Twelve of the keypad hard keys are dual purpose, depending on the current mode of operation.
Chapter 2 Functions and Operations Function Hard Keys MODE Opens the mode selection box (below). Use the Up/Down arrow key to select a mode. Press the ENTER key to implement. MEASUREMENT MODE FREQ - SWR RETURN LOSS CABLE LOSS - ONE PORT INSERTION LOSS (+6 dBm) INSERTION GAIN (–30 dBm) DTF - SWR RETURN LOSS POWER MONITOR RF SOURCE Figure 2-2. Mode Selection Box FREQ/DIST Displays the Frequency or Distance to Fault softkey menus depending on the measurement mode.
Chapter 2 Functions and Operations Keypad Hard Keys This section contains an alphabetical listing of the Site Master front panel keypad controls along with a brief description of each. Where necessary, more detailed descriptions of the major function keys follow. The following keypad hard key functions are printed in black on the keypad keys. 0-9 These keys are used to enter numerical data as required to setup or perform measurements.
Chapter 2 Functions and Operations The following keypad hard key functions are printed in blue on the keypad keys. Turns the liquid crystal display (LCD) back-lighting ON or OFF. (Leaving back lighting off conserves battery power.) LCD Contrast adjust. Use the Up/Down arrow key and ENTER to adjust the display contrast. AUTO SCALE Automatically scales the display for optimum resolution. LIMIT Displays the limit menu of the current operating mode.
Chapter 2 Functions and Operations Soft Keys Each function key opens a set of soft key selections. Each of the soft keys has a corresponding soft key label area on the display. The label identifies the function of the soft key for the current Mode selection. Figures 2-3 and 2-4 show the soft key labels for each Mode selection. Where necessary, more detailed descriptions of the function keys follow.
Chapter 2 Functions and Operations MODE=DTF: FREQ/DIST AMPLITUDE SWEEP SOFTKEYS: D1 TOP RESOLUTION D2 BOTTOM SINGLE SWEEP TRACE MATH DTF AID TRACE OVERLAY 130 259 517 MORE ON/OFF LOSS SELECT TRACE PROP VEL CABLE WINDOW TOP OF LIST PAGE UP BACK PAGE DOWN BACK BOTTOM OF LIST DELETE TRACE DELETE ALL TRACE Figure 2-4.
Chapter 2 Functions and Operations FREQ/DIST Displays the frequency and distance menu depending on the measurement mode. Frequency Menu Provides for setting sweep frequency end points when FREQ mode is selected. Selected frequency values may be changed using the keypad or Up/Down arrow key. q F1 — Opens the F1 parameter for data entry. This is the start value for the frequency sweep. Press ENTER when data entry is complete. q F2 — Opens the F2 parameter for data entry.
Chapter 2 Functions and Operations AMPLITUDE Displays the amplitude or scale menu depending on the measurement mode. Amplitude Menu Provides for changing the display scale. Selected values may be changed using the Up/Down arrow key or keypad. Choosing AMPLITUDE in FREQ or DTF measurement modes causes the soft keys, below, to be displayed and the corresponding values to be shown in the message area. q TOP — Opens the top parameter for data entry and provides for setting the top scale value.
Chapter 2 Functions and Operations Power Monitor Menu (Option 5) Selecting POWER MONITOR from the Mode menu causes the soft keys, described below, to be displayed and the corresponding values shown in the message area. MODE=POWER MONITOR: SOFTKEYS: UNITS REL OFFSET ZERO Figure 2-5. Power Monitor Mode Soft Key Labels q UNITS — Toggles between dBm and Watts. q REL — Turns relative mode OFF, if currently ON.
Chapter 2 Functions and Operations RF Source Menu RF Source mode provides an RF Out source that can be used, for example, in the alignment of dish antennas. Selecting RF SOURCE from the Mode menu causes the soft keys, described below, to be displayed: MODE=RF SOURCE: SOFTKEYS: FREQ POWER Figure . RF Source Softkeys q FREQ — Allows setting of the RF source frequency. Use the keypad number keys to enter a frequency, or use the Up/down arrow key to adjust the frequency in 10 kHz steps.
