Agilent Technologies N5230A, Руководство по обслуживанию, Страница: 58 / 262

3-28 Service Guide N5230-90014
Tests and Adjustments PNA Series Microwave Network Analyzers
Performance Tests (Agilent N7840A Software Package) N5230A
Performance Tests (Agilent N7840A Software Package)
The Agilent N7840A software package verifies the electrical performance of your N5230A
microwave PNA. The software automatically configures your analyzer to execute the
performance tests. The N7840A software package is not included with the analyzer; it
must be ordered separately. The model numbers of the equipment used are specified under
“Required Service Test Equipment” on page 2-7 .
There are nine tests in the software package:
• Source Power Accuracy Test
• Source Maximum Power Output Test
• Source Power Linearity Test
• Frequency Accuracy Test
• Trace Noise Test
• Receiver Compression Test
• Noise Floor Test
• Calibration Coefficients Test
• Dynamic Accuracy Test
Source Power Accuracy Test
Function of the Test: To confirm the accuracy of the source output power of your network
analyzer over its full frequency range.
Specification Tested: Test Port Output–Power Level Accuracy
Equipment Used: A power meter, power sensors, and adapters.
Description of the Test:
1. The analyzer’s output power level is set to 0 dBm.
2. A power sensor is connected to Port 1.
3. The output power is measured at hundreds of CW frequencies across the analyzer’s
frequency range and the values compared to the setting of 0 dBm.
If the Analyzer Fails this Test:
• Perform the “Source Calibration Adjustment” on page 3-37 and repeat this test.
• If the analyzer still fails this test, troubleshoot the source section of the analyzer and
then repeat this test. Refer to “Checking the Source Group” on page 4-31 .