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MAINTENANCE MANUAL

Site Master™ Models S113C, S331C and S115BQ

Antenna and Cable Analyzers

1. INTRODUCTION

This manual provides maintenance instructions for

the Site Master S113C/S331C and S115BQ Antenna

and Cable Analyzer. It describes the product and

provides performance verification procedures, parts

replacement procedures, and a replaceable parts list.

2. DESCRIPTION

The Site Master (Figure 1) is a hand held SWR/RL

(standing wave ratio/return loss), and Dis

tance-To-Fault measurement instrument. It com

bines a synthesized source, VSWR Bridge, and re

ceiver on a single printed circuit board (PCB). An

optional power monitor is also available. A block dia

gram is shown in Figure 2.

3. PERFORMANCE VERIFICATION

Paragraphs 4 through 9 contain tests that can be

used to verify the performance of the Site Master

models S113C/ S331C and S115BQ having any ver

sion of firmware.

3.1. Initial Setup for Testing

1. Press and hold the

ESCAPE/CLEAR key,

then press the

ON/OFF key to turn on the

Site Master. (This sets the instrument to

the factory preset state.)

2. Release the

ESCAPE/CLEAR key and use

the Up/Down arrow key to adjust the

contrast to give a readable display.

Figure 1. Site Master Model S331C

490 JARVIS DRIVE · MORGAN HILL, CA 95037-2809

P/N: 10580-00062

REVISION A

PRINTED: FEBRUARY 2002

Summary of content (16 pages)