Chapter 2 Functions and Operations LIMIT Pressing LIMIT on the data keypad activates a menu of limit related functions. Use the corresponding softkey to select the desired limit function. Then use the Up/Down arrow key to change its value, which is displayed in the message area at the bottom of the display. Choosing LIMIT causes the soft keys below to be displayed. q SINGLE LIMIT — Sets a single limit value in dBm.
Chapter 2 Functions and Operations q EDIT — Opens the selected marker parameter for data entry. Press ENTER when data entry is complete or ESCAPE to restore the previous value. q DELTA (Mx-M1) — Displays delta amplitude value as well as delta frequency or distance for the selected marker with respect to the M1 marker. q MARKER TO PEAK — Places the selected marker at the frequency or distance with the maximum amplitude value.
Chapter 2 Functions and Operations SEGMENT 3 SEGMENT 4 SEGMENT 5 BACK q LIMIT BEEP SYS — Turns the audible limit beep indicator on or off. Displays the System menu softkey selections. q OPTIONS q UNITS — Displays a second level of functions: — Select the unit of measurement (English or metric). q PRINTER — Displays a menu of supported printers. Use the Up/Down arrow key and ENTER key to make the selection. q FIXED CW — Toggles the fixed CW function ON or OFF.
Chapter 2 Functions and Operations Symbols Table 2-1 provides a listing of the symbols used as condition indicators on the LCD display. Table 2-1. LCD Icon Symbols Icon HOLD ò dx T Symbol Site Master is in Hold for power conservation. To resume sweeping, press the RUN/HOLD key. After 10 minutes without a key press, the Site Master will automatically activate the power conservation mode. Integrator Failure. Intermittent integrator failure may be caused by interference from another antenna.
Chapter 2 Functions and Operations Error Codes Self Test Errors A listing of Self Test Error messages is given in Table 2-2. Table 2-2. Self Test Error Messages Error Message Description BATTERY LOW Battery voltage is less than 10 volts. Charge battery. If condition persists, call your Anritsu Service Center. EXTERNAL POWER LOW External supply voltage is less than 10 volts. Call your Anritsu Service Center PLL FAILED Phase-locked loops failed to lock. Charge battery.
Chapter 2 Functions and Operations Range Errors A listing of Range Error messages is given in Table 2-3. Table 2-3. Range Error Messages (1 of 2) Description Error Message RANGE ERROR:F1 > F2 The start (F1) frequency is greater than the stop (F2) frequency. RANGE ERROR:D1 > D2 The start (D1) distance is greater than the stop (D2) distance. RANGE ERROR:D2 > DMax=xx.x ft (m) The stop distance (D2) exceeds the maximum unaliased range.
Chapter 2 Functions and Operations Battery Information Charging a New Battery The NiMH battery supplied with the Site Master has already completed three charge and discharge cycles at the factory and full battery performance should be realized after your first charge. NOTE: The battery will not charge if the battery temperature is above 45° C or below 0° C. Charging the Battery in the Site Master The battery can be charged while installed in the Site Master. Step 1. Turn the Site Master off. Step 2.
Chapter 2 Functions and Operations The NiMH battery will last longer and perform better if allowed to completely discharge before recharging. For maximum battery life, it is recommended that the NiMH battery be completely discharged and recharged once every three months. Battery Charge Indicator When the AC-DC adapter is unplugged from the Site Master, the battery indicator symbol will be continuously displayed at the top left corner of the Site Master display (Figure ). BATTERY INDICATOR Figure .
