Section 15 APPENDICES
231
terminated in 600•, a drop of 2.5 dB will be observed. This is due to the voltage divider
effect of the internal resistance being loaded by the external 600•.
Incidentally, +4 dBu is 1.23 VAC, and this value can be read on a Digital Voltmeter (such
as the common Fluke) to confirm that this level is what you have.
+4 dBu
+4 dBu
100
100
20 K
Here, the output is loaded with a high impedance, as would
be the case with modern equipment. The Zephyr’s voltage
level is conveyed to the load with no noticeable
attenuation.
+4 dBu
+1.5dBu
100
100
600
When a 600 • load is used, the voltage divides, with 2.5 dB
being lost in the Zephyr’s internal source resistance. Note
that, in this case, the meter across the 600 • resistor can
be said to be indicating dBu or dBm.
Summary of Contents for Zephyr
Page 13: ...Table of Contents 13 SECTION 1 QUICK RESULTS ...
Page 26: ...Section 2 INTRODUCTION 26 This page intentially left blank ...
Page 27: ...Section 2 INTRODUCTION 27 SECTION 2 INTRODUCTION ...
Page 38: ...Section 2 INTRODUCTION 38 This page intentionally left blank ...
Page 39: ...39 SECTION 3 ZEPHYR AT A GLANCE ...
Page 52: ...Section 4 INSTALLATION BASIC OPERATION 52 This page intentionally left blank ...
Page 53: ...Section 4 INSTALLATION BASIC OP 53 SECTION 4 INSTALLATION BASIC OPERATION ...
Page 84: ...Section 4 INSTALLATION BASIC OPERATION 84 ...
Page 85: ...Section 5 ISDN 85 SECTION 5 ISDN ...
Page 105: ...Section 6 NON ISDN NETWORKS 105 SECTION 7 AUDIO CODING ...
Page 118: ...Section 7 AUDIO CODING PRINCIPLES 118 This page intentionally left blank ...
Page 119: ...Section 8 DETAILED MENU REFERENCE 119 SECTION 8 DETAILED MENU REFERENCE ...
Page 157: ...Section 9 REMOTE CONTROL 157 SECTION 9 REMOTE CONTROL ...
Page 176: ...Section 9 REMOTE CONTROL 176 This page intentionally left blank ...
Page 177: ...Section 10 ADVANCED PROBLEM SOLVING 177 SECTION 10 ADVANCED PROBLEM SOLVING ...
Page 196: ...Section 10 ADVANCED PROBLEM SOLVING 196 This page intentionally left blank ...
Page 197: ...Section 11 TECHNICAL INFORMATION 197 SECTION 11 DETAILED TECHNICAL INFORMATION ...
Page 219: ...Section 12 SCHEMATICS 219 SECTION 12 SCHEMATICS ...
Page 221: ...Section 13 MANUFACTURER S DATA SHEETS 221 SECTION 13 MANUFACTURER S DATA SHEETS ...
Page 223: ...Section 14 SPECIFICATIONS WARRANTY 223 SECTION 14 SPECIFICATIONS AND WARRANTY ...
Page 228: ...228 This page intentionally left blank ...
Page 229: ...Section 15 APPENDICES 229 SECTION 15 APPENDICES ...