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MAINTENANCE MANUAL Site Master™ Models S113C, S331C and S115BQ Antenna and Cable Analyzers Figure 1. 1. Site Master Model S331C INTRODUCTION This manual provides maintenance instructions for the Site Master S113C/S331C and S115BQ Antenna and Cable Analyzer. It describes the product and provides performance verification procedures, parts replacement procedures, and a replaceable parts list. 3.
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C o u p le r D iv id e r / M u ltip lie r R F S o u rc e x T e s t P o rt x L O S D S D A D C D is p la y Figure 2. 4. The following test can be used to verify the CW frequency accuracy of the Site Master. Measurement calibration of the Site Master is not required for this test. 2. Press the FREQ/DIST key, then press the F1 soft key and set F1 to 1000 MHz, then press the ENTER key. 3. Press the F2 soft key, set F2 to 1000 MHz, then press the ENTER key. 4.
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(g) Press the 1, 0 and kHz keys sequentially to change the RBW to 10 kHz. 5. (h) Press the VBW key. The following test can be used to verify the accuracy of return loss measurements. Measurement calibration of the Site Master is required for this test. (i) Press the Filter Off soft key (F3) to turn the VB filter off. (j) Press the Amplitude key. RETURN LOSS VERIFICATION a.
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Attenuators 560-7N50B RF Detector MA2418A Reference Source 50 MHz, 50 W 0dBm 15-24V DC 20 mA MA2418A Reference Source Site Master S331C 1 2 START CAL AUTO SCALE SAVE SETUP RECALL SETUP 3 5 LIMIT 7 SAVE DISPLAY 9 ON OFF MODE FREQ/DIST AMPLITUDE ESCAPE CLEAR 4 6 DC Power Supply 2000-933 MARKER 8 RECALL DISPLAY 0 ENTER RUN HOLD +/- PRINT . SYS SWEEP Site Master w/ Option 5 Installed Figure 3. 6. Power Monitor Verification 4.
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7. INSTACAL MODULE VERIFICATION This test verifies the performance of the Anritsu Site Master InstaCal Calibration Module. The InstaCal Module, part number ICN50, is an optional accessory for the S113C, S331C, and S115BQ. NOTE Full verification of the InstaCal module over its entire frequency range (2 - 4000 MHz) requires both an S113C (or S115BQ) and an S331C Site Master. However, limited verification is possible with either instrument for the frequency range of that instrument only.
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Open/Short 50 Ohm Termination Termination under Test 541XXA Scalar Measurement System Beadless End Precision Air Line Connect Dashed Line Connections When Directed By Procedure A B Source Adapter Figure 4. 8. 541XXA Precision Return Loss Setup TERMINATION VERIFICATION This test verifies the accuracy of the Site Master SM/PL termination using the precision return loss mode of the 541XXA Scalar Measurement System.
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11. Press the Calibration key. 12. At the CALIBRATION menu display, use the Menu up-down keys to highlight START CAL, then press the Select key. 13. At the PRECISION RETURN LOSS CALIBRATION menu display prompt, connect the Offset SWR Autotester to Input A, if you have not done so yet. 14. CAUTION During both calibration and measurement, be sure to properly align the bead-less connector of the airline. When the connectors are mis-aligned, a spike will usually be visible on the display.
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9. BATTERY PACK REMOVAL AND REPLACEMENT This procedure provides instructions for removing and replacing the Site Master battery pack. 1. With the Site Master standing upright on a stable surface, locate the battery access door (Figure 7). BATTERY ACCESS DOOR Figure 9. Figure 7. 2. Battery Access Door Location Lift up the access door handle and rotate it 90 degrees counterclockwise, as illustrated in Figure 8. Figure 10. 5. Figure 8. Removing the Battery Replacement is the opposite of removal.
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10. BATTERY INFORMATION The following information relates to the care and handling of the Site Master battery, and NiMH batteries in general. · 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). · Use only Anritsu approved battery packs.
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11. FRONT PANEL ASSEMBLY REMOVAL AND REPLACEMENT 7. Carefully disconnect the LCD display backlight cable from J15 on the main PCB. This procedure provides instructions for removing and replacing the Site Master front panel assembly. With the front panel assembly removed, the LCD display, keypad PCB, keypad membrane, and main PCB assemblies can be removed and replaced. J15 J4 1. Place the Site Master face up on a work surface. 2.
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12. LCD ASSEMBLY REPLACEMENT 13. KEY PAD PCB REPLACEMENT This procedure provides instructions for removing and replacing the Liquid Crystal Display (LCD) once the front panel assembly has been separated from the Site Master. This procedure provides instructions for removing and replacing the key pad PCB. 1. 2. 3. 4. 1. Remove the front panel assembly as directed in section 11. Remove the front panel assembly as directed in section 11. 2.
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14. KEY PAD MEMBRANE REPLACEMENT 15. MAIN PCB ASSEMBLY REPLACEMENT This procedure provides instructions for replacing the key pad membrane. This procedure provides instructions for replacing the main PCB assembly with the connector panel attached. 1. Remove the front panel assembly as directed in section 11. 2. Remove the key pad PCB as directed in section 13. 3. Remove the keypad membrane by gently pulling the membrane up and out of the holes in the front panel.
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16. REPLACEABLE PARTS Replaceable parts for the Site Master Model S113C/S331C and S115BQ are listed below. Table 1. Replaceable Parts List Part Number Description Qty Part Number Description Qty Hardware Accessories 900-861 Pan Head Screw, 4-20, 0.365 15 900-869 Screw, 4-40, 0.875 4 900-720 Screw, 4-40, 0.187 3 900-697 Screw, 4-40, 0.312 3 1 785-929 M-F Stand off, 4-40, 11/16 3 Universal AC Adapter 1 900-326 Kep Nut, 4-40, 0.
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NOTES
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Table 2. Anritsu Service Centers UNITED STATES FRANCE SINGAPORE ANRITSU COMPANY 685 Jarvis Drive Morgan Hill, CA 95037-2809 Telephone: (408) 776-8300 FAX: 408-776-1744 ANRITSU S.A 9 Avenue du Quebec Zone de Courtaboeuf 91951 Les Ulis Cedex Telephone: 016-09-21-550 FAX: 016-44-61-065 ANRITSU (SINGAPORE) PTE LTD 10, Hoe Chiang Road #07-01/02 Keppel Towers Singapore 089315 Tel:65-282-2400 Fax:65-282-2533 ANRITSU COMPANY 10 NewMaple Ave.
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