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3-16 PULSE MODULATION TEST: RF ON/OFF RATIO 3-45
Test Setup
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3-45
Test Procedure
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3-45
3-17 PHASE MODULATION TESTS
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3-48
Test Setup
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3-48
FM Input Sensitivity Procedure
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3-48
Chapter 4 - Calibration
4-1 INTRODUCTION
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4-3
4-2 RECOMMENDED TEST EQUIPMENT
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4-3
4-3 TEST RECORDS
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4-3
4-4 CALIBRATION FOLLOWING SUBASSEMBLY
REPLACEMENT...................4-4
4-5 CONNECTOR AND KEY LABEL NOTATION . . . 4-4
4-6 INITIAL SETUP....................4-7
Interconnection .................4-7
PC Setup — Windows 3.1 ............4-8
PC Setup — Windows 95 ............4-10
4-7 PRELIMINARY CALIBRATION ..........4-13
Equipment Setup ................4-13
Calibration Steps ................4-14
4-8 SWITCHED FILTER SHAPER CALIBRATION
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4-17
Equipment Setup
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4-17
Log Amplifier Zero Calibration
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4-18
Limiter DAC Adjustment
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4-18
Shaper DAC Adjustment
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4-19
4-9 RF LEVEL CALIBRATION
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4-22
4-10 ALC SLOPE CALIBRATION
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4-23
Equipment Setup
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4-23
ALC Slope DAC Adjustment
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4-24
4-11 ALC BANDWIDTH CALIBRATION
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4-31
Equipment Setup
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4-31
Bandwidth Calibration
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4-31
iv 682XXB/683XXB MM
Table of Contents (Continued)