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28 Installation FIRE HAZARD. Make sure the replacement fuse is one of the same type (size) and rating (amps) that is consistent with the voltage level you are operating at. Do not use a substitute fuse; use a fuse with the same Agilent Part number listed in Table 2-2. 6. Close the door of the line module and insert the power cord in the ac input socket. Your power supply is now configured to operate at the voltage you selected. GP-IB Interface Connector The GP-IB connector on the rear panel connects your power supply to your computer and other GP-IB devices (see Figure 2-2). Accessories (page 12) in Chapter 1 lists the cables and cable accessories that are available from Agilent Technologies. An GP-IB system can be connected together in any configuration (star, linear, or both) as long as the following rules are observed 1. The total number of devices, including the computer, is no more than 15. 2. The total length of all the cables used is no more than two meters times the number of devices connected together, up to a maximum of 20 meters. Note IEEE Std. 488-1978 states that you should exercise caution if your individual cable lengths exceed 4 m. Do not stack more than three connector blocks together on any GP-IB connector. The resultant leverage can exert excessive force on the mounting panels. Make sure that all connectors are fully seated and that the lock screws are firmly finger tightened. Do not use a screwdriver. Use a screwdriver only for the removal of the screws. Installation 29 Getting Started Introduction This chapter is intended for the first time user of the supply. It provides four main discussions: · Front Panel Controls and Indicators · Turning on Your Supply · Checking Out Your Supply Using Local Control · Introduction to Remote Operation First, the supply’s front panel controls and indicators are briefly described. Some of the controls and indicators will be used in the Turn On And Checkout procedures that follow. Chapter 6 describes how to use all of the front panel controls. Successful completion of the Turn On And Checkout procedures ensures with a high level of confidence that your supply is operating properly. Complete performance testing and troubleshooting procedures are given in the Service Manual (Agilent Part No. 06626-90003). The checkout procedures are performed locally from the front panel. In addition to checking the operation of your supply, these simple step-by-step checkout procedures will help the first time user become familiar with operating the supply from the front panel. When you have completed the checkout procedures, you are then introduced to the fundamentals of operating the supply remotely from a computer. You will learn how to send a command to the supply from the computer and how to get data back to the computer from the power supply. A few of the most often used power supply commands will be described to help you get started and become familiar with the basics of programming your supply. After completing this chapter, you can proceed to Chapter 4 to find out how to make load connections to your supply’s outputs and then to Chapter 5 (Remote Control) and/or Chapter 6 (Local Control) to learn all the details about operating your supply. Front Panel Controls and Indicators The power supply’s controls and indicators are shown in Figure 3-1 and are described in Table 3-1. Note that the front panel controls are identical for all models except for the number of OUTPUT annunciators (number 3 in Figure 3-1). Getting Started 31 3 3 5 1 6 7 8 SYSTEM OUTPUT ENTRY LINE ON OFF LCL ADDR ERR STO RCL RANGE V/I OVSET RESET OCP VOLT VOLT CURR CURR OUTPUT SELECT VSET ISET OUTPUT ON/OFF ENTER 7 8 9 4 5 6 1 2 3 0 . VOLTS AMPS 6626A SYSTEM DC POWER SUPPLY 1 2 3 4 CV CC UNR OCP ERR RMT ADDR SRQ ENBLD-- OUTPUT -- 45.153 14.235m 9 4 2 Figure 3-1. Agilent 6626A Front Panel Table 3-1. Controls and Indicators Number Controls/Indicators Description Page 1 LCL key Returns power supply to local mode (unless local lockout has been received via GP-IB). Also, turns the power supply’s display on if it was turned off via the GP-IB. 3-13, 5-2, 6-1 2 GP-IB Status Annunciators (These three annunciators indicate the GP-IB status of the power supply). RMT - Indicates that the power supply is operating under remote control (GP-IB) ADDR - Indicates that the power supply is addressed to talk or to listen. SRQ - Indicates that the power supply is requesting service. 3-13, 5-2, 6-1, 3-10, 5-1 5-1, 5-2, 5-3, 5-17 3 OUTPUT Annunciators Indicate which output channel has been selected for front panel control and/or display (Only one output annunciator can be on at a time.) 3-7, 3-8, 6-1--6-4 4 Power Supply Status Annunciators (These five annunciators indicate the status of the power supply). CV - Indicates that the selected output channel is in the constant voltage mode. CC - Indicates that the selected output channel is in the positive constant current mode ( + CC) or the negative current limit ( -CC) mode...

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