Site Master Model S251B Antenna and Cable Analyzer User's Guide Hand-Held Tester for Transmission Lines and other RF Components
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 . . Calibration . . . . . . . . . Annual Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Frequency Range . . Performing a Calibration . . . . . Setting the Amplitude Scale . . . . Saving the Setup . . . . . . . . . . Recalling a Setup . . . . . . . . . . Saving a Display to Memory . . . . Recalling a Display From Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5 - Software Tools Program 5-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Communication Port Setting. . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Changing COM Port Settings–Windows 95/98/NT . . . . . . . . . . . . . . . 5-1 Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Plot Capture. . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 General Information Introduction This chapter provides a description, performance specifications, optional accessories, preventive maintenance, and calibration requirements for the Site Master model S251B. Throughout this manual, the term Site Master will refer to the S251B.
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. 15NN50-1.5A · Armored Test Port Extension Cable, 3.0 meter, N (m) to N (m), Part No. 15NN50-3.0A · Armored Test Port Extension Cable, 5.0 meter, N (m) to N (m), Part No. 15NN50-5.0A · Armored Test Port Extension Cable, 1.5 meter, N (m) to 7/16 DIN (f), Part No. 15NDF50-1.5A · 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: S251B 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) 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: 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 Calibration The Site Master is a field portable unit operating in the rigors of the test environment. An Open-Short-Load (OSL) or Open-Short-Load-Through (OSLT) calibration should be performed prior to making a measurement in the field.
Chapter 1 General Information Table 1-2. Anritsu Service Centers UNITED STATES CHINA KOREA ANRITSU COMPANY ANRITSU BEIJING SERVICE CENTER ANRITSU CORPORATION LTD. 685 Jarvis Drive Beijing Fortune Building #901 Daeo Bldg.
Chapter 2 Getting Started Introduction The Nickel Metal Hydride (NiMH) Battery supplied with the Site Master is shipped in a discharged state. Before using the Site Master, the internal battery must first be charged for three hours, either in the Site Master or in the optional battery charger (Anritsu part number: 2000-1029). Charging a New Battery New batteries normally require three to five charge and discharge cycles before attaining maximum performance.
Chapter 2 Getting Started A yellow light may occur because the battery became too warm during the charge cycle. The charger will allow the battery to cool off before continuing the charge. A yellow light may also indicate that the charger is alternating charge to each of the two batteries. A blinking red light indicates less than 13 VDC is being supplied to the charger stand. Check that the correct AC charger adapter is connected to the charger stand.
Chapter 2 Getting Started The battery status can also be checked by pressing the SYS key and the STATUS soft key. The Status table will display the remaining battery charge as a percent, as shown below. STATUS OSL CALIBRATION FREQUENCY = 2.0 – 1000 MHz CAL TEMPERATURE (24–54° C) CURRENT TEMPERATURE = 38° C BATTERY CHARGE = 75% PRESS ESCAPE TO CONTINUE Figure 2-2. Example Status Table Display Once all the power has drained from the battery, the Site Master display will fade.
Chapter 2 Getting Started · With a new NiMH battery, full performance is achieved after three to five complete charge and discharge cycles. · Use only Anritsu approved battery packs. · Recharge the battery only in the Site Master or in an Anritsu approved charger. · When the Site Master or the charger is not in use, disconnect it from the power source. · Do not charge batteries for longer than 24 hours; overcharging may shorten battery life.
Chapter 3 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 3 Functions and Operations Test Connector Panel The connectors and indicators located on the test panel are listed and described below. 12.5-15VDC (1100 mA) 12.5 to 15 Vdc @ 1100 mA input to power the unit or for battery charging. WARNING When using the AC-DC Adapter, always use a three-wire power cable connected to a three-wire power line outlet. If power is supplied without grounding the equipment in this manner, there is a risk of receiving a severe or fatal electric shock.
Chapter 3 Functions and Operations Keypad Controls This section contains an alphabetical listing of the Site Master front panel keypad controls along with a brief description of each. More detailed descriptions of the major function keys follow. 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.
