Agilent Technologies 6683A Programming The Tests General Considerations, Programming Parameters

Programming The Tests

General Considerations

Procedures are given for programming these tests either from the front panel keypad or from a GPIB controller. The procedures assume you know how to use the front panel keypad or how to program over the GPIB (see the Power Supply Operating Manual for more information). When using computer-controlled tests, you may have to consider the relatively slow (compared to computer and system voltmeters) settling times and slew rates of the power supply. Suitable WAIT statements can be inserted into the test program to give the power supply time to respond to the test commands.

This power supply can provide more than 240VA at more than 2 volts. If the output connections touch each other, severe arcing can occur resulting in burns, ignition or welding of parts. DO NOT ATTEMPT

TO MAKE CONNECTIONS WHILE OUTPUT POWER IS ON. These connections should be performed only by qualified electronics personnel.

Programming Parameters

Table 2-2 lists the programming voltage and current values for each model. You can enter these values either from the front panel or from a controller over the GPIB.

Table 2-2. Programming Voltage and Current Values

Agilent Model	Full Scale	Max. Prog.	Full Scale	Max. Prog.	Max. Prog.
Agilent 6680A	Voltage	Voltage	Current	Current	Overvoltage
	5V	5.125V	875A	895A	6.25V
Agilent 6681A	8V	8.190V	580A	592A	10.0V
Agilent 6682A	21V	21.50V	240A	246A	25.2V
Agilent 6683A	32V	32.75V	160A	164A	38.4V
Agilent 6684A	40V	41.00V	128A	131A	48.0V

General Measurement Techniques

Figure 2-1 shows the setup for the Constant Voltage tests. Measure the dc output voltage directly at the sense (+S and -S) terminals. Connect these terminals for remote sensing (to the +S and -S terminals). Connect these terminals for local sensing. Be certain to use load leads of sufficient wire gauge to carry the output current (see Chapter 4 of the Power Supply Operating Manual). To avoid noise pickup, use coaxial cable or shielded pairs for the test leads. If you use more than one meter or a meter and an oscilloscope, connect separate leads for each instrument to avoid mutual-coupling effects.

Performance Test Record Sheets

When performing the tests in this chapter, refer to the Performance Test Record sheets supplied at the end of this chapter. Table 2-6 is for recording common information, such as, the test equipment used and the environmental conditions. Tables 2-7 through 2-11 are dedicated to specific models. Each sheet lists the acceptable test ranges for the model and provides a place to record the results of the test.

Note	It is recommended that before you perform the tests in either Table 2-4 or Table 2-5, that you first locate
	the appropriate Performance Test Record sheet from Tables 2-7 through Table 2-11 for your specific
	model. Make a copy of this sheet, and record the actual observed values in it while performing the tests.
	Use the sheets in Tables 2-7 through Table 2-11 as master reference sheets to run copies at any time.

Verification 13