4.5.3 Main Board Assembly...................................................................... 54
4.5.4 Chassis Assembly ............................................................................. 56
4.5.5 GPIB Assembly .................................................................................. 58
5 REPLACEABLE PARTS ............................................................................................. 61
5.1 INTRODUCTION ............................................................................................... 61
5.2 PARTS LIST ..................................................................................................... 61
5.3 LAYOUT DRAWINGS ........................................................................................ 82
6 SIMPLE CALIBRATION PROCEDURES .................................................................... 85
6.1 THE CALIBRATION SECURITY CODE ............................................................... 85
6.2 THE ZERO ADJUSTMENT ................................................................................. 85
6.3 THE GAIN ADJUSTMENT FOR DCV, DCI, 4W & FREQ ............................................... 86
6.4 THE GAIN ADJUSTMENT FOR ACV ........................................................................... 87
6.5 CALIBRATION COUNT ............................................................................................ 88
6.6 CALIBRATION DATE .............................................................................................. 88
6.7 THE CALIBRATION ERROR MESSAGES ........................................................... 88
APPENDIX ............................................................................................................................. 89
A. SPECIFICATION LIST ....................................................................................... 89
B. GENERAL SPECIFICATIONS ............................................................................. 92