Anritsu Site Master S251C Maintenance Manual
Anritsu Site Master S251C Maintenance Manual

Anritsu Site Master S251C Maintenance Manual

Antenna and cable analyzer
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A l l t e s t I n s t r u me n t s , I n c .
5 0 0 C e n t r a l A v e .
F a r mi n g d a l e , N J 0 7 7 2 7
P : ( 7 3 2 ) 9 1 9 - 3 3 3 9
F : ( 7 3 2 ) 9 1 9 - 3 3 3 2
a l l t e s t . n e t
s s a l e s @ a l l t e s t . n e t
T h e t e s t & me a s u r e me n t
e q u i p me n t y o u n e e d a t
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u s e d / r e f u r b i s h e d b e n c h t o p t e s t & me a s u r e me n t
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a v a i l a b l e w i t h c e r t i f i e d c a l i b r a t i o n f r o m o u r i n - h o u s e s t a f f
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t
G e t a q u o t e t o d a y !
C C a l l ( 7 3 2 ) 9 1 9 - 3 3 3 9 o r e ma i l s a l e s @a l l t e s t . n e t .

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Summary of Contents for Anritsu Site Master S251C

  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2: Performance Verification

    3. PERFORMANCE VERIFICATION This manual provides maintenance instructions for Paragraphs 4 through 10 contain tests that can be the Site Master S251C Antenna and Cable Analyzer. used to verify the performance of the Site Master It describes the product and provides performance model S251C having any version of firmware.
  • Page 3: Frequency Accuracy

    7. Set up the Spectrum Analyzer as follows: a. Equipment Required: (a) Press Preset · Spectrum Analyzer (b) Press the soft key PRESET ALL Anritsu Model MS2668C or equivalent (c) Press and enter 1 GHz Frequency b. Procedure: (d) Press and enter 200 kHz Span 1.
  • Page 4 SAVE form a OSL-THRU-ISOL calibration using a DISPLAY DISPLAY HOLD PRINT 22NF50 Open/Short, 28NF50-2 or SM/PLNF MODE FREQ/DIST AMPLITUDE SWEEP Terminations, and 15NN50-1.5A Test Port Ex- tension Cable (refer to Figure 3). Figure 4. Test Setup Site Master S251C MM...
  • Page 5: Return Loss Verification

    Port and verify that the reading is 20 dB ±1.7 dB a. Equipment Required: · 20 dB offset, Anritsu SC5270 7. Connect the 6 dB offset to the RF Out Test Port and verify that the reading is 6 dB ·...
  • Page 6 (This sets the instrument to the factory preset state.) 1. Connect the AC-DC Adapter Power Supply to 3. Press the key. the battery charging port on the Site Master 4. Press the soft key. OPTIONS Site Master S251C MM...
  • Page 7 RUN/HOLD · Open/Short, Anritsu 22N50 is pressed. · 50 Ohm Termination, Anritsu 26N50 10. Verify the test port voltage relay clicks on and · Source Adapter, Anritsu 34NN50A off, and is shown in the upper left cor- FAULT ner of the display.
  • Page 8 50 Ohm Termination. Open/Short 50 Ohm Termination Termination under Test Beadless 541XXA Scalar Measurement System Precision Air Line Connect Dashed Line Connections When Directed By Procedure Offset SWR Source Autotester Adapter Figure 6. 541XXA Precision Return Loss Setup Site Master S251C MM...
  • Page 9 Se- lect key to begin the measurement. 23. Press the key to On. Cursor On/Off 24. Observe the Cursor menu readout. The mini- mum return loss reading for the SM/PL ter- mination should be 42 dB. Site Master S251C MM...
  • Page 10: Battery Pack Removal And Replacement

    Lift the door and remove, as illustrated in Figure 11. Grasp the battery lanyard and pull the bat- tery straight up and out of the unit, as illus- trated in Figure 12. Figure 13. Battery Orientation Site Master S251C MM...
  • Page 11: Battery Information

    Site Master or in the op- tional battery charger (Anritsu part number: 2000-1029). · Use only Anritsu approved battery packs. · Recharge the battery only in the Site Master or in an Anritsu approved charger. · With a new NiMH battery, full performance is achieved after three to five complete charge and discharge cycles.
  • Page 12: Front Panel Assembly Removal And Replacement

    Carefully depress the latch tab and discon- Figure 17. Corner Bumper Detail nect the LCD display cable from J12 on the main PCB. Carefully disconnect the keypad interface ca- ble from J1 on the main PCB. Site Master S251C MM...
  • Page 13: Lcd Assembly Replacement

    Figure 19. Front Panel Keypad PCB Location Remove the rubber cushion pad from the LCD assembly and remove the assembly. Reverse the above steps to install the re- placement assembly. Reverse the above steps to install the re- placement assembly. Site Master S251C MM...
  • Page 14: Key Pad Membrane Replacement

    PCB. NOTE The main PCB connector panel fits into grooves in the two halves of the Site Master case. Make sure the panel is cor- rectly aligned with the grooves before reassembling the two halves together. Site Master S251C MM...
  • Page 15: Replaceable Parts

    Option 10B 48271 Foam, Battery Compartment Main PCB Assembly, S251C with ND60690 Option 05 and Option 10B 720-19 Cable Clamp 52737-3 Keypad PCB Assembly 790-515 Spring, Battery Compartment 46649-1 Membrane Keypad, Main 55217 ID Label, Model S251C Site Master S251C MM...
  • Page 16 Table 2. Anritsu Service Centers UNITED STATES GERMANY SOUTH AFRICA ANRITSU COMPANY ANRITSU GmbH ETESCSA 490 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...

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