Keysight ENA Series - Check the voltage output of the Control Lines

152 Keysight E5092A ENA Series Configurable Multiport Test Set
Troubleshooting
E5092A Setting Troubleshooting
3-
Step 5. Press E5092A, and then check that values on ADC1 and ADC2 are within the
following limits.
• If the voltage of ADC1 is not within the limit, the A1board or the heat sensor
is suspect.
• If the voltage of ADC2 is not within the limit, the A1 board or the heater is
suspect.
Check the voltage output of the Control Lines
Step 1. Turn on the E5092A.
Step 2. Measure the DC voltage between the pin 12 and 15 on the control lines using
a voltmeter with a small probe. Figure 3-5 shows the pin assignment of the
control lines.
Figure 3-5 Pin assignment of the control lines
Step 3. Rotate the voltage adjustment trimmer on the front panel. Check that the
trimmer can set the voltage from +2V to +5V.
• If the output voltage can not be varied from +2V to +5V though the A1
board works correctly, the A3 DUT control board is suspect.
• If the output voltage is good, the A3 board is verified.
The values on ADC1 and ADC2 are not measured continuously. The values
are measured when E5092A, ADC1, or ADC2 softkey is pressed.
Table 3-2 ADC Voltage
ADC Range
ADC1 + 2.0 to + 2.3 V
ADC2 + 1.5 to + 2.6 V