Freq Resp 300 kHz to 3.6 GHz Preamp On Performance Test

This test applies to the following models with Preamplifier:

• EXA — N9010A/B/N
• MXA — N9020A/B
• MXA — N9021B
• PXA — N9030A/B
• UXA — N9040B
• UXA — N9041B

• NFA — N8973B/74B/75B/76B

Frequency response (aka. Flatness) is defined as the amplitude deviation from the reference amplitude at 50 MHz. The complete analyzer frequency response is measured with several tests.

The model and options of the DUT will determine which tests are run from the list below.

• Freq Resp 300 kHz to 3.6 GHz Preamp Off
• Freq Resp 300 kHz to 3.6 GHz Preamp On
• Freq Resp 300 kHz to 3.6 GHz AC Coupled
• Freq Resp 300 kHz to 3.6 GHz Option EA3
• Freq Resp 50 MHz to 3.6 GHz Preamp Off Input 2
• Freq Resp 50 MHz to 3.6 GHz Preamp On Input 2
• Freq Resp Above 3.6 GHz Preamp Off
• Freq Resp Above 3.6 GHz Preamp On
• Freq Resp Above 3.6 GHz Full Bypass Path
• Freq Resp 3.6 GHz to 50 GHz Preamp Off Input 2
• Freq Resp 3.6 GHz to 50 GHz Preamp On Input 2
• Freq Resp Unpreselected Preamp On
• Freq Resp Above 3.6 GHz Full Bypass Path
• Freq Resp 3.6 GHz to 50 GHz Full Bypass Input 2
• Freq Resp Below 300 kHz

A “buried power sensor” technique is used to characterize the tracking error of a power splitter in order to avoid the relatively large specified tracking error. This technique reduces the measurement uncertainty to verify the frequency-response specification for the 300 kHz to 3.6 GHz range. The buried sensor calibration is valid for four hours.

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Required Test Equipment

Connection Setups

Power Meter Calibration

Splitter Characterization

Freq Resp 300 kHz to 3.6 GHz Preamp On Test Setup