88 Chapter2
Adjustment Procedures
7. YTO Adjustment
Procedure
NOTE This adjustment cannot be performed if the spectrum analyzer
preselected external mixer mode is selected.
YTO Main Coil Adjustments
1. Press LINE to turn the spectrum analyzer off. Remove the spectrum
analyzer cover and fold down the A15 RF and A14 frequency control
assemblies.
2. Disconnect the 50 Ω termination from the 1ST LO OUTPUT.
Connect the equipment as shown in Figure 2-10 on page 87. Press
LINE to turn the spectrum analyzer on.
3. Move the jumper on A14J23 from the NORM position (pins 1 and 2
jumpered) to the TEST position (pins 2 and 3 jumpered).
4. If the HP 8560E/EC spectrum analyzer does not have Option 002,
press the following keys:
CONFIG, EXT MXR PRE UNPR, (UNPR)
AUX CTRL, EXTERNAL MIXER, LOCK HARMONIC, 6 Hz
SPAN, ZERO SPAN
FREQUENCY, CENTER FREQ, 18.8893 GHz, SGL SWP
SAVE, SAVE STATE, STATE 0
FREQUENCY, 35.7493 GHz
SAVE, SAVE STATE, STATE 1
RECALL, RECALL STATE, STATE 0.
5. If the HP 8560E/EC spectrum analyzer has Option 002, press the
following keys:
SPAN, ZERO SPAN
FREQUENCY, CENTER FREQ, 300 KHz
SAVE, SAVE STATE, STATE 0
FREQUENCY, 2.0993 GHz
SAVE, SAVE STATE, STATE 1
RECALL, RECALL STATE, STATE 0.
6. On the HP 5343A, press
SHIFT 7 and set the controls as follows:
SAMPLE RATE ........................................................ Fully Counterclockwise
10 Hz — 500 MHz/500 MHz — 26.5 GHz SWITCH ............ 500 MHz — 26.5 GHz
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