Setting up the DC Bias Option

---

The DC Bias Tee, Option 300 - DC Bias, provides power from the Agilent E7495B to the amplifier at the top of a base station tower, or the end of the cable run. The DC voltage (12 volts) is output on the center conductor of Port 1, RF Out. The option enables you to test with the amplifier powered on. DC bias defaults to off when you select a new measurement type which does not depend on either Port 1 or Port 2, and it must be turned on each time you want to use it. It stays on as long as you're using measurements that use RF In or Out. DC Bias cannot be saved in the On position as a state and is turned off when the power is cycled, including when going into the sleep state. If you do not have the option, it is grayed out on the screen.

---

NOTE:

The maximum current draw is 800 milliamps.

---

	Step	Notes
1	System
2	[Fr/Time Ref Location]
3	[DC Out] [On]	Each time you press this softkey, the selected option changes.

---

WARNING:

If you have tripped the RPP or are over the current limit for the DC bias, a warning screen appears. However, if you have shorted the output, the short may not be detected, and the test set will shut off current to the DC Bias port.

---