Tektronix RSA306 - Page 25

Performance ver
ification
Table 3: Internal reference frequency instability calculations
Marker frequency Value
Instability measured
[(Marker freq
uency – 1x10
9
)/1000] ppm
Instability due to aging
(See Table 4.)
Instability due to other drift
(18°Cto28°C)
±3 ppm
Total specified Instability
(aging plus other drift)
Table 4: In
stability due to aging
Time period
Aging aft
er initial
calibration
(same date of
manufacture)
Aging after
calibrat
ion
(Calibrated more
than 1 year after
manufacture)
0 to 3 months ±1 ppm ±0.5 ppm
3 to 6 months ±2 ppm ±0.8 ppm
6 to 12 months ±3 ppm ±1 ppm
1 year to 2 years ±4 ppm ±2 ppm
RSA306 Specifications and Performance Verification 14