Chapter 3 Functions and Operations ON OFF Turns the Site Master on or off. When turned on, the system state at the last turn-off is restored. If the ESCAPE/CLEAR key is held down, the factory preset state is restored. PRINT Prints the current display to the selected printer via the RS232 serial port. RECALL DISPLAY Recalls a previously saved trace from memory. When the key is pressed, a Recall Trace selection box appears on the display.
Chapter 3 Functions and Operations NOTE: The combined measurements of an open, a short, and a known-impedance load normalizes the measurement system to account for uncertainties introduced by measurement-system components (e.g., cables, connectors, etc.). q CONNECT LOADS TO RF Out PORT and RF In PORT, Press ENTER. The Site Master then measures the isolation between the RF Out port and the RF In port, or between the test port cables attached to the RF Out and RF In ports.
Chapter 3 Functions and Operations Soft Keys Each keypad 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. NOTE: The AMPLITUDE and LIMIT keys are functionally identical. Figures 3-3 through 3-8 show the soft key labels for each Mode selection.
Chapter 3 Functions and Operations MODE=POWER MONITOR: SOFTKEYS: UNITS REL OFFSET ZERO Figure 3-4.
Chapter 3 Functions and Operations FREQ/DIST AMPLITUDE SWEEP D1 TOP RESOLUTION D2 BOTTOM SINGLE SWEEP DTF AID LIMIT TRACE MATH TRACE OVERLAY ON/OFF EDIT SEGMENT MORE LIMIT BEEP PROP VEL SELECT TRACE SCROLL SEGMENT FULL SPAN LOSS ON/OFF SELECT SEGMENT BACK CABLE WINDOW TOP OF LIST PAGE UP PAGE DOWN BOTTOM OF LIST DELETE TRACE BACK Figure 3-5.
Chapter 3 Functions and Operations MARKER 8 M1 M2 ON/OFF M3 EDIT ON/OFF M4 EDIT MARKER TO PEAK DELTA M2 - M1 MARKER TO VALLEY MARKER TO PEAK BACK ON/OFF ON/OFF EDIT EDIT DELTA M4 - M1 MARKER TO VALLEY DELTA M3 - M1 MARKER TO PEAK BACK MARKER TO PEAK MARKER TO VALLEY MARKER TO VALLEY BACK ALL OFF BACK Figure 3-6.
Chapter 3 Functions and Operations SAVE DISPLAY RECALL DISPLAY 9 Figure 3-7. 0 ABC DEF TOP OF LIST GHI JKL PAGE UP MNO PQR PAGE DOWN STU VWX BOTTOM OF LIST YZ - . / SPACE DELETE TRACE BACK SPACE DELETE ALL TRACES Save Display and Recall Display Soft Key Menus SYS OPTIONS CLOCK UNITS PRINTER FIXED CW SELF TEST HOUR STATUS MINUTE CHANGE DATE FORMAT MONTH BIAS TEE DAY YEAR BACK Figure 3-8.
Chapter 3 Functions and Operations FREQ/DIST Displays the frequency or 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 3 Functions and Operations NOTE: Using windowing: 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. Windowing reduces the side lobes by smoothing out the sharp transitions at the beginning and end of the frequency sweep. As the side lobes are reduced the main lobe widens thereby reducing the resolution.
Chapter 3 Functions and Operations D is ta n c e T o F a u lt -5 -1 0 -1 5 -2 0 -2 5 R e tu rn L o s s (d B ) -3 0 -3 5 -4 0 -4 5 -5 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 4 0 4 5 5 0 5 5 6 0 F e e t Figure 3-9. Rectangular 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 3-10.
Chapter 3 Functions and Operations 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 3-11. 1 0 1 5 2 0 2 5 3 0 3 5 F e e t 4 0 4 5 5 0 5 5 6 0 4 0 4 5 5 0 5 5 6 0 Low 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 3-12.
