Linearity

This test measures the relative linearity error of the power sensor. All measurements are performed at 50 MHz. The reference power levels for linearity measurement are listed by UUT model series in the table below.

Reference Power Levels

Click on the model link for a list of UUT models in that power sensor series.

UUT Model Series	N8480A N8480A N8481A N8482A N8485A N8487A N8488A N8486AR N8486AQ	E9304A E9304A E9304A Opt. H18	8480A 8480A 8481A 8482A 8485A 8487A	8485D	N8480B N8480B N8481B N8482B	N8480H N8480H N8481H N8482H
Power Level	0 dBm	0 dBm	9 dBm	–31 dBm	30 dBm	18 dBm

This test uses a PSG source and/or attenuators to create power levels that are “deltas” from the reference level. Each delta is measured by the reference power sensor and the UUT. The power measurements made by the reference power sensor are limited to the nominal range around –14 dBm to –3 dBm where the reference power sensor is very linear and the measurement is very repeatable.

Required Test Equipment

^[1] Supported power sensor options:

• N8480 Series: STD or CFT
• N8485A: STD or CFT and/or 033
• 8485A: Standard Option or 033
  

Power Meter and Power Sensor Calibration (Channel A)

For UUT N8480A and 8480A, except N8487A, N8486AR, and N8486AQ:

For UUT 8485D:

For UUT E9304A, E9304A Opt H18, N8487A, N8488A, N8480B, and N8480H:

For UUT N8486AR and N8486AQ:

Power Meter and Power Sensor Calibration (Channel B)

For UUT N8480A and 8480A, except N8487A, N8486AR, and N8486AQ:

For UUT 8485D, E9304A, E9304A Opt H18, N8487A, N8488A, N8480B, and N8480H:

For UUT N8486AR and N8486AQ:

Linearity Test Setup

For all UUT, except N8480H, 8485D, E9304A, and E9304A Opt H18:

For UUT 8485D, E9304A, and E9304A Opt H18:

For UUT N8480H:

Step 1:

Step 2:

Standard Power Sensor Power Settling Timer