Agilent Technologies E4980A Service Manual page 54

Troubleshooting
Function Specific Troubleshooting
Figure 4-14 Bias Interface Simulator
Step 2. Set DC power supply output voltage +5 V. Connect TP2 (GND) on the bias interface
simulator to '-' terminal of the power supply. Then connect TP1 (Vcc) on the simulator to
'+' terminal of the power supply. (refer to Figure Figure 4-14 and Figure 4-15.)
NOTE DC power for the bias interface simulator can be supplied from the E4980A instead of
from an external DC power supply.
54 Chapter 4