Agilent Technologies E1401-90493

138 Chapter 2

Performance Verification Tests

18. Absolute Amplitude Accuracy (Reference Settings): Agilent E4402B, E4403B, E4404B,

E4405B, E4407B, and E4408B

Tracking Error = Channel A Power − Channel B Power

For example, if Channel A Power is −14.07 dBm and Channel B

power is +6.23 dBm, the splitter tracking error is −20.30 dB.

Tracking Error: _______ dB

10.Proceed to Part 2: Absolute Amplitude Accuracy, Preamp Off.

Part 2. Absolute Amplitude Accuracy, Preamp Off

Figure 2-20 Absolute Amplitude Accuracy Test Setup

1. On the synthesized signal generator set the controls as follows:

FREQUENCY, 50 MHz

AMPLITUDE, +6 dBm

RF ON

AM OFF

FM OFF

2. Press Preset on the analyzer. (Press the Factory Preset softkey, if it is

displayed.)

3. Use a BNC cable and adapter to connect the AMPTD REF OUT to the

INPUT 50Ω.

4. Press System, Alignments, Align Now, All. Wait for the auto alignment

to finish. Press System, Alignments, Auto Align, Off.

5. Refer to Figure 2-20. Disconnect the reference sensor from the fixed

attenuator. Connect the fixed attenuator to the input of the analyzer

using an adapter. Do not use a cable.