Chapter 3 Functions and Operations AMPLITUDE Displays the amplitude or scale menu depending on the measurement mode. Amplitude Menu Provides for changing the display scale and selects segment limit lines. 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. Pressing the LIMIT key on the keypad will also call up this menu.
Chapter 3 Functions and Operations Sweep Menu Provides for changing the display resolution, single or continuous sweep, and access to the Trace Math functions. Choosing SWEEP in FREQ or DTF measurement modes causes the soft keys below to be displayed. q RESOLUTION — Opens the display to change the resolution. Choose 130, 259, or 517 data points. (Not active in DTF mode. In DTF mode, resolution can be adjusted through the DTF-AID table.
Chapter 3 Functions and Operations MARKER Choosing MARKER causes the soft keys, below, to be displayed and the corresponding values to be shown in the message area. Selected frequency marker or distance marker values may be changed using the keypad or Up/Down arrow key. q M1 — Selects the M1 marker parameter and opens the Markers second level menu. q M2 — Selects the M2 marker parameter and opens the Markers second level menu.
Chapter 3 Functions and Operations SYS Displays the System menu softkey selections. q OPTIONS q CLOCK — Displays a second level of functions. — Displays a second level of functions. q SELF TEST q STATUS Options Sub-Menu q UNITS — Start an instrument self test. — Displays instrument status. — 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.
Chapter 3 Functions and Operations RECALL DISPLAY Recalls a trace from memory for viewing or to be used as a trace overlay. Selections are: q TOP OF LIST — Move the selection cursor to the top (first) memory loca- tion. q PAGE UP — Move the selection cursor to the top of the previous trace memory location page. Each page contains 15 trace memory locations. q PAGE DOWN — Move the selection cursor to the top of the next trace memory location page.
Chapter 3 Functions and Operations Power Monitor Menu 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. q UNITS — Toggles between dBm and Watts. q REL — Turns relative mode OFF, if currently ON. If relative mode is currently OFF, turns it ON and causes the power level to be measured and saved as the base level. Subsequent measurements are then displayed relative to this saved value.
Chapter 3 Functions and Operations 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 3-13. SEIKO PRINTER SERIAL CABLE 2000-1012 Site Master S251B 2 1 START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 4 MARKER 8 7 SAVE DISPLAY 625.
Chapter 3 Functions and Operations Step 4. Press the PRINTER soft key and select from the displayed menu of supported printers. Step 5. Press the PRINT key. (Figure 3-15). PRINTER Site Master S251B 1 2 START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 4 MARKER 8 7 SAVE DISPLAY 1384.45 MHz 2096.66 MHz MODE Figure 3-15. ON OFF FREQ/DIST RECALL DISPLAY 9 2500.0 PRINT 6 5 LIMIT 625.0 ESCAPE CLEAR 0 ENTER RUN HOLD +/- PRINT .
Chapter 3 Functions and Operations Symbols Table 3-1 provides a listing of the symbols used as condition indicators on the LCD display. Table 3-1. LCD Icon Symbols Icon HOLD 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. ò dx Integrator Failure T Lock fail indication. Check battery.
Chapter 3 Functions and Operations Error Codes Self Test Errors A listing of Self Test Error messages is given in Table 3-2. Table 3-2. Self Test Error Messages Error Message Description BATTERY LOW Battery voltage is less than 9.5 volts. Charge battery. If condition persists, call your Anritsu Service Center. EXTERNAL POWER LOW External supply voltage is less than 12.5 volts. Call your Anritsu Service Center PLL FAILED Phase-locked loops failed to lock. Charge battery.
Chapter 3 Functions and Operations Range Errors A listing of Range Error messages is given in Table 3-3. Table 3-3. 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 m (ft) The stop distance (D2) exceeds the maximum unaliased range.
