Continuity and compatibility – Agilent Technologies N9010A User Manual
Page 155
Chapter 15
155
Option YAS - Y-Axis Screen Video Output
Other Y-Axis Screen Video Output Specifications
Continuity and Compatibility
Description
Specifications
Supplemental Information
Continuity and Compatibility
Output Tracks Video Level
During sweep
Yes
Except band breaks in swept spans
Between sweeps
See supplemental
information
Before sweep interruption
a
Alignments
b
Auto Align = Partial
cd
a. There is an interruption in the tracking of the video output before each sweep. During this interruption,
the video output holds instead of tracks for a time period given by approximately 1.8/RBW.
b. There is an interruption in the tracking of the video output during alignments. During this interruption,
the video output holds instead of tracking the envelope of the RF input signal. Alignments may be set
to prevent their interrupting video output tracking by setting Auto Align to Off.
c. Setting Auto Align to Off usually results in a warning message soon thereafter. Setting Auto Align to
Partial results in many fewer and shorter alignment interruptions, and maintains alignments for a longer
interval.
d. If video output interruptions for Partial alignments are unacceptable, setting the analyzer to External
Trigger without a trigger present can prevent these from occurring, but will prevent there being any
on-screen updating. Video output is always active even if the analyzer is not sweeping.
External trigger, no trigger
Yes
HP 8566/7/8 Compatibility
e
e. Compatibility with the HP/Agilent 8560 and 8590 families, and the ESA and PSA, is similar in most
respects.
Recorder output labeled “Video”
Continuous output
Alignment differences
f
f.
This section of specifications shows compatibility of the Screen Video function with HP
8566-Series analyzers. Compatibility with ESA and PSA analyzers is similar in most respects.
Output impedance
Two variants
g
g. Early HP 8566-family spectrum analyzers had a 140
Ω output impedance; later ones had 190Ω. The
specification was <475
Ω. The Analog Out port has a 50Ω impedance if the analyzer has Option B40,
DP2, or MPB. Otherwise, the Analog Out port impedance is nominally 140
Ω.
Gain calibration
LL and UR not supported
h
h. The HP 8566 family had LL (lower left) and UR (upper right) controls that could be used to calibrate
the levels from the video output circuit. These controls are not available in this option.
RF Signal to Video Output Delay
See footnote
i
i. The delay between the RF input and video output shown in
delay in the HP 8566 family spectrum analyzers. The latter has a delay of approximately 0.554/RBW +
0.159/VBW.