Keysight 8710 Series, Operating And Service Manual

Page: 32 / 35

4 Installation and Verification
32 Keysight 8710x Operating and Service Manual
Quick check procedure
1 Connect the common port of the switch to Port 1 of the network analyzer and one of the outer
RF ports to Port 2 of the network analyzer as illustrated in Figure 4-1 .
2 For standard drive, apply ground to the corresponding “drive” pin to close the selected path.
Refer to “Standard Drive” on page 17.
3 For TTL drive (option T24), apply “High” to the corresponding “drive” pin to close the selected
path. Refer to “TTL Drive (Option T24)” on page 18.
4 Perform the S-parameter measurement and verify against “Supplemental specifications (cold
switching)” on page 22.
5 Repeat steps 1 to 4 until all paths are measured and verified.
Performance test
The coaxial multiport switches can be tested to the accuracy of the specifications with a network
analyzer or equivalent equipment of suitable accuracy. If a network analyzer is available, test the
instrument using the procedure in the analyzer’s operating manual.
Service instructions
Adjustment and repair
N1923/4A low PIM coaxial multiport switches do not require internal adjustments and are not
recommended for repair.
Maintenance
The connectors, particularly the connector faces, must be kept clean. For instructions on
connecting and care of your connectors, refer to the Microwave Connector Care Quick Reference
Card (08510-90360).
NOTE
If any of the low PIM coaxial multiport switches fails within the warranty period, a new unit will be
replaced. Refer to “Replacement units” on page 33 for more details.