Click here to go back to Resource Selection 
3048A Phase Noise Test Set - Spurious Accuracy Check
HP 3048A Phase Noise - Spurious Accuracy Check - Configuration
The spurious accuracy check is described in the HP 3048A Calibration Manual. Description of the procedure starts page 13 of the PDF file available for download here.
Running the 3048 Phase Noise Measurement Program to Display the Configuration in use. A programmable Function Generator is added to the standard configuration, an HP3325A at address 717, as shown in the picture below.
| HP 3048 Phase Noise Measurement Program - Instrument Addresses |
 |
| HP 3048 Phase Noise Measurement Program - Choose Advanced Functions in the Main Menu |
 |
| HP 3048 Phase Noise Measurement Program - Choose Spurious Accuracy Test |
 |
| HP 3048 Phase Noise Measurement Program - Choose Perform Test |
 |
| HP 3048 Phase Noise Measurement Program - Program instruct the operator how to connect the instruments |
 |
HP 3048A Phase Noise - Spurious Accuracy Check
Running this test is fully automated with the 3325A included in the system address list. Measurement of calibrated spurious signals injected in the 11848A interface are made at 5.5 Hz, 55 Hz, 550 Hz, 5500 Hz, and 55 KHz. The resulting graph, for our own system, is displayed below.
| HP 3048 Phase Noise Measurement Program - Spurious Level Accuracy Display |
 |
HP 3048A Phase Noise - Spurious Accuracy Check
A table listing of the calibrated spurious signals, absolute value measured and possible deviation, can also be displayed using the second menu option.
| HP 3048 Phase Noise Measurement Program - Spurious Level Accuracy Test Results |
 |
| HP 3048 Phase Noise Measurement Program - Spurious Level Accuracy Test Results Listing |
 |