Chapter 2 Functions and Operations The battery can be charged and discharged 300 to 500 times, but it will eventually wear out. The battery may need to be replaced when the operating time between charging is noticeably shorter than normal. Important Battery Information · With a new NiMH battery, full performance is achieved after three to five complete charge and discharge cycles. The NiMH battery supplied with the Site Master has already completed three charge and discharge cycles at the factory.
Chapter 3 Getting Started Introduction This chapter provides a brief overview of the Anritsu Site Master. The intent of this chapter is to provide the user with a starting point for making basic measurements. Power On Procedure The Anritsu Site Master is capable of up to 2.5 hours of continuous operation from a fully charged, field-replaceable battery. Built-in energy conservation features allow battery life to be extended over an eight-hour workday. The Site Master can also be operated from a 12.
Chapter 3 Getting Started Select the Frequency or Distance Regardless of the calibration method used, the frequency range for the desired measurements must be set before calibrating the Site Master. The following procedure selects the frequency range for the calibration. Step 1. Press the FREQ/DIST key. Step 2. Press the F1 soft key. Step 3. Enter the desired frequency using the key pad or the Up/Down arrow key. Step 4. Press ENTER to set F1 to the desired frequency. Step 5. Press the F2 soft key. Step 6.
Chapter 3 Getting Started Calibration Procedure - Single Port Check that the “CAL OFF” message is displayed in the upper left corner of the display. This indicates that the Site Master has not been calibrated. The following procedure details how to perform the calibration. OPEN SHORT CALIBRATION LOAD TEST PORT CABLE (OPTIONAL) RFOUT/REFLECTION TEST PORT Site Master S332C 1 2 START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 5 LIMIT 7 SAVE DISPLAY 9 ON OFF MODE Figure 3-2.
Chapter 3 Getting Started Calibration Procedure - Dual Port Check that the “CAL OFF” message is displayed in the upper left corner of the display. This indicates that the Site Master has not been calibrated. The following procedure details how to perform the calibration. Two port calibration requires two Load components. Step 1. Select the appropriate frequency range, as described in the procedure on page 3-2. Step 2. Press the START CAL key.
Chapter 3 Getting Started Setting the Scale Auto Scale The Site Master can automatically set the scales to the minimum and maximum values of the measurement on the y-axis of the display. This function is particularly useful for measurements in SWR mode. To automatically set the scales: Step 1. Press the AUTO SCALE key. The Site Master will automatically set the top and bottom scales to the minimum and maximum values of the measurement on the y-axis of the display.
Chapter 3 Getting Started Step 1. Press the SAVE DISPLAY key to activate the alphanumeric menu for trace storage. Step 2. Use the soft keys to enter a label for the saved trace. For example, to save a display with the name “TX1 RETURN LOSS” press the soft key group that contains the letter “T” then press the “T” soft key. Press the soft key group that contains the letter “X” then press the “X” soft key. Press the number “1” key on the numeric keypad.
Chapter 3 Getting Started Set the Distance and Cable Type In Distance-To-Fault (DTF) mode, the length of the transmission line (distance) and cable type are selected. The cable type determines the velocity propagation and cable attenuation factor. The following procedure can be used to set the distance and select the appropriate cable type. NOTE: Selecting the correct cable is very important for accurate measurements and for identifying faults in the transmission line.
Chapter 3 Getting Started Printing Printing is accomplished by selecting an available printer and pressing the print key as described below. Refer to the particular printer operating manual for specific printer settings. Printing a Screen Step 1. Connect the printer as shown in Figure 3-4.
Chapter 3 Getting Started Step 4. Press the PRINTER soft key and select from the displayed menu of supported printers. Step 5. Press the PRINT key. (Figure 3-6). PRINTER Site Master S251C ESCAPE CLEAR 2 1 PRINTER START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 CHANGE DATE 4 6 5 LIMIT MARKER SAVE DISPLAY RECALL DISPLAY 9 ON OFF MODE Figure 3-6-. FREQ/DIST ENTER 8 7 0 PRINT RUN HOLD +/- PRINT .
