TB 9-6625-2080-24
17. Frequency Stability
a. Performance Check.
(1) Connect a 1 MHz output signal from time frequency workstation to REF INPUT
of frequency difference meter.
(2) Connect TI J1 RF OUT to SIG INPUT of frequency difference meter.
(3) Note indication on frequency difference meter. If indication is greater than 1
part in 109, perform b below.
b. Adjustments
(1) Adjust FREQ ADJ (located to right of J2) for an indication of 1 part in 1010 or
less on frequency difference meter.
(2) Allow at least 24 hours for oscillator stabilization. Frequency difference meter
will not change more than 1 part in 1010.
18. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
7/(8 Blank)