Anritsu Spectrum Master MS2711D Maintenance Manual page 24

Bias Tee Test
5. Press the System Options key, then select the Application Options soft key and the Bias Tee soft
key.
6. Select the Bias Tee Voltage soft key and enter 12 then press the Enter key.
7. Connect the 105 Ohm load to the RF In test port.
8. Press the Bias Tee On/Off soft key to turn the Bias Tee On.
9. Verify the voltage and current readings displayed on the top left side of the screen are within the
specifications shown in Table 10.
10. Press the Bias Tee On/Off soft key to turn the Bias Tee Off
11. Select each of the voltage settings and verify the voltage and current readings displayed on the
top left side of the screen are within the specifications shown in Table 10.
Table 10. Bias Tee Verification, 105 Ohm Load, Low Current
Voltage Setting (V)
12
15
18
21
24
Fault Test
12. Disconnect the 105 Ohm load and connect the 40 Ohm load to the RF In port.
13. Select the Bias Tee Voltage soft key and enter 17 then press the Enter key.
14. Press the Bias Tee On/Off soft key to turn the Bias Tee On.
15. Verify that the instrument makes a clicking sound and the Bias Tee Error/Fault dialog appears
on the screen.
16. Press the Bias Tee On/Off soft key to turn the Bias Tee Off.
20
Voltage Specification (V)
± 0.5
± 0.6
± 0.7
± 0.8
± 1.0
Current Specification (mA)
85-145
113-173
142-202
172-230
199-259
Spectrum Master MM