610 Chapter13
Softkey Descriptions
Softkey Descriptions
X FINE TUNE DAC Extra-Fine Tune DAC
DESCRIPTION Displays the output of the YTO extra-fine-tune DAC,
FM_TUNE, on the A7 analog interface assembly.
The lower four divisions of the screen represent a 0 to
−10 V output range. Midscreen represents 0 V and
bottom-screen represents −10 V. The DAC voltage level
is displayed as a horizontal line within the four
divisions.
Refer to Chapter 6 for additional LO troubleshooting
information.
R
ELATED SOFTKEYS COARSE TUNE DAC
FINE TUNE DAC
DACS
YTF DRIVER YTF Driver
DESCRIPTION Note that this function is available for 8592L, 8593E,
8595E, and 8596E spectrum analyzers only.
Displays the output of the sample-and-hold circuit in
the YTF span divider and driver on the A7 analog
interface assembly. This signal is then converted to a
current to drive the YTF.
The instrument must be in a single-band sweep for the
display to be valid.
The lower four divisions of the screen represent a 0 to
−10 V output range. Midscreen represents 0 V and
bottom-screen represents −10 V.
A ramp is displayed for all spans except zero span. In
zero span, a horizontal line is displayed.
The displayed voltage is the sum of the YTF fine-tune
DAC, YTF coarse-tune DAC, and YTF span voltages.
The voltage becomes more negative as the tuned
frequency increases.
Refer to Chapter 6 for further troubleshooting
information.
R
ELATED SOFTKEYS YTF TUNE COARSE
YTF TUNE FINE
YTF SPAN
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