Output Attenuation Adjustment

This adjustment applies to the following models:

This alignment measures the relative attenuation provided by the output attenuator. The adjustment procedure measures the DUT's output power at each attenuator setting relative to the output power at the nominally 0 dB attenuation setting. The change in measured power determines the amount of attenuation supplied by each attenuator setting at the measurement frequency.

Required Test Equipment

Test Equipment

Recommended Models1

Spectrum analyzer

N9030A Option 5xx2

Attenuator, 6 dB Fixed

8493C Opt. 006

50 W terminator

  • 3 required

909D

Adapter, 3.5 mm (f) to 2.4 mm (f)

11901B

Cable, 3.5 mm (m) to 3.5 mm (m)3

  • 48 inch

8121-1221

Cable, BNC (m) to SMB (f)3

  • 2 required

8121-2063

100 MHz reference

M9300A
  1. Refer to the main Required Equipment table for a list of alternative models.
  2. Select any frequency option (503, 508, 526, 543, 544, 550)) that has a maximum frequency greater than or equal to the maximum frequency of the unit under test.
  3. The RF cable length must be within +/- 6 inches of the length of the cable used to connect the triggers of the source and signal analyzer.

Connections and Setup Procedures

Setup for Output Attenuation Adjustment