7. YTO Adjustment
Procedure
Note This adjustment cannot be performed if the analyzer preselected external mixer mode is selected.
YTO Main Coil Adjustments
1.Set the HP 8560A m switch off. Remove the analyzer cover and fold down the Al5 RF and Al4 Frequency Control assemblies.
2.Disconnect the 50R termination from the 1ST LO OUTPUT. Connect the equipment as shown in Figure
3.Move the jumper on A14523 from the NORM position (pins 1 and 2 jumpered) to the TEST position (pins 2 and 3 jumpered).
4.On the HP 8560A, press the following keys:
(CONFIG) EXT MXR UMPR
w ZERO SPAN
(FREQUENCY) CENTER FREQ 18.8893 (GHz) (WSWP), then press
ISAVE) SAVE LOCK OFF SAVE STATE STATE 0. Press[m)35.7493(GHz (SAVE) SAVE STATE STATE 1 , then press (m) RECALL STATE STATE 0.
5.On the HP 5343A, press (SHIFT) 7 and set the controls as follows:
SAMPLE RATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully Counterclockwise
10
6.Adjust A14R93 3.2 GHz for the appropriate frequency counter reading of 3.200 GHz fl MHz.
7.On the HP 8560A, press STATE 1.
8.Adjust A14R42 6.01 GHz for a frequency counter reading of 6.010 GHz fl MHz.
9.On the HP 8560A, press STATE 0.
10.Repeat steps 6 through 9 until both of these interacting adjustments meet their tolerances.
11.Place the jumper on A14523 in the NORM position (pins 1 and 2 jumpered).
12.Disconnect the SMA cable from the 1ST LO OUTPUT jack and reconnect the 500 termination on the 1ST LO OUTPUT.