Datasheet

3.6 START UP / SHUT DOWN PROCEDURE

1. Increase V

12V_IN

from 0V to 10Vdc.

2. Vary LOAD1 from 0 – 10Adc

3. Vary V

12V_IN

from 10Vdc to 14Vdc

4. Decrease LOAD1 to 0A.

3.7 CONTROL LOOP GAIN & PHASE MEASUREMENT PROCEDURE

1. Connect 1kHz – 1MHz Isolation Transformer to TP2 and TP3 as show in Figure 4

2. Connect Input Signal Amplitude Measurement Probe (Channel A) to TP2 as shown in Figure 4

3. Connect Output Signal Amplitude Measurement Probe (Channel B) to TP3 as shown in Figure 4

4. Connect Ground Lead of Channel A and Channel B to TP 4 as shown in Figure 4

5. Inject 25mV or less signal across R7 through Isolation Transformer

6. Sweep Frequency from 1kHz to 1MHz with 10Hz or lower post filter

7. Control Loop Gain can be measured by

⎟

⎠

⎞

⎜

⎝

⎛

ChannelA

ChannelB

LOG20

8. Control Loop Phase is measured by the Phase difference between Channel A and Channel B

9. Disconnect Isolation Transformer from TP2 and TP3 before making other measurements (Signal

Injection into Feedback may interfere with accuracy of other measurements)

3.8 EQUIPMENT SHUTDOWN

1. Shut Down Oscilloscope

2. Shut down LOAD1

3. Shut down V

12V_IN

4. Shut down FAN