Chapter 2-Vector Network Analyzer Verification; Introduction; Frequency Accuracy - Anritsu S412E Maintenance Manual

Chapter 2 — Vector Network Analyzer
Verification
2-1

Introduction

This chapter provides the performance verification procedure for the vector network analyzer section of S412E.
The vector network analyzer performance verification tests consist of the following:
• "Frequency Accuracy" on page 2-1
• "Transmission Dynamic Range" on page 2-2
• "Return Loss Measurement Accuracy Verification" on page 2-3
2-2

Frequency Accuracy

The following test can be used to verify the CW frequency accuracy of the vector network analyzer of the
S412E. Measurement calibration is not required for this test.
Equipment Required
• Frequency Counter, Anritsu Model MF2412C
• 10 MHz Time Base Reference
• RF Coaxial Cable, Anritsu Model 15NN50-1.5C
• BNC male to BNC male Cable, Anritsu Model 2000-1627-R
Procedure
1. Connect a BNC cable between the output connector of the external Time Base Reference to the
Reference Input connector of the Frequency Counter.
2. Power on the Frequency Counter.
3. Power on the S412E and put it into Vector Network Analyzer mode using the Menu button.
4. Preset the S412E by pressing the Shift key, then the Preset (1) key, and then the Preset button.
Note Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
5. Press the Freq/Dist main menu and set the Start Freq to 1.0 GHz and the Stop Freq to 1.0 GHz.
6. Connect the RF cable between the VNA Port 1 connector of the S412E and the RF Input 1 connector of the
Frequency Counter.
7. On the Frequency Counter, press the Preset key.
8. Record the measured value to
S412E MM
Table A-1, "VNA Frequency Accuracy" on page
PN: 10580-00324 Rev. N
A-2.
2-1