Table 7 can serve as an acceptance test and gives a worst case figure after 30 minutes warm-up time. All deviations that can occur in a year are added together.
| Oscillator | Frequency Readout | Suitable Reference | P/F |
| Standard (TCXO) | 10.00000000 MHz + 150 Hz | 6688 | |
| Option 30 (OCXO) | 10.00000000 MHz + 1Hz | 6689 | |
| Option 40 (OCXO) | 10.00000000 MHz + 0.25 Hz | 6689 |