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18 Installation Power Connection Caution: Connection of this supply to an ac power source should only be performed by an electrician or other qualified person. Before connecting the supply to the ac power source, check the label on the rear panel to ensure that the supply is set for the correct ac voltage to be used. If necessary, convert the line voltage to another by following the instructions under “Line Voltage Conversion”. Agilent Models 6010A, 6011A, 6012B and 6015A. To connect input power, to the instrument proceed as follows: a. Remove the AC filter assembly cover by unscrewing the four locating screws. b. Insert the power cord through the strain relief clamp located on the cover. c. Connect the wires to the terminal block in accordance with the prevailing color codes. Green or green/yellow to the terminal labeled " '' White or blue wire to the terminal labeled "N'' * Black or brown wire to the terminal labeled ''L" * In a 2-phase system, such as 208 in the USA, the second phase is connected to the "N'' terminal. WARNING: For proper protection by the instrument circuit breaker, the wire connected to the "L’’ terminal on the instrument must be connected to the "L’’ side of the line (hot); the wire connected to the ’’N" terminal must be connected to the "N" side of the line (neutral or common). To protect operating personnel, the wire connected to the " ’’ terminal must be connected to earth ground. In no event shall this instrument be operated without adequate ground connection. d. Replace the cover, tighten all four screws and tighten the strain relief clamp. (All four screws must be tightened for unit to meet RFI specifications.) e. Connect the other end of the power cord to an appropriate power source. Note: Connections to the ac power line must be made in accordance with applicable electrical codes. The international color code for identifying mains supply conductors is green/yellow, blue, and brown for earth, neutral, and line respectively. Corresponding USA/Canadian codes are green, white, and black. Caution: Before applying power to the instrument, check to see that the rear-panel circuit breaker CB1 is on. The breaker may trip due to rough handling during transit. If the breaker is found to be tripped at any other time for unknown reasons, refer to the troubleshooting procedures in the Service Manual. Agilent Models 6023A and 6028A. The power supply is shipped from the factory with a power-cord plug appropriate for the user’s location. Figure 2-2 illustrates the standard configuration of power-cord plugs used by Agilent Technologies. With each drawing is the Agilent Part Number for a replacement power cord equipped with a plug of that configuration. If a different power cord is required, contact the nearest Agilent Technologies Sales and Service office. To protect operating personnel, the National Electrical Manufacturers Association (NEMA) recommends that the instrument panel and cabinet be grounded. This supply is equipped with a three-conductor power cable; the third conductor is the ground conductor. When the cable is plugged into an appropriate receptacle the supply is grounded. In no event shall this supply be operated without an adequate cabinet ground connection. Installation 19 The offset pin on the standard power cable three-prong connector is the ground connection. If a two-contact receptacle is encountered, it must be replaced with a properly grounded three-contact receptacle in accordance with the National Electrical Code and any local codes and ordinances. The work should be done by a qualified electrician only. Note: To reduce noise pickup, it is good practice to keep the ac input lines separated from signal lines. Line Voltage Option Conversion Caution: Conversion to or from 100 V operation requires replacement of internal components and calibration in addition to the line voltage components, and is to be done only at the factory. Failure to configure and calibrate the power supply properly may result in damage to the unit. Agilent Models 6010A, 6011A, 6012B and 6015A. Line voltage conversion is accomplished by adjusting three components: a two-section line select switch, and a line-voltage jumper. To convert the supply from one line voltage option to another, proceed as follows: WARNING: Some components and circuits are at ac line voltage even with the LINE switch off. To avoid electric shock hazard, disconnect line cord and load, and wait two minutes before removing covers. a. Remove the outside cover by removing the four screws that hold the carrying straps, spread the bottom of the cover slightly and carefully slide the cover to the rear of the supply until it is clear. Next remove the top inside cover by removing the nine screws, four on top, three on right side, and two on left side, which connect the top inside cover to the supply chassis. b. Remove the FET board to reach the line-voltage jumper (W1) terminals. c. Use a small-blade screwdriver to set the two switch sect...

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