Precision Frequency Reference - Keysight M9290A Manual

Description

Precision Frequency Reference

(Option PFR)
Accuracy
Temperature Stability
20 to 30C
Full temperature range
Aging Rate
Total Aging
1 Year
2 Years
Settability
c
Warm-up and Retrace
300 s after turn on
900 s after turn on
Achievable Initial Calibration Accuracy
Standby power to reference oscillator
Residual FM
(Center Frequency = 1 GHz
10 Hz RBW, 10 Hz VBW)
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 15 minutes.
c.
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 the power is applied.
The effect of retracing is included within the "Achievable Initial Calibration Accuracy" term of the Accuracy
equation.
d.
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
14
Specifications
[(time since last adjustment 
aging rate) + temperature stability
+ calibration accuracy
8
1.5  10
8
5  10
7
1  10
7
1.5  10
9
2  10
8
d
4  10
Supplemental
Information
a b
]
10
5  10
Nominal
7
1  10
8
1  10
Not supplied
 (0.25 Hz) p-p in 20 ms
(nominal)
/day (nominal)
of final frequency
of final frequency