IF Response Adjustment

This adjustment is required when upgrading. Adjustments are made to the IF amplitude, phase, and offsets.

Note: For phase adjustment, the U9391C 10 MHz to 26.5 GHz comb generator is recommended for best results instead of the higher frequency comb generator models.

When to perform

IF response adjustment is required when upgrading to Option 090, 093, or 094. In addition, this adjustment must be performed each time a new configuration is set up or if cables are changed.

Required Equipment

• Latest firmware

• For Broadband systems (Option 093):

• • Leave ports open

  • Connect a thru

• For Banded systems (Option 094):

• • Apply a short to the waveguide ports

• U9391x comb generator (phase adjustment only)

• U9391-60009 sine to square wave converter (phase adjustment only)

• +15 VDC power supply (phase adjustment only)

• USB cables (2) (phase adjustment only)

• RF cable

• Adapters as needed

Procedure

1. Click Utilities, then System, then Service, then Adjustments

2. At the Adjustments selection, click IF Response Adjustment.

3. Select the desired adjustments then click Begin.

4. Follow the instructions displayed in the program.

Data Storage

• The correction data is stored in the flash memory on the Test Set Mother Board.