Keysight E4980A - Page 63

Keysight E4980A/E4980AL Precision LCR Meter 63
Troubleshooting
Function Specific Troubleshooting
Step 8. Use the softkeys to select the BIAS INTERFACE test.
Step 9. Press the EXECUTE - TEST START softkeys to execute the BIAS INTERFACE
test.
Step 10. Confirm the /RESET LED on the bias interface simulator turns ON.
Step 11. Confirm CS0 and CS1 LEDs on the simulator turns ON as the E4980A/
E4980AL’s output signal is displayed on the LCD (Refer to Figure 4-17).
Step 12. Confirm that ADRS1-ADRS6 LEDs on the simulator turn ON in accordance
with the hexadecimal number displayed on the LCD. One of the 6 LEDs turns
ON in sequence as shown in Figure 4-17.
Step 13. Confirm that DO0-DO7 LEDs on the simulator turn ON in accordance with the
hexadecimal number displayed on the LCD. One of the 8 LEDs turns ON in
sequence as shown in Figure 4-17.
Figure 4-17 Bias Current Interface Function Test
Step 14. Confirm that “DI0 TO 7” and “DI8 TO 15” on the LCD of the E4980A/ E4980AL
display hexadecimal number “ff”.
Softkey Function
INCR + Increments the test number of the Test Menu.
DECR - Decrements the test number of the Test Menu.
Check the settings of S1 and S2 described in the Step 1, if the
E4980A/E4980AL’s LCD displays “Illegal Test Setup”.
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