Chapter 3 Functions and Operations Table 3-3. Range Error Messages (2 of 2) Error Message Description CANNOT ZERO INPUT SIGNAL TOO HIGH Attempting to perform a Power Monitor zero adjust function with an input of greater than –20 dBm. POWER MONITOR OPTION NOT INSTALLED Attempting to enter Power Monitor mode with no option 5 installed. LIMIT SEGMENTS CANNOT OVERLAP Segment limit lines are not allowed to overlap in frequency or distance.
Chapter 3 Functions and Operations Figure 3-16.
Chapter 3 Functions and Operations 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 3-17). Figure 3-17.
Chapter 4 Measurements Introduction This chapter provides a description of the Site Master measurement functions and examples of frequency domain, distance domain, and two-port (insertion gain or loss) measurements. Measurement Functions Site Master operation is divided into four measurement modes: frequency domain, distance domain, two-port, and power monitor.
Chapter 4 Measurements Power On Procedure The Site Master is designed specifically for field environments and applications requiring mobility. As such, it is a lightweight, handheld, battery operated unit which can be easily carried to any location, and is capable of up to 2.5 hours of continuous operation from a fully charged battery. Built-in energy conservation features allow battery life to be extended over an eight-hour workday. The Site Master can also be powered by a 12.5 Vdc external source.
Chapter 4 Measurements Step 3. Press the ENTER key to select the measurement mode. LOAD OPEN TEST PORT CABLE (OPTIONAL) SHORT LOAD TEST PORT CABLE (OPTIONAL) RF IN TEST PORT RF OUT TEST PORT Site Master S251B 1 2 START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 5 LIMIT 7 SAVE DISPLAY 625.0 2500.0 1384.45 MHz 2096.66 MHz MODE Figure 4-2. FREQ/DIST 9 ON OFF AMPLITUDE ESCAPE CLEAR 4 6 MARKER 8 RECALL DISPLAY 0 ENTER RUN HOLD +/- PRINT .
Chapter 4 Measurements Step 15. Remove the Short, connect the calibrated Load and press the ENTER key. The message “MEASURING LOAD ” will appear. NOTE: For OSLT calibration, the messages “MEASURING LOAD” and “CONNECT LOADS TO RF OUT AND RF IN PORTS” will appear. Step 16. Connect the second calibrated load to the RF In test port and press the ENTER key. The messages “MEASURING ISOLATION” and “CONNECT RF OUT PORT TO RF IN PORT” will appear. Step 17.
Chapter 4 Measurements Step 2. Select the desired setup using the Up/Down arrow key and press ENTER to recall the display. Saving a Display to Memory The following procedure saves a display to memory. 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.
Chapter 4 Measurements Figure 4-5.
Chapter 4 Measurements Figure 4-6. Insertion Loss Mode Calibration Results (Loads at RF Out and RF In) Figure 4-7.
Chapter 4 Measurements Figure 4-8. Insertion Gain Mode Calibration Results (RF Out Connected to RF In) NOTES: For best calibration results–compensation for all measurement system uncertainties–ensure that the Open/Short/Load is at the end of the test port or optional extension cable; that is, at the same point as the antenna or device to be tested will be connected. For best results, use a phase stable Test Port Extension cable.
Chapter 4 Measurements SWR (Return Loss) and Cable Loss Measurement The following frequency domain measurement is an example of a Standing Wave Ratio (or Return Loss) and Cable Loss measurement made over a selectable frequency range. This measurement example determines the quality and loss of the test port cable or device under test.
Chapter 4 Measurements Performing a Calibration Step 13. Press the START CAL key. Follow the instructions that appear in the message area. Step 14. Connect the Open, Short, and Load component to the test port and press the ENTER key as prompted after connecting each component. Refer to the “Performing a Calibration” procedure on page 4-3 for detailed calibration steps.
Chapter 4 Measurements SWR or Return Loss Measurement Step 15. Disconnect the Load and connect the test port extension cable to the Site Master test port. Step 16. Connect the Load to the open end of the test port extension cable as shown in Figure 4-9. OPEN SHORT CALIBRATION LOAD SHORT LOAD MEASUREMENT RFOUT/REFLECTION TEST PORT Site Master S251B 1 2 START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 5 LIMIT 7 SAVE DISPLAY 625.0 2500.0 1384.45 MHz 2096.66 MHz MODE Figure 4-9.
