The PKZ connectors used with all RF TIMs up to 40 GHz are robust and support thousands of insertions when used properly. They may wear over time or may be damaged during cleaning or when used without a Diag/Cal block. Specifically, the center conductor could be bent or contaminated. Carefully inspect the PKZ connector with a microscope or magnifying device and look for contamination or bent ground pins.

WARNING: The ground tabs can also be damaged if the connector is being cleaned. See Cleaning PKZ Connectors for safe cleaning instructions.

WARNING: NEVER use a Female PKZ connector (PKZ adapter or cable) without the Diag/Cal plate with RF Block installed (see Figure 1). Inserting a PKZ connector directly into the TIM block without a Diag/Cal Block may cause connector damage. The RF Block and connector chamfered edge provides course and fine alignment to assure a perfectly vertical alignment.

How Does the PKZ Connector Work?
The Fixture and PKZ adapters/cables have 4 tabs around the center pin that are grounds. They push outward against the inside of the ground sleeve on the female (Fixture side) connector. (See Figure 1)
Note that the lower right tab particularly is pushed in. (See Figure 2) This results in a poor ground through the mating connector.

Tool Required:

• Magnification tool (microscope or magnifying glass, a jewelry loop works well).

To Inspect Male PKZ Connector on the TIM:

1. Rotate the Fixture Docking switch to Unlatch position and physically removing Fixture or Diag/Cal Interface plate from the testhead.
2. Carefully inspect the PKZ connectors with a microscope or magnifying device and look for contamination (see Figure 1 & 2) or bent ground pins.
3. If contamination is identified, refer to Cleaning PKZ Connectors for safe cleaning instructions.
4. Refer to the Diag/Cal plate diagram to identify any damaged RF TIM PKZ connector. Request an RMA from [email protected], including the Tester and TIM serial numbers.
5. If a damaged connector is found, carefully inspect all Fixture and Diag/Cal Interface plates and PKZ cables that may have come in contact with the connector.

Resolution: If a damaged connector is found, the connector and cable in the TIM must be replaced by sending it back to the factory for repair.

Figure 1: Contaminated PKZ #12 Connector Example


Figure 2: Clean PKZ #12 Connector Example


Figure 3: RF Block with 16 PKZ Connectors


Figure 4: Example RF Block Diagram

T-Location is the number below the center of the block
RI#### Model is the TIM Model number and Description
Instrument name is below the model number.

Figure 1: New Female PKZ Connector (TIM side)


Figure 2: Worn Female PKZ Connector (Fixture Side) Poor Ground (lower right tab)