102 Chapter 3
PSA Functional Tests
Amplitude Accuracy at 50 MHz
PSA Functional Tests
Amplitude Accuracy at 50 MHz
Test Limits
Amplitude Accuracy should remain within ±1.0 dB of the measured source value across the
range of source levels and changes in resolution bandwidth. Option 1DS (preamp option)
should remain within ±1.3 dB of measured values.
Test Description
A synthesized sweeper is used as the signal source for the test. The source amplitude is
varied using the signal source amplitude control. The resolution bandwidth is also varied
on the spectrum analyzer. The source amplitude is measured by the power meter and
spectrum analyzer at each setting, and the values compared. The difference between each
pair of measurements indicates the amplitude accuracy.
Item Critical Specifications Recommended
Agilent Model
Adapter Type-N(m), to 3.5 mm(m) 1250-1743
Adapter 3.5 mm(f) to 3.5 mm(f) 5061-5311
Attenuator, 20 dB Accuracy: < 0.5 dB 8491A
Cable APC 3.5 mm, 1 meter 8120-4921
Power Meter Compatible with power sensor E4418B
Power Se nsor Amplitude Range: −25 dBm to 10 dBm 8485A
Power Splitter 3.5 mm
6 dB loss 11667B
Synthesized
Sweeper Typical Temperature Stability: 0.01 dBc/°C 83630B