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14 Chapter 1
Agilent EXA Signal Analyzer
Definitions and Requirements
Definitions and Requirements
This book contains signal analyzer specifications and supplemental information. The distinction among
specifications, typical performance, and nominal values are described as follows.
Definitions
• Specifications describe the performance of parameters covered by the product warranty (temperature
= 5 to 50°C, unless otherwise noted).
• 95th percentile values indicate the breadth of the population (≈2σ) of performance tolerances
expected to be met in 95% of the cases with a 95% confidence, for any ambient temperature in the
range of 20 to 30°C. In addition to the statistical observations of a sample of instruments, these values
include the effects of the uncertainties of external calibration references. These values are not
warranted. These values are updated occasionally if a significant change in the statistically observed
behavior of production instruments is observed.
• Typical describes additional product performance information that is not covered by the product
warranty. It is performance beyond specification that 80% of the units exhibit with a 95% confidence
level over the temperature range 20 to 30°C. Typical performance does not include measurement
uncertainty.
• Nominal values indicate expected performance, or describe product performance that is useful in the
application of the product, but is not covered by the product warranty.
Conditions Required to Meet Specifications
The following conditions must be met for the analyzer to meet its specifications.
• The analyzer is within its calibration cycle. See the General section of this chapter.
• Under auto couple control, except that Auto Sweep Time Rules = Accy.
• For signal frequencies < 10 MHz, DC coupling applied.
• Any analyzer that has been stored at a temperature range inside the allowed storage range but outside
the allowed operating range must be stored at an ambient temperature within the allowed operating
range for at least two hours before being turned on.
• The analyzer has been turned on at least 30 minutes with Auto Align set to Normal, or if Auto Align
is set to Off or Partial, alignments must have been run recently enough to prevent an Alert message. If
the Alert condition is changed from “Time and Temperature” to one of the disabled duration choices,
the analyzer may fail to meet specifications without informing the user.
Certification
Agilent Technologies certifies that this product met its published specifications at the time of shipment
from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to
the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s
calibration facility, and to the calibration facilities of other International Standards Organization
members.