Agilent Technologies 5962-8200 service manual Constant Current CC Tests, CC Setup

Verification and Performance Tests - 2

tttt

Loading Transient

vt

t v

Unloading

Transient

Figure 2-2. Transient Waveform

a.Turn off the supply and connect the output as in Figure 2-1a with the oscilloscope across the +S and -S terminals.

b.Turn on the supply and program the output current to the maximum programmable value (Imax) and the voltage to the full-scale value in Table 2-2.

c.Set the load to the Constant Current mode and program the load current to 1/2 the power supply full-scale rated current.

d.Set the electronic load's transient generator frequency to 100 Hz and its duty cycle to 50%.

e.Program the load's transient current level to the supply's full-scale current value and turn the transient generator on.

f.Adjust the oscilloscope for a waveform similar to that in Figure 2-2.

g.The output voltage should return to within the specified voltage (v) in less than 100uS (t). Check both loading and unloading transients by triggering on the positive and negative slope. Record the voltage at time “t” in the performance test record card under CV Transient Response.

Constant Current (CC) Tests

CC Setup

Follow the general setup instructions in the Measurement Techniques paragraph and the specific instructions given in the following paragraphs.

Current Programming and Readback Accuracy

This test verifies that the current programming and readback are within specification.

a.Turn off the supply and connect the current monitoring resistor across the power supply output and the DVM across the resistor. See "Current Monitoring Resistor" for connection information.

b.Turn on the supply and program the output voltage to 5 V and the current to zero amps. The power supply’s current detector must be set to DC and the programming language mode to SCPI. See the specifications for high range current readback in the User’s Guide if operating with the detector in ACDC or the language in Compatibility mode.

17