Chapter 3 Getting Started Using the Soft Carrying Case The soft carrying case has been designed such that the strap can be unsnapped to allow the case to be easily oriented horizontally; thus allowing the Anritsu controls to be more easily accessed (Figure 3-7). Figure 3--7.
Chapter 4 Cable & Antenna Analysis Introduction This chapter provides a description of cable and antenna measurements in one port and two port modes. Measurements include line sweeping fundamentals and line sweeping measurement procedures, available when the Site Master is in frequency or DTF mode. One Port Measurements Line Sweep Fundamentals In wireless communication, the transmit and receive antennas are connected to the radio through a transmission line.
Chapter 4 Measurements The performance of a transmission feed line system may be affected by excessive signal reflection and cable loss. Signal reflection occurs when the RF signal reflects back due to an impedance mismatch or change in impedance caused by excessive kinking or bending of the transmission line. Cable loss is caused by attenuation of the signal as it passes through the transmission line and connectors.
Chapter 4 Measurements Typical Line Sweep Test Procedures This section provides typical line sweep measurements used to analyze the performance of a transmission feed line system. System Return Loss Measurement System return loss measurement verifies the performance of the transmission feed line system with the antenna connected at the end of the transmission line.
Chapter 4 Measurements Figure 4-2 is an example of a typical system return loss trace: Figure 4-2. Typical System Return Loss Trace NOTE: The system sweep trace should appear at an approximate return loss of 15 dB (±3 dB) on the display. In general, a 15 dB return loss is measured in the passband of the antenna system. If the TMA is in the transmission feed line system, switch off the TMA bypass switch, if equipped.
Chapter 4 Measurements Insertion Loss Measurement The transmission feed line insertion loss test verifies the signal attenuation level of the cable system in reference to the specification. This test can be conducted with the Site Master in either FREQ–CABLE LOSS or FREQ–RETURN LOSS mode. In Cable Loss mode, the Site Master automatically considers the signal traveling in both directions when calculating the insertion loss, making the measurement easier for the user in the field.
Chapter 4 Measurements Step 14. Verify the measured insertion loss against the calculated insertion loss: Type Attenuation (dB/ft) 0.0325 First Jumper LDF4-50A LDF5-50A 0.0186 Main Feeder Top Jumper LDF4-50A 0.0325 ´ Length (ft) = Loss (dB) 20 0.65 150 2.79 10 0.325 The number of connector pairs (3) times the loss per pair (in dB) equals the connector loss: 3 ´ 0.14 = 0.42.
Chapter 4 Measurements Procedure - Return Loss Mode Step 1. Press the MODE key. Step 2. Select FREQ-RETURN LOSS using the Up/Down arrow key and press ENTER. Step 3. Set the start and stop frequencies, F1 and F2, as described on page 3-2. Step 4. Connect the Test Port Extension cable to the RF Out port and calibrate the Site Master as described on page 3-2. Step 5. Save the calibration set up (page 3-5). Step 6. Connect the Device Under Test to the Site Master phase stable Test Port Extension cable.
Chapter 4 Measurements Distance-To-Fault (DTF) Transmission Line Test The Distance-To-Fault transmission line test verifies the performance of the transmission line assembly and its components and identifies the fault locations in the transmission line system. This test determines the return loss value of each connector pair, cable component and cable to identify the problem location. This test can be performed in the DTF–RETURN LOSS or DTF–SWR mode.
Chapter 4 Measurements Figure 4-5 shows an example of a typical DTF return loss trace. Figure 4-5. Typical DTF Return Loss Trace In the above example: q Marker M1 marks the first connector, the end of the Site Master phase stable Test Port Extension cable. (M1 = 38.42 dB, 3.2 ft.) q Marker M2 marks the first jumper cable. (M2 = 32.04 dB, 13.1 ft.) q Marker M3 marks the end of the main feeder cable. (M3 = 31.70 dB, 149.0 ft.) q Marker M4 is the load at the end of the entire transmission line.
