94
Chapter 4
Front-Panel Key Reference
Preset
Preset
Preset
provides a convenient starting point for making most
measurements. Pressing
Preset
displays menu keys used for accessing
the operating modes available for your spectrum analyzer. See the
following Preset Conditions Table, for the conditions established by
pressing
Preset
.
The instrument preset function performs a processor test, but does not
affect alignment data. Pressing
Preset
clears both the input and output
buffers, but does not clear trace B. The amplitude values of trace C are
set to the reference level. Amplitude-correction factors are turned off.
Limit line testing is turned off, but the limit line tables remain in
spectrum analyzer memory. The status byte is set to 0.
NOTE
Turning the spectrum analyzer on performs an instrument preset.
Turning on the spectrum analyzer also fetches alignment data;
completes a processor test; clears trace B, trace C, and both the input
and output buffers; turns off amplitude-correction factors; turns off
limit line testing; and sets the status byte to 0. The last state of the
spectrum analyzer (before it was switched off) is recalled when
Power
On IP Last
is set so that
Last
is underlined.
Table 4-1
Preset Conditions
Amplitude correction
factors
off
Amplitude units
default values
Annotation and
graticule display
on
Attenuation
10 dB (auto-coupled)
Center frequency
750 MHz
CF step size
10% of span
Coupled functions
all set to AUTO
Detector
positive peak
Display line level
2.5 divisions below reference level, display off
Frequency offset
0 Hz
Limit line testing
off
Log scale
10 dB/division
Marker counter
off
Содержание ESA-L1500A
Страница 12: ...11 1 Preparing for Use and Printing ...
Страница 28: ...27 2 Getting Started ...
Страница 44: ...Chapter 2 43 Getting Started Making a Measurement Figure 2 5 Reading the Amplitude and Frequency ...
Страница 47: ...46 Chapter2 Getting Started Analyzer Battery Information ...
Страница 48: ...47 3 Troubleshooting ...
Страница 54: ...Chapter 3 53 Troubleshooting How to Return Your Analyzer for Service Figure 3 1 ...
Страница 117: ...116 Chapter4 Front Panel Key Reference Trig ...
Страница 118: ...117 5 Menu Maps ...
Страница 119: ...118 Chapter5 Menu Maps ...
Страница 120: ...Chapter 5 119 Menu Maps ...
Страница 121: ...120 Chapter5 Menu Maps ...
Страница 122: ...Chapter 5 121 Menu Maps ...
Страница 124: ...Chapter 5 123 Menu Maps ...
Страница 125: ...124 Chapter5 Menu Maps ...
Страница 127: ...126 Chapter5 Menu Maps a Frequency is replaced with Time when the X Axis Units Freq Time selection is Time ...
Страница 128: ...Chapter 5 127 Menu Maps ...
Страница 129: ...128 Chapter5 Menu Maps ...
Страница 130: ...Chapter 5 129 Menu Maps ...
Страница 131: ...130 Chapter5 Menu Maps ...
Страница 135: ...134 Chapter5 Menu Maps ...
Страница 136: ...135 6 Options and Accessories ...
Страница 145: ...144 Chapter6 Options and Accessories Accessories ...
Страница 146: ...145 7 Specifications ...
Страница 179: ...178 Chapter7 Specifications Regulatory Information ...
Страница 180: ...179 8 Required Equipment ...
Страница 187: ...186 Chapter8 Required Equipment Test Equipment ...
Страница 308: ...307 10 Performance Verification Test Record ...
Страница 321: ...320 Chapter10 Performance Verification Test Record HP ESA L1500A Performance Verification Test Record ...