Operating instructions

ii Contents
Vertical Automatic Drive Unit/QAM Automatic Drive Unit...............................................................................................3-11
VADU/VQADU Pads and Levels.....................................................................................................................................3-12
Return Path Alignment...................................................................................................................................................................3-12
Before You Begin...................................................................................................................................................................3-12
Alignment Procedure ............................................................................................................................................................3-13
Powering and Surge Protection....................................................................................................................................................3-14
Section 4
Bench Testing
Before You Begin..............................................................................................................................................................................4-1
Test Equipment and Connections ..................................................................................................................................................4-2
Measuring Forward Gain .................................................................................................................................................................4-3
Example............................................................................................................................................................................4-3
Testing Return Gain and Response................................................................................................................................................4-4
Example............................................................................................................................................................................4-5
Completing the Test Procedures....................................................................................................................................................4-5
Section 5
Installation
Aerial Installation..............................................................................................................................................................................5-1
Pedestal Installation.........................................................................................................................................................................5-3
Grounding .........................................................................................................................................................................................5-3
Section 6
Operating Tips
Using Amplifiers in Lower Frequency Systems............................................................................................................................6-1
Using Amplifiers in Lower Gain Systems......................................................................................................................................6-1
Appendix A
Specifications
Model MBV3-100*.............................................................................................................................................................................A-1
AC Current........................................................................................................................................................................................A-2
Return Amplifier...............................................................................................................................................................................A-2
VADU Automatic Drive Unit............................................................................................................................................................A-2
Appendix B
Torque Specifications
Abbreviations and Acronyms
MBV3-100* Installation and Operation Manual