Agilent Technologies e4419b Equipment, Procedure, 4 Power Reference Level Test Setup, + input

Performance Tests

Power Reference Level Test

Equipment

•Test power meter: Agilent 432A.

•Thermistor mount: Agilent 478A option H75 or H76.

•Digital voltmeter (DVM): Agilent 3458A.

Test Setup
Power Meter	Test Power Meter	Digital Voltmeter
	Power
	ref
	VRF	+ input
		-input
	Vcomp

Thermistor mount

Figure 2-4: Power Reference Level Test Setup

Procedure

Use the following procedure to perform the power reference level test:

Note	The procedure details the key presses required on the
	Agilent E4418B. For the Agilent E4419B the equivalent key presses
	should be performed on both channels.

1.Set the DVM to measure resistance:

Connect the DVM between the VRF connector on the rear panel of the Agilent 432A and pin 1 on the thermistor mount end of the sensor cable. Verify that no power is applied to the Agilent 432A.

2.Round off the DVM reading to two decimal places and note this value

as the internal bridge resistance (R) of the Agilent 432A (approximately 200 Ω).

•R ____________Ω

3.Connect the equipment as shown in Figure 2-4, ensuring that the DVM input leads are isolated from chassis ground.

Note	Ensure that the Agilent 432A and the power meter under test have
	been powered on for at least 30 minutes before moving to step 4.

Agilent E4418B/E4419B Service Guide 2-17