Chapter 4 Measurements Step 24. Enter 6, 2, 5 using the key pad or the Up/Down arrow key. Press ENTER to set the Start Frequency to 625 MHz. Step 25. Use the Up/Down arrow key to scroll to the START FREQ LIMIT parameter and press ENTER to edit the value. Step 26. For FREQ-SWR, enter 1, ., 1, 2. For FREQ-RETURN LOSS, enter 2, 5. Press ENTER to set the Start Frequency Limit value. Step 27. Use the Up/Down arrow key to scroll to the STOP FREQ parameter and press ENTER to edit the value. Step 28.
Chapter 4 Measurements Setting the Markers The following procedure sets the markers. Step 32. Press the MARKER key to call up the Markers menu. Step 33. Press the M1 soft key to select the M1 marker function. Press the EDIT soft key and enter 8, 2, 4 using the keypad or Up/Down arrow key. Press ENTER to set M1 to 824 MHz. (Note: pressing the ON/OFF soft key activates or deactivates the M1 marker function.) Step 34. Press the BACK soft key to return to the Markers menu. Step 35.
Chapter 4 Measurements Cable Loss Measurement The following frequency domain measurement is an example of a Cable Loss measurement made over a selectable frequency range following the Marker setting steps 32 to 35. NOTE: If SWR/Return Loss measurement has not been done, calibration must be performed before determining the cable loss. Step 36. Disconnect the load from the end of the cable and replace it with a short. Step 37. Press the MODE key. Step 38.
Chapter 4 Measurements Step 51. Enter 9, 6, 0 using the key pad or the Up/Down arrow key. Press ENTER to set the Stop Frequency to 960 MHz. Step 52. Use the Up/Down arrow key to scroll to the STOP FREQ LIMIT parameter and press ENTER to edit the value. Step 53. Enter ., 5, 5. Press ENTER to set the Stop Frequency Limit value. Step 54. Press ENTER at OK to accept the values and activate the Segment 1 limit line. Step 55. Press the SELECT SEGMENT soft key and use the Up/Down arrow key to scroll to segment #2.
Chapter 4 Measurements DTF Measurement The following distance domain measurement is an example of a Distance-to-Fault (DTF) measurement over a selectable distance range. Required Equipment · Site Master Model S251B · Precision Open/Short, Anritsu 22N50 and Precision Load, Anritsu SM/PL or Precision Open/Short/Load, Anritsu OSLN50LF · Test Port Extension Cable, Anritsu 15NNF50-1.5A Device-Under-Test Specification Type Typical Loss @1.5m Vg Return Loss SWR 15NNF50-1. 5A 0.4 dB @ 625 MHz 0.
Chapter 4 Measurements Step 7. Use the Up/Down arrow key to scroll to F1, then press ENTER to select the start frequency F1. Step 8. Enter 6, 2, 5 using the keypad or the Up/Down arrow key. Press ENTER to set F1 to 625 MHz. Step 9. Use the Up/Down arrow key to scroll to F2, then press ENTER to select the start frequency F2. Step 10. Enter 2, 5, 0, 0 using the keypad or the Up/Down arrow key. Press ENTER to set F2 to 2500 MHz. Step 11.
Chapter 4 Measurements DTF Measurement (Determining the Length of the Cable) Step 15. Disconnect the Load and connect the test port extension cable to the Site Master test port. Step 16. Connect the Short to the open end of the test port extension cable. NOTE: The number of data points displayed can be changed by selecting RES in the DTF AID table. Setting the Amplitude Scale Step 17. Press the AMPLITUDE or LIMIT key to call up the Scale Menu.
Chapter 4 Measurements Figure 4-13. DTF - SWR Measurement Results (cable length) Figure 4-14.
