This test measures the absolute amplitude of the PSA at 50 MHz in narrow and Wideband IF paths. A synthesized signal source and two precision attenuators are used as the signal source to the analyzer. A power meter is used to measure a reference power level from the signal source. The precision attenuators are switched to provide a series of signal power levels below the reference power. The step attenuator loss is characterized, so the PSA input power can be calculated from the reference power and the attenuator step change. Fixed attenuators are placed on either side of the step attenuators to stabilize the match between the step attenuators, the signal generator, and the PSA. Also, the combined attenuation of the 10 dB and 1 dB precision attenuators is never set below 5 dB in order to maintain a good match between the two fixed attenuators.
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Test Equipment |
Model Number |
|---|---|
|
Signal Source |
PSG Models |
|
Power Meter |
N1914B |
|
Power Sensor |
N8482A |
|
6 dB Attenuator |
8491A Option 006, H33 |
|
10 dB Attenuator |
8491A Option 010, H33 |
|
10 dB Step Attenuator |
8496G Option 001, H50 |
|
1 dB Step Attenuator |
8494G Option 001, H50 |
|
Attenuator Driver |
11713E |
|
Attenuator Interconnect Kit |
11716A |
|
Type-N Cable (2 required) |
11500C |
|
BNC Cable |
8120-2582 |
|
Type-N (f) to Type-N (f) adapter |
1250-1472 |
|
Type-N (f) to 3.5 mm (f) adapter |
1250-1745 |
|
2.4 mm (f) to Type-N (f) adapter |
11903B |
