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Site Master
Model S251B
Antenna and
Cable Analyzer
User's Guide
Hand-Held Tester for Transmission Lines
and other RF Components
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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 1-1 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 Calibration ..................................1-7 Annual Verification............
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Selecting the Frequency Range ..........................4-3 Performing a Calibration .............................4-3 Setting the Amplitude Scale ............................4-4 Saving the Setup ..................................4-4 Recalling a Setup ..................................4-4 Saving a Display to Memory............................4-5 Recalling a Display From Memory ........................4-5 SWR (Return Loss) and Cable Loss Measurement ............4-9 Required Equipment..............
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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..................................5-3 Capture multiple traces to a database.......................5-4 Capture single or multiple traces to PC screen..................5-4 Custom C
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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 S251B. 1 Throughout this manual, the term Site Master will refer to the S251B. Model Frequency Range Ports S251B 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 instrumen
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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. 15NN50-1.5A 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. 15ND50-1.5A 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: 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 0.01 dB **Distance-To-Fault (DTF): Range (in meters) 0 to (Resolution
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Chapter 1 General Information Table 1-2. Performance Specifications (2 of 2) 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: External DC Input +12.5 to +15 Vdc, 1100 mA max. Temperature: Sto
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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 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 per- formed prior to making a measurement in the field. A built-in temperature sensor in the Site Master advises the user, via an icon located on the right side of the LCD screen, that the in- ternal temperature has exceeded a safety window, and the user is advised to perform an- other
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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. 26-5 Morgan Hill, CA 95037-2809 416W, 5 Dong San Huan Bei Lu Yeoido Dong, Youngdeungpo Telephone: (408) 776-8300, Chaoyang qu Seoul Korea 150 010 1-800-ANRITSU Beijing 100004, China Telephone: 02-782-7156 FAX: 408-776-1744 Telephone: 011065909237 FAX: 02-782-4590 FAX: 0110659092
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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 num- ber: 2000-1029). Charging a New Battery New batteries normally require three to five charge and discharge cycles before attaining maximum performance. The NiMH battery supplied with the S
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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. If a battery fails to charge, contact your n
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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. At this point, your S
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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. If left unused a fully charged battery will discharge
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Chapter 3 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 3 Functions and Operations Test Connector Panel The connectors and indicators located on the test panel are listed and described below. 12.5-15VDC 12.5 to 15 Vdc @ 1100 mA input to power the unit or for battery charging. (1100 mA) 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 equip- ment in this manner, there is a risk of receiving a severe or fatal electric shock. Battery