Chapter 4 Measurements Antenna Subsystem Return Loss Test Antenna Subsystem return loss measurement verifies the performance of the transmit and receive antennas. This measurement can be used to analyze the performance of the antenna before installation. The antenna can be tested for the entire frequency band, or tested to a specific frequency range. Transmit and receive frequency measurements are conducted separately. The following steps explain how to measure the antenna loss in return loss mode.
Chapter 4 Measurements The following trace is an example of an antenna return loss trace. Figure 4-6. Antenna Return Loss Trace Calculate the threshold value and compare the recorded Lowest Return Loss to the calculated threshold value. Maximum Return Loss = -20 log (VSWR - 1) (VSWR + 1) NOTE: VSWR is the antenna manufacturer’s specified VSWR. If the measured return loss is less than the calculated threshold value, the test fails and the antenna must be replaced.
Chapter 4 Measurements Two Port Measurements Introduction A Tower Mounted Amplifier (TMA) can be used to amplify the received signal. There are different types of TMA depending on the system requirements. Three commonly used types are: q TMA-D¾A duplex tower mounted amplifier that combines transmit and receive ports from the radio system and connects to a single antenna. This configuration is specific to systems that use a single antenna configuration.
Chapter 4 Measurements TMA Measurements Required Equipment q Site Master Model S251C q Option 10A, Bias Tee q External Power Supply 40-115 q Test Port Extension Cable, Anritsu 15NNF50-1.5C q N (m) to 7 (m) Adapters 16 Device Under Test q TMA-S Procedure Step 1. Connect the External Power Supply (40-115) to the Site Master. Step 2. Turn on the Site Master and press the MODE key. Step 3. Select INSERTION GAIN (–30 dBm) using the Up/Down arrow key and press ENTER. Step 4.
Chapter 4 Measurements Step 8. Press the SYS key, then OPTIONS, then BIAS TEE to turn on the bias tee voltage. The gain is the level change before and after the bias tee voltage is turned on. Step 9. Press the AUTO SCALE key, or press the AMPLITUDE key to adjust the top and bottom scale, to display the gain level. Step 10. Press the MARKER key and set marker set M1 to 834 MHz and marker M2 to 883 MHz.
Chapter 4 Measurements Device Under Test q TMA-DD Procedure Step 1. Connect the External Power Supply (40-115) to the Site Master. Step 2. Turn on the Site Master and press the MODE key. Step 3. Select INSERTION GAIN (–30 dBm) using the Up/Down arrow key and press ENTER. Step 4. Press the FREQ/DIST key to set the frequency limits. For a TMA-DD amplifier, set F1 to 1800 MHz and F2 to 1990 MHz. Step 5. Perform a two-port calibration of the Site Master (page 3-4). Step 6.
Chapter 4 Measurements Marker M1 indicates the receive band of the tower mounted amplifier. The level above the 0 dB reference level is the gain of the TMA. Marker M2 indicates the transmit band of the amplifier where there is no gain. Gain/Insertion Loss TMA-DD PCS M1: 12.17 dB @ 1882.36 MHz 10 0 -10 dB -20 -30 -40 -50 -60 M1 -70 1825 1850 1875 1900 1925 1950 1975 Frequency (18250.0 - 2025.0 MHz) Figure 4-12.
Chapter 4 Measurements Device Under Test q TMA-D Procedure Step 1. Connect the External Power Supply (40-115) to the Site Master. Step 2. Turn on the Site Master and press the MODE key. Step 3. Select INSERTION GAIN (–30 dBm) using the Up/Down arrow key and press ENTER. Step 4. Press the FREQ/DIST key to set the frequency limits. For a TMA-D amplifier, set F1 to 1800 MHz and F2 to 1990 MHz. Step 5. Perform a two-port calibration of the Site Master (page 3-4). Step 6.
