Tektronix RSA306 Technical Reference page 25

Table 3: Internal reference frequency instability calculations
Marker frequency
Instability measured
[(Marker frequency – 1x10
Instability due to aging
(See Table 4.)
Instability due to other drift
(18 °C to 28 °C)
Total specified Instability
(aging plus other drift)
Table 4: Instability due to aging
Time period
0 to 3 months
3 to 6 months
6 to 12 months
1 year to 2 years
RSA306 Specifications and Performance Verification
)/1000] ppm
9
Aging after initial
calibration
(same date of
manufacture)
±1 ppm
±2 ppm
±3 ppm
±4 ppm
Value
±3 ppm
Aging after
calibration
(Calibrated more
than 1 year after
manufacture)
±0.5 ppm
±0.8 ppm
±1 ppm
±2 ppm
Performance verification
14