Chapter 4 Measurements DTF Measurement (Determining the quality of the cable.) NOTE: If cable length measurement has not been done, calibration must be done before determining the quality of the cable (steps 1-15). Step 24. Disconnect the Short and connect the Load to the test port extension cable Setting the Amplitude Scale Step 25. Press the AMPLITUDE or LIMIT key to call up the Scale Menu.. Optional: Press the AUTO SCALE key to optimize the amplitude scale. Step 26.
Chapter 4 Measurements Figure 4-15. DTF - SWR Measurement Results (cable quality) Figure 4-16.
Chapter 4 Measurements Insertion Gain (Amplifier) Measurement The following frequency domain measurement is an example of a Insertion Gain (Amplifier) measurement over a selectable frequency range. Insertion loss measurements, such as antenna-to-antenna isolation and filter rejection (isolation), follow the same procedures as below except in Insertion Loss (+6 dBm) measurement mode.
Chapter 4 Measurements Step 11. Connect the Open, Short, Loads, and through adapter to the test port extension cable and press the ENTER key as prompted. Refer to the Calibration Procedure earlier in this chapter for detailed calibration instructions. NOTE: The number of data points displayed can be changed by selecting RES in the DTF AID table.
Chapter 4 Measurements Amplifier Gain Measurement Step 12. Disconnect the 7/16(f) adapter. The resulting display should be similar to Figure 4-19 Figure 4-19. Measurement Display Before Amplifier Connection A n t T x P C \R S F A m p Step 13. Connect the amplifier to the test port extension cables as shown in Figure 4-20.
Chapter 4 Measurements Step 16. Press the EDIT soft key and enter 1, 8, 8, 5 using the keypad or Up/Down Arrow key. Press ENTER to set M1 to 1885 MHz. NOTE: Pressing the ON/OFF soft key activates or deactivates the M1 marker function. Step 17. Press the BACK soft key to return to the Markers menu. Step 18. Repeat the above steps for markers M2, M3, and M4. Set M2 to 1910 MHz, M3 to 1965 MHz, and M4 to 1990 MHz. Observe the bypass condition (Figure 4-21). Figure 4-21.
Chapter 4 Measurements Step 23. Press the BOTTOM soft key and enter 9, 0 – using the keypad or Up/Down arrow key. Press ENTER to set the bottom scale to –90. Observe the display of amplifier gain performance (Figure 4-22). NOTE: Alternatively, press the AUTO SCALE key to set the top and bottom display scale. Figure 4-22. Measurement Display of Amplifier Gain Step 24. Press the MARKER key to display the marker value. NOTE: Refer to page 4-4 for instructions on saving and recalling a setup or display.
Chapter 4 Measurements Making Power Measurements Power measurement is accomplished using a broadband (1 MHz to 3000 MHz) RF detector, P/N 5400-71N50. The power monitor displays measured power in dBm or Watts. Entering Power Monitor Mode Step 1. Press the MODE key. Step 2. Use the Up/Down arrow key to scroll to POWER MONITOR. Press ENTER to select power monitor mode. Zeroing the Power Monitor Step 3. With no power applied to the DUT, press the ZERO soft key from the Power menu.
Chapter 5 Software Tools Program Description The Site Master Software Tools program provides the means for transferring the measured trace, along with any applied markers and/or a limit, to the screen of an MS-DOS based personal computer (PC) running Windows 95/98/NT. Requirements The Site Master Software Tools program is a standard Windows program and will run on any computer that will run Windows 95/98/NT.
Chapter 5 Software Tools Program Step 6. Choose Port Settings, then change to the following settings if necessary. Baud Rate: 9600 Data Bits: 8 Parity: None Stop Bits: 1 Flow Control: None Step 7. Choose Resource and verify the COM Port Base Address and IRQ. Click OK when done. Step 8. Click OK again to close the System Properties window. Figure 5-1. Windows 95/98/NT COM Port Setting Dialog Boxes Note: If you changed the COM Port Base Address and/or IRQ, you will need to restart Windows.