Chapter 4 Measurements Marker M1 indicates the receive band of the tower mounted amplifier. The level above the 0 dB reference level is the gain of the TMA. Marker M2 indicates the transmit band of the amplifier where there is no gain. Figure 4-14.
Chapter 4 Measurements Antenna to Antenna Isolation Introduction Measuring antenna-to-antenna isolation between adjacent systems is very important when deploying multiple systems on the same tower. It helps to determine the potential threat of interfering signals and maximizes the capacity of the base station. An example of adjacent PCS systems is shown in Figure 4-15. Antenna 1 transmits a signal in a specific direction, but some of the signal is received by Antenna 2.
Chapter 4 Measurements Antenna-to-Antenna Isolation Measurement Antenna-to-Antenna isolation measurement is accomplished in Insertion Loss Mode. Insertion Loss Mode (+ 6 dBm) is used to drive the signal level large enough to be detected by the second antenna system. The Insertion Gain Mode (–30 dBm level) does not output enough power to provide an accurate measurement of Antenna-to-Antenna isolation . Required Equipment q Site Master Model S251C q Test Port Extension Cable, Anritsu 15NNF50-1.
Chapter 4 Measurements Step 5. Disconnect the Tx (Transmit) coax from System 1 and connect it to the RF Out port of the Site Master. Step 6. Disconnect the Rx (Receive) coax from System 2 and connect it to the RF In port of the Site Master. Step 7. Adjust the scale, either manually or by using the AUTO SCALE key, to display the isolation level in the center of the display. Step 8. Press the MARKER key and set markers M1 and M2 to identify the receive band of the amplifier. Step 9.
Chapter 5 Site Master Software Tools Introduction This chapter provides a description of the Site Master Software Tools provided with the Site Master. Site Master Software Tools (SMST) is a Windows 95/98/NT4/2000/ME program for cable and antenna trace analysis. The program help function provides on screen instructions on display modification, trace overlay, and multiple plot printing.
Chapter 5 Software Tools Program Installation To install the Site Master Software Tools program: Step 1. Insert the Anritsu Site Master Software Tools disk in the CDROM drive. Step 2. From the Windows Start menu, select Run . Step 3. Type: X:\Setup.exe where X is the drive letter of your CDROM drive. Step 4. When prompted, press the Enter key to accept the default directory C:\Program Files\Site Master Software Tools and the installation will begin. Step 5.
Chapter 5 Software Tools Program Interface Cable Installation Communication between the Site Master and the PC is accomplished over a null modem serial cable provided with the Site Master (Anritsu part number 800-441). Step 1. Install the null modem serial interface cable to the Serial Interface connector on the Site Master Test Connector Panel. Step 2. Connect the other end of the serial interface cable to the appropriate COM port connector on the PC. Step 3. Turn on both the Site Master and the PC.
Chapter 5 Software Tools Program Plot Capture To open the plot capture menus, select the capture icon on the button bar, or select the Capture drop down menu from the menu bar. Select Capture to Screen to download traces to the PC. Highlight a folder, or highlight individual traces within a folder, to be downloaded to the PC. The traces will appear on the PC display as they are downloaded. Plot Properties After downloading, certain plot properties and information can be modified.
Chapter 5 Software Tools Program Markers Markers M1 through M6 can be activated from the Plot Properties menu. The six active markers can be displayed on the plot to help identify faults from the line sweep data. Misc. The Miscellaneous tab allows adjustment of the Plot/Limit Line Width and the setting of the Plot Footer. Plot/Limit Line Width can be used when preparing reports for the carrier, service providers, and network operators where the trace data must be visible and legible for documentation.
