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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
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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 defec- tive during the warranty period. Buyers shall prepay transportation charges for equipment returned to Anritsu for warranty repairs. Obligation is limited to the origi- nal purchaser. Anritsu is not liable for consequential damages. LIMITATION OF WARRANTY
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Table of Contents Chapter 1 - General Information Introduction ..................................1-1 Description...................................1-1 Standard Accessories .............................1-1 Options.....................................1-2 Optional Accessories..............................1-2 Performance Specifications ..........................1-3 Preventive Maintenance............................1-6 ESD Precautions................................1-6 Annual Verification ...........
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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 .......................3-7 Changing the Units ..............................3-7 Changing the Display Language........................3-7 Printing.....................................3-8 Prin
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Appendix A - Reference Data Coaxial Cable Technical Data.........................A-1 Appendix B - Windowing Introduction ..................................B-1 Examples ...................................B-1 iii/iv
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Chapter 1 General Information Introduction This chapter provides a description, performance specifications, optional accessories, pre- ventive maintenance, and calibration requirements for the Site Master model S251C. 1 Throughout this manual, the term Site Master will refer to the S251C. Model Frequency Range Ports S251C 625 to 2500 MHz 2 Description The Site Master is a hand held SWR/RL (standing wave ratio/return loss), transmission gain/loss and Distance-To-Fault (DTF) measurement instrument
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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. This program contains Fault Lo- cation (DTF) and Smith Chart functions Serial Interface Cable (null modem type) One year Warranty (includes battery, firmware, and software) User's Guide Options Option 5 — Add RF Wattmeter Power Monitor Option 10A Add Bias Tee O
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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. 15ND50-1.5C RF Detector, 1 to 3000 MHz,
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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. Description Value 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 0.01 dB **Distance-To-Fault (DTF): Range (in meters) 0 to (Resolutio
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Chapter 1 General Information Table 1-2. Performance Specifications (2 of 2) Cable Insertion Loss: Range 0.00 to 54.00 dB Resolution 0.01 dB Bias Tee input voltage: 12.5 to 15.0 Vdc output current: 270 ma maximum surge, 25 ms 240 ma maximum steady General Internal Memory: Trace Memory 200 maximum Instrument config. 10 setup locations with associated calibration RS-232 9 pin D-sub, three wire serial Electromagnetic Compatibility Meets European Community requirements for CE marking Power Supply: E
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Chapter 1 General Information Preventive Maintenance Site Master preventive maintenance consists of cleaning the unit and inspecting and clean- ing 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 abra- sive cleaners. Clean the RF connectors and center pins with a cotton swab dampened with denatured alco- hol.
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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 cen- ters are listed in Table 1-2 on the following page. The Site Master itself is self-calibrating, meaning that there are no field-adjustable compo- nents. However, the OSL calibration components are crucial to the integrity of the calibra- tion and therefore, must be verif
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Chapter 1 General Information Table 1-2. Anritsu Service Centers UNITED STATES GERMANY SOUTH AFRICA ANRITSU COMPANY ANRITSU GmbH ETESCSA 685 Jarvis Drive Grafenberger Allee 54-56 12 Surrey Square Office Park Morgan Hill, CA 95037-2809 D-40237 Dusseldorf 330 Surrey Avenue Telephone: (408) 776-8300 Germany Ferndale, Randburt, 2194 FAX: 408-776-1744 Telephone: 0211-968550 South Africa FAX: 0211-9685555 Telephone: 011-27-11-787-7200 ANRITSU COMPANY Fax: 011-27-11-787-0446 10 NewMaple Ave., Suite 305
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Chapter 2 Functions and Operations Introduction This chapter provides a brief overview of the Site Master functions and operations, provid- ing the user with a starting point for making basic measurements. For more detailed infor- mation, refer to Chapter 4, Measurements and Chapter 5, Software Tools. 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
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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 key- pad hard keys are dual purpose, depending on the current mode of operation. The
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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. AMPLITUDE Displays the amplitude s
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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 per- form measurements. The plus/minus key is used to enter positive or negative va
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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 Automatically scales the display for optimum resolution. SCALE LIMIT Displays the limit menu of the current operating mode. MARKER Displays the marker menu of the current ope
