HP 8568B manual Second if Amplifier and Third Converter Adjustment

16. Second IF Amplifier and Third Converter Adjustment

See Figure 3-65 for the typical response when the bandpass filter is properly adjusted.

14.On the scalar network analyzer, press @CEEQ MAX. Press cursor A, ON and set the cursor to the -3 dB point on the low side of the filter response (ho.1 dB).

15.Press cursor A and set the cursor to the -3 dB point on the high side on the filter response. The cursor A should read 0 fO.l dB.

A19 2ND	A20 3RD
I F A M P L I F I E R	C O N V E R T E R
\	/

A19

Ll

A M P T D

A20

Figure 3-64.

Location of 301.4 MHz BPF and 280 MHz AMPTD Adjustments

Figure 3-65.

301.4MHz Bandpass Filter Adjustment Waveform

16.On the synthesized sweeper, press IIv13) and set the Marker to the -3 dB point on the low side of the filter response.

17.On the synthesized sweeper, press (M4) and set the Marker to the -3 dB point on the high side of the filter response.

3-114 Adjustments