Chapter 5 Software Tools Program Step 3. Exit the Site Master Software Tools program and open the target application (Microsoft Word, etc.). Step 4. Select Edit and then Paste. The file will be inserted as a low-resolution graphic file or a bitmap. Saving a Plot to a Spreadsheet Plots can be saved as a text file (.txt) which can then be imported into a spreadsheet program. To save a plot as a text file: Step 1. Select the trace to be copied with the mouse cursor. Step 2.
Chapter 5 Software Tools Program Uploading a Cable List After custom cable list has be created in Site Master Software Tools it can upload it to the Site Master. The serial communication null modem cable must be connected from the Site Master to the PC. In the Cable Editor, select Tools and Upload Cable List. The software will confirm the upload with a message " Upload Complete" when the operation is finished.
Appendix A Reference Data Coaxial Cable Technical Data Table A-1 provides a standard listing of common coaxial cables along with their Relative Propagation Velocity and Nominal Attenuation values in dB/m @1000, 2000, and 2500 MHz. Table A-1. Coaxial Cable Technical Data (1 of 3) Manufacturer Cable Type Relative Propagation Velocity (Vf) Andrew FSJ1-50A 0.84 Nominal Attenuation dB/m @ 1000 MHz 0.197 Nominal Attenuation dB/m @ 2000 MHz 0.285 Nominal Attenuation dB/m @ 2500 MHz 0.
Appendix A Reference Data Table A-1. Coaxial Cable Technical Data (2 of 3) Manufacturer Cable Type Relative Propagation Velocity (Vf) Belden RG214 0.659 Nominal Attenuation dB/m @ 1000 MHz 0.292 Belden RG223 0.659 0.535 N/A N/A Cablewave HCC12-50J 0.915 0.087 0.126 0.137 Cablewave HCC78-50J 0.915 0.041 0.061 0.066 Cablewave HCC158-50J 0.95 0.022 0.031 0.033 Cablewave HCC300-50J 0.96 0.015 N/A N/A Cablewave HCC312-50J 0.96 0.
Appendix A Reference Data Table A-1. Coaxial Cable Technical Data (3 of 3) Manufacturer Cable Type Relative Propagation Velocity (Vf) NK Cables RF 2 ¼” -50 0.88 Nominal Attenuation dB/m @ 1000 MHz 0.021 Nominal Attenuation dB/m @ 2000 MHz 0.034 Nominal Attenuation dB/m @ 2500 MHz N/A NK Cables RF 2 ¼” -50 GHF 0.88 0.021 0.034 N/A NK Cables RF 2 ¼” -50 BHF 0.88 0.021 0.034 N/A NK Cables RFF 3/8” -50 0.81 0.147 0.218 0.25 NK Cables RFF 3/8” -50 GHF 0.81 0.147 0.218 0.
Appendix B Windowing Introduction The Distance sub-menu (page 2-8) provides for setting the cable loss and relative propagation velocity of the coaxial cable. The WINDOW key opens a menu of FFT windowing types for the DTF calculation. The theoretical requirement for inverse FFT is for the data to extend from zero frequency to infinity. Side lobes appear around a discontinuity due to the fact that the spectrum is cut off at a finite frequency.
Appendix B Windowing D is ta n c e T o F a u lt -5 -1 0 -1 5 -2 0 -2 5 -3 0 R e tu rn L o s s (d B ) -3 5 -4 0 -4 5 -5 0 1 0 5 Figure B-2. 1 5 2 0 2 5 3 0 F e e t 3 5 4 0 4 5 5 0 5 5 6 0 4 0 4 5 5 0 5 5 6 0 Nominal Side Lobe Windowing Example D is ta n c e T o F a u lt -5 -1 0 -1 5 -2 0 -2 5 -3 0 R e tu rn L o s s (d B ) -3 5 -4 0 -4 5 -5 0 5 Figure B-3.
Appendix B Windowing D is ta n c e T o F a u lt -5 -1 0 -1 5 -2 0 -2 5 -3 0 R e tu rn L o s s (d B ) -3 5 -4 0 -4 5 -5 0 5 Figure B-4.
