This manual describes the maintenance and operation of the FOM-7900B Fiber Optic System and modules. We recommend that you read this manual before operating the FOM-7900B Fiber Optic System. CHAPTER 2 System Overview Before using the FOM-7900B Fiber Optic System the user should become familiar with the physical components of the unit. This chapter describes the exterior and interior components and provides specifications for the FOM-7900B Fiber Optic System. CHAPTER 3 FÜM-7900B Mainframe Operation This chapter is a guide for front panel operation of the mainframe. CHAPTER 4 FOS-79800E Module This chapter is a guide for front panel operation of the source module. CHAPTER 5 DPM-79810 MODULE This chapter is a guide for front panel operation of the dual power meter module. CHAPTER 6 FÜS-79710 Module This chapter is a guide for front panel operation of the 1 x 4 switch module. CHAPTER 7 RS-232 Interface This chapter is an overview of the RS-232 interface. CHAPTER 8 GPIB Remote Operation and Common Commands This chapter is a guide to the syntax and usage of the various IEEE/488.2 common commands. It also includes hardware diagrams and other information relating to remote operation. CHAPTER 9 Command Reference This chapter is a guide to the syntax and usage of the various device-dependent commands for the FOM-7900B System. CHAPTER 10 Programming Examples This chapter provides FOM-7900B programming examples using GPIB commands. CHAPTER 11 Maintenance This chapter describes how to maintain the FOM-7900B System. CHAPTER 12 Error Messages This chapter provides information on error messages and warnings. CHAPTER 13 Troubleshooting This chapter is intended to be used as a guide when the FOM-7900B mainframe or modules do not perform as expected.