Chapter 5 Software Tools Program Software Installation The Site Master Software Tools program is a conventional Microsoft Windows program. Installation is similar to all other such programs. For users new to Windows, a detailed procedure is given below. Step 9. Insert the Anritsu Site Master Software Tools For Windows disk in the CDROM drive. Step 10. Select Run under the Start menu. Step 11. Type x:\SETUP, where x = the drive letter of the CDROM drive. Step 12.
Chapter 5 Software Tools Program Capture multiple traces to a database Step 1. Connect the supplied cable as shown in Figure 5-2. Serial Interface Site Master S251B 1 2 START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 5 LIMIT 7 SAVE DISPLAY 625.0 2500.0 1384.45 MHz 2096.66 MHz MODE Figure 5-2. FREQ/DIST 9 ON OFF AMPLITUDE ESCAPE CLEAR 4 6 MARKER 8 RECALL DISPLAY 0 ENTER RUN HOLD +/- PRINT . SYS COM port (Program defaults to COM2) SWEEP Serial Cable Connection Step 2.
Chapter 5 Software Tools Program Custom Cable List Uploading and Downloading Custom cable parameters can be uploaded to the Site Master or downloaded from the Site Master and saved via the Site Master Software Tools Cable Editor. Uploading a Cable List to the Site Master Custom Cable Table Step 1. Connect the supplied cable as shown in Figure 5-2. Step 2. Open the Cable Editor by clicking on Start, Programs, Site Master Software Tools 32 bit and Cable Editor.
Chapter 5 Software Tools Program Program Operation The captured trace on the PC can be scaled and have its limit line, markers, and properties changed. (Click on the Plot Properties icon, or select Plot Properties under the View menu to make these changes.) The operation of the various menus that allow these operations to be accomplished is straightforward. To read about the operation of the menus, refer to the on-line help screens, accessed from the Help menu in the top menu bar.
Chapter 5 Software Tools Program Saving a Plot as a Windows Metafile or as a Spreadsheet File Plots can be saved as Windows metafile (.wmf) or as a text file (.txt). The metafile may be imported into graphic programs and a text file can be imported into a spreadsheet program, but they cannot be reloaded into the Site Master Software Tools program. To save a plot as a Windows Metafile, click on File, in the top menu bar, and select Save as Metafile from the drop down menu.
Chapter 5 Software Tools Program Each cable/antenna tends to have a unique Distance-To-Fault (DTF) “Signature” because differing cable electrical lengths, cable types, dielectric thickness variations, and the positions of components (connectors, adapters, and lightning arresters) will cause different reflections at differing positions in the transmission line. Variations in the “signature” between maintenance intervals offer a good indication of damage or damage causing conditions.
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 in dB/m @1000 MHz” values. Table A-1. Coaxial Cable Technical Data (1 of 2) Cable Type Relative Propagation Velocity (Vf ) RG8, 8A RG9, 9A RG17, 17A RG55, 55A, 55B RG58, 58B RG58A, 58C RG142 RG174 RG178B RG188 RG213 RG214 RG223 FSJ1-50A FSJ2-50 FSJ4-50B LDF4-50A LDF5-50A LDF6-50 LDF7-50A LDF12-50 HJ4-50 HJ4.
Appendix A Reference Data Table A-1. Coaxial Cable Technical Data (2 of 2) Cable Type Relative Propagation Velocity (Vf ) LMR600 LMR900 LMR1200 LMR1700 HCC12-50J HCC78-50J HCC158-50J HCC300-50J HCC312-50J HF 4-1/8" Cu2Y HF 5" Cu2Y HF 6-1/8" Cu2Y FLC 38-50J FLC 12-50J FLC 78-50J FLC 114-50J FLC 158-50J CR50 540PE CR50 1070PE 310801 311201 311501 311601 311901 352001 0.870 0.870 0.880 0.890 0.915 0.915 0.950 0.960 0.960 0.970 0.960 0.970 0.880 0.880 0.880 0.880 0.880 0.880 0.880 0.820 0.800 0.800 0.
