The test is performed at center frequencies of 50 MHz, 2 GHz and 7.6 GHz (excluding E4443A). The E444xA Reference Level is set to +10 dBm, the RBW is set to 30 kHz, and the tone spacing is 3 MHz. The E444xA input attenuator is set to 6 dB to provide acceptable input VSWR and yet to allow sufficient signal level at the input mixer without the need of an external amplifier. An input signal is set so that the mixer power is appropriate for the specification.
The signal amplitude is measured and a second tone is applied to bring the DUT into compression. The resulting amplitude drop of the first tone is measured. If the amplitude drop is greater than 1 dB the test result is "Fail". A directional coupler or bridge is used to combine the tones and provide sufficient source isolation.
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|
Test Equipment |
Model Number |
E4440A |
E4446A |
|---|---|---|---|
|
Synthesized Sweeper |
PSG Models |
X |
X |
|
Power Meter |
N1914B |
X |
X |
|
Power Sensor |
N8481A |
X |
X |
|
Directional Coupler |
87300B |
X |
X |
|
86205A |
X |
X |
|
|
3.5 mm Cable (2 required) |
8120-4921 |
X |
X |
|
BNC Cable |
8120-2582 |
X |
X |
|
2.4 mm (f) to 3.5 mm (f) adapter |
11901B |
X |
X |
|
3.5 mm (f) to 3.5 mm (f) adapter |
83059B |
X |
X |
|
Type-N (m) to Type-N (m) adapter |
1250-1475 |
X |
|
|
Type-N (f) to 3.5 mm (m) adapter |
1250-1750 |
X |
|
|
Type-N (m) to 3.5 mm (f) adapter |
1250-1744 |
X |
|
|
Type-N (m) to 2.4 mm (f) adapter |
11903D |
|
X |
|
BNC Tee |
1250-0781 |
X |
X |
