Frequency Response Above 3 GHz Adjustment

This adjustment procedure performs the following steps:

The instrument’s internal flatness corrections are turned off.

Amplitude error is measured as a function of frequency from 3 GHz to 6.7 GHz, 13.2 GHz, 26.5 GHz, 44 GHz, or 50 GHz depending on the model. The measured error is normalized to 50 MHz and the error is stored in the PSA memory as frequency/amplitude pairs. These error numbers are used by the PSA to correct out flatness errors. Flatness correction points are set at every 100 MHz from 3 GHz to 50 GHz. The PSA is band locked so corrections at the band edges can be measured without being in the wrong band.

The source power is adjusted at each frequency in order to keep the power constant into the power meter.

The related performance test for this adjustment is Frequency Response Above 3 GHz.

Special note for E4443A and E4445A instruments:

Since these instruments have max frequency limits that line up near the band breaks of the 26.5 GHz E4440A, it is necessary to gather a few correction points in the next higher band. This allows the instrument to tune a center screen signal at the instrument’s specified max frequency and still be able to sweep 400 MHz past the signal. For example, the 6.7 GHz E4443A will have correction values gathered from 6.2 GHz to 7.1 GHz in Band 2. This is not only necessary to sweep past a 6.7 MHz center screen signal, but also, Band 1 ends at 6.6 GHz, not 6.7 GHz.

This adjustment saves an output file which lists the corrections that were stored in the instrument. The output file is saved at this location:

<drive>:\Program Files (x86)\Agilent TME\PSA\Output\<Model_Serial#>

Required Test Equipment

Test Equipment	Model Number	E4440A E4443A E4445A	E4446A E4447A E4448A
Synthesized Sweeper	PSG Models (see equipment list)	X	X
Power Meter	N1914B	X	X
Power Sensor	N8485A	X
Power Sensor	N8487A		X
Power Splitter	11667B	X
Power Splitter	11667C		X
3.5 mm Cable	8120-4921	X
2.4 mm Cable	8120-6164		X
BNC Cable	8120-2582	X	X
Type-N (m) to 3.5 mm (m) adapter	1250-1743	X
Type-N (m) to 3.5 mm (f) adapter (2 required)	1250-1744	X
3.5 mm (f) to 3.5 mm (f) adapter	83059B	X
3.5 mm (f) to 2.4 mm (f) adapter	11901B	X
3.5 mm (f) to Type-N (m) (8485A adapter)	08485-60005	X
2.4 mm (f) to Type-N (m) (8487A adapter)	08487-60001		X

Frequency Response Above 3 GHz Adjustment

Special note for E4443A and E4445A instruments:

Required Test Equipment

Connection Setup

Power Meter Calibration (Channel A)

Frequency Response Adjustment Setup
(Bands 1 through 6)

Frequency Response Above 3 GHz Adjustment

Special note for E4443A and E4445A instruments:

Required Test Equipment

Connection Setup

Power Meter Calibration (Channel A)

Frequency Response Adjustment Setup(Bands 1 through 6)

Frequency Response Adjustment Setup
(Bands 1 through 6)