Linearity Low Power Range Test

This test applies to the following models:

This test measures the relative linearity error of the power sensor module. All measurements are performed at 50 MHz. The reference power level is shown in the table below.

Sensor Model (All Options)

Reference Power Level

–5 dBm to 20 dBm

0 dBm

20 dBm to 30 dBm

19 dBm

 

 

 

 

This test uses a PSG source 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

Test Equipment

Recommended Model Number

Option 504

Option 518

Option 526

Option 550

Signal Generator

E8257D Option 1EU (or 1EA) and 532, 540, 550, or 567

X

X

X

X

Power Supply

E3632A

X

X

X

X

Power Meter

N1914A1

X

X

X

X

Power Sensor, Type-N, 18 GHz

N8481A

 

X

 

 

Power Sensor, Type-N, 6 GHz

N8482A

X

 

 

 

Power Sensor, 3.5 mm, 26.5 GHz

N8485A

 

 

X

 

Power Sensor, 2.4 mm, 50 GHz

N8487A

 

 

 

X

3 dB Fixed Attenuator

8491A Option 003

X

X

X

X

6 dB Fixed Attenuator
(3 required)

8491A Option 006

X

X

X

X

1 dB Step Attenuator

8494G

X

X

X

X

10 dB Step Attenuator

8496G

X

X

X

X

Attenuator/Switch Driver

11713B

X

X

X

X

Directional Bridge

86205A

X

X

X

X

Amplifier

Mini Circuit
ZHL-1-2W-N

X

X

X

X

Filter, 50 MHz

RLC Electronics
BPF-750-50-10-5-N

X

X

X

X

50W Termination, 3.5 mm

902D

X

X

X

 

50W Termination, 2.4 mm

901D

 

 

 

X

Type-N cable
(2 required)

11500C

X

X

X

X

Adapter, 3.5 mm (f) to Type-N (m)
(2 required)

1250-1744

 

 

X

 

Adapter, 2.4 mm (f) to Type-N (f)

11903B

 

 

 

X

Adapter, 3.5 mm (f) to Type-N (m)2

08485-60005

 

 

X

 

Adapter, 2.4 mm (f) to Type-N (m)2

08487-60001

 

 

 

X
  1. The N1914A power meter requires minimum firmware version A.01.15 or above to fix a power linearity accuracy issue.

  2. Adapter intended for use only at 1 mW, 50 MHz power reference of the power meter.

Connection Setups

Standard Power Sensor and UUT Calibration

Linearity Low Power Range Test Setup

Power Settling Timer