Adjacent Channel Power

M9484C

Adjacent Channel Power Ratio (ACPR) is the ratio of the power in a specified bandwidth within an adjacent, offset channel to the average power level in the main channel.

Alternate Channel Leakage Ratio (ACLR) is the ratio of the power in a specified bandwidth within a channel that is two offsets away from the main channel to the average power level in the main channel.

For this test, the DUT generates the appropriate digital waveforms. Then the ACPR and ACLR are measured directly with a spectrum analyzer.

Required Test Equipment

Test Equipment

Recommended Model Number

Alternate Model Number

Signal analyzer

Note the following:

M9484C signal generators with frequency option 554 can only use the N9041B.

All other frequency options can use any of the recommended or alternate models providing that the frequency option is ≥ the maximum frequency of the DUT.

N9041B with options:

Frequency option for Input 2:

590, 90 GHz
or
5CX, 110 GHz

Other options:

  • N9085EM0E — 5G NR measurement application

 

N9040B
N9030B

With options:

  • 5xx frequency option. Select any frequency option that has a maximum frequency ≥ the maximum frequency of the DUT.

  • N9085EM0E — 5G NR measurement application

Connection Setups

For M9484C frequency options < 554

Note that RF Input 1 is used on the signal analyzer.

For M9484C frequency option 554

Note that RF Input 2 is used on the signal analyzer.