Figure 2-19 . Demodulator Adjustment Locations - HP 8560E Service Manual

6. On the HP 8560E/EC, press
7. On the HP 8560E/EC press:
8. Set the HP 8640B FM to INT.
9. A 1 kHz sine wave should be observed on the oscilloscope. Rotate the
10.Adjust A4C707 FM DEMOD for a maximum peak-to-peak response
11.Press
Figure 2-19 Demodulator Adjustment Locations
Chapter 2
Center frequency .............. ....................................... 100 MHz
Span .................. ........................................................... 5 MHz
Ref level .............. ..................................................... −10 dBm
Resolution BW ................ .......................................... 100 kHz
,
CF SPAN ZERO SPAN AUX CTRL
(ON) ,
CAL IF ADJ ON OFF
Set the volume control to midrange.
volume knob on the front panel of the spectrum analyzer until the
amplitude of the 1 kHz signal is at about 150 mV (3 divisions on the
oscilloscope).
on the oscilloscope.
to turn the spectrum analyzer off. Disconnect the test
LINE
cable from A4C723.
13. Demodulator Adjustment
and set the controls as follows:
PRESET
MARKER →
,
PEAK SEARCH
,
AM/FM DEMOD
(OFF) , and
TRIG SWEEP CONT SGL
Adjustment Procedures
,
FM DEMOD ON OFF
(SGL).
107