Anritsu MS2665C - Page 135

4-19
Procedure :
(1) Local sweep adjustment
Refer to 3.2.5.2 Procedure (1) Local sweep adjustment.
(2) YTO FM sweep adjustment
Refer to 3.2.5.2 Procedure (2) YTO FM sweep adjustment.
(3) YTF offset voltage adjustment 1
Refer to 3.2.5.2 Procedure (3) YTF offset voltage adjustment 1.
(4) YTF offset voltage adjustment 2
Refer to 3.2.5.2 Procedure (4) YTF offset voltage adjustment 2.
(5) YTF tuning DAC adjustment
Refer to 3.2.5.2 Procedure (5) YTF tuning DAC adjustment.
(6) YTF tuning adjustment
1) Keep key “Preset” depressed while Switching ON the spectrum analyzer.
2) Wait till sweep of the spectrum analyzer starts and after that Switch OFF the power supply of the spectrum
analyzer.
3) Now once again keep key “0” depressed while switching on the spectrum analyzer.
4) Initialize the spectrum analyzer (Press key “preset”, followed by Key “F1”).
5) Set the spectrum analyzer to :
Center frequency : 3.2 GHz
Span : 200 MHz
6) Set 6769B Signal generator output to :
Frequency : 3.2 GHz
RF level : -10 dBm
7) Enter Cal menu by pushing “Shift” + “0” keys. Open the second page of Cal menu (press the key “more”), and
enter Maintenance menu with “F6” key.
8) Select key “Mainte RF/Micro Conv” (F2), and press the key “more”.
9) Press the key “Main Swp→off” (F2). At this point YTF filter shape appears on the display of the spectrum
analyzer.
4.2 Troubleshooting