downprogramming. This is done to present the worst possible conditions for programming in each direction. A method for measuring the programming speed of an Agilent power supply is as follows:
Figure 77. CV Programming Speed Test Setup
1.Restrap the power supply rear barrier strip for remote resistance programming, constant voltage. The strapping pattern for remote resistance programming of
2.Disconnect the output capacitor. On most Agilent supplies the output capacitor can be disconnected by simply removing the appropriate straps on the rear barrier strip as illustrated in the Operating and Service Manual. A minimum amount of output capacitance is permanently wired to the output and should not be removed to increase the programming speed, because the supply could oscillate under certain load conditions. The programming speed increases by a factor of from 10 to 100 when the output capacitor is removed.
3.Select the value of the programming resistor that will produce maximum output voltage of the supply. This value is obtained by multiplying the programming coefficient ("X" ohms/volts) by the maximum rated output voltage of the supply. The programming coefficient is included on both the data sheet and the Operating and Service Manual for each model.
4.For supplies with programming speeds of less than 8 milliseconds, a
Figure 78 illustrates the programming speed relationship between the remote programming control input (RP)
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