Agilent Technologies N9010A - Manual (Page 23)

Chapter 1 23
Agilent EXA Signal Analyzer
Frequency and Time
Description Specifications Supplemental
Information
Precision Frequency Reference
(Option PFR)
Accuracy
±[(time since last adjustment
× aging rate) + temperature
stability + calibration
accuracy
a
]
b
a. Calibration accuracy depends on how accurately the frequency standard was adjusted to 10 MHz. If the
adjustment procedure is followed, the calibration accuracy is given by the specification “Achievable
Initial Calibration Accuracy.”
b. The specification applies after the analyzer has been powered on for four hours.
Temperature Stability
20 to 30
°C ±1.5 × 10
−8
Nominally linear
c
c. Narrow temperature range performance is nominally linear with temperature. For example, for
25±3º C, the stability would be only three-fifths as large as the warranted 25±5º C, thus ±0.9
× 10 −8
.
Full temperature range
±5 × 10
−8
Aging Rate
±5 × 10 −10
/day (nominal)
Total Aging
1 Year
±1 × 10 −7
2 Years
±1.5 × 10 −7
Settability
±2 × 10 −9
Warm-up and Retrace
d
d. Standby mode does not apply power to the oscillator. Therefore warm-up applies every time the power
is turned on. The warm-up reference is one hour after turning the power on. Retracing also occurs
every time warm-up occurs. The effect of retracing is included within the “Achievable Initial Calibra-
tion Accuracy” term of the Accuracy equation.
Nominal
300 s after turn on
±1 × 10 −7
of final frequency
900 s after turn on
±1 × 10 −8
of final frequency
Achievable Initial Calibration Accuracy
e
e. The achievable calibration accuracy at the beginning of the calibration cycle includes these effects:
1) Temperature difference between the calibration environment and the use environment
2) Orientation relative to the gravitation field changing between the calibration environment and the
use environment
3) Retrace effects in both the calibration environment and the use environment due to turning the
instrument power off.
4) Settability
±4 × 10 −8
Standby power to reference oscillator Not supplied
Residual FM
(Center Frequency = 1 GHz
10 Hz RBW, 10 Hz VBW)
≤0.25 Hz × N f
p-p in 20 ms
(nominal)
f. N is the LO multiplication factor.