ACCEPTANCE TESTING
5-31
(9) Refer to Results table 5-43 on page 5-50. Set the RF signal generator to provide a frequency
of 1000 MHz at a level of 0 dBm.
(10) Check that the UUT indicates a frequency between 999.999500 MHz and
1000.000500 MHz. If the instrument is fitted with option 3, the high stability (OCXO)
internal frequency standard, check that the reading falls between the limits 999.999750 and
1000.000250. The test limits in this step are for guidance and assume that the internal
frequency standard has been recently adjusted. Ageing and stability have to be considered
when establishing the real test limits.
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