Timebase
Standard
TCXO
Option 010
Ultra-High Stability OCXO
Aging
1
(spec)
24-hour, T
CAL
±1 °C ± 0.3 ppb (typ)
30-day, T
CAL
±5 °C ± 0.2 ppm (typ) ± 10 ppb
1-year, T
CAL
±5 °C ± 1 ppm ± 50 ppb
2-year, T
CAL
±5 °C ± 0.5 ppm ± 25 ppb
Temperature (typ)
2
0 °C to T
CAL
- 5 °C and T
CAL
+ 5 °C to 55 °C ± 1 ppm ± 5 ppb
Calibration uncertainty
3
Initial factory calibration (typ) ± 0.5 ppm ± 50 ppb
Settability error ± 0.1 ppb ± 0.01 ppb
Supplemental characteristics (typ)
5-min. warm-up error
4
± 1 ppm ± 10 ppb
72-hour retrace error
5
< 50 ppb < 2 ppb
Allan deviation τ = 1s 1 ppb 0.01 ppb
Timebase Uncertainty = ( Aging + Temperature + Calibration Uncertainty )
1. All Timebase Aging Errors apply only after an initial 30-days of continuous powered operation and for a constant altitude ±100 m. After the
rst 1-year of operation, use ½ x (30-day and 1-year) aging rates shown.
2. Additional temperature error is included in the time base uncertainty equation if the temperature of the operating environment is outside
the T
CAL
± 5 °C (calibration temperature) range. The error is applied in its entirety, not per °C.
3. Initial factory calibration error applies to the original instrument calibration upon receipt from the factory. This error is applied until the
rst re-calibration occurs after shipment. Settability error is the minimum adjustment increment (resolution) achievable during electronic
adjustment (calibration) of the instrument. It is added to the uncertainty of your calibration source.
4. Warm-up error applies when the instrument is powered on in a stable operating environment.
5. When moved between different operating environments add the Temperature error during the initial 30-minutes of powered operation
6. Retrace error may occur whenever the instrument line-power is removed or whenever the instrument is battery operated and the battery
fully discharges. Retrace error is the residual timebase shift that remains 72-hours after powering-on an instrument that has experienced a
full power-cycle of the timebase. Additional frequency shift errors may occur for instrument exposure to severe impact shocks > 50 g.
Timebase
Front/rear view of 53230A
15 | Keysight | 53200A Series RF/Universal Frequency Counter/Timers - Data Sheet
