Operation; Performance Tests - Keysight Technologies 11590B Operating And Service Manual

Operation

Operating Instructions
Figure 2 shows the Keysight 11590B bias network connected in a typical measurement setup. Many other
applications are possible but not shown because the general method of setup and operation is the same.
The 11590B contains an in-line filter which will help prevent inductance related oscillations. However, to
eliminate the possibility of oscillation with bipolar transistors, it is recommended that the 11635A bias
decoupling network be used with the 11590B.
Figure 2 Typical Measurement Setup

Performance Tests

The procedures in this section tests the electrical performance of the 11590B using the specifications of
Table 1 as performance standards.
Test Record
Results of the performance tests may be tabulated on the Test Record at the end of the procedures.
Performance may be verified using either a vector or scalar network analyzer setup. Errors due to directivity,
source match, and return loss of the "opposite port" termination (and detector match in a scalar system) will
add uncertainties to your measurement. The most accurate method uses an error corrected instrument.
However, a scalar system will give acceptable results depending on the quality of the components.
The following general instructions apply to both vector and scalar network analyzers.
Return Loss Of Input and Output Ports (Port Match)
1. Connect the equipment for a standard reflection measurement.
2. Calibrate the system with the appropriate standards.
3. Connect the appropriate instrument port of the 11590B to the test port. Terminate the opposite port of
the 11590B with a 50 ohm load.
11590B Operating and Service Manual 5