TB 9-6625-781-24
d. After 72 hour warm-up period, connect autotransformer between TI and 115 V
power source.
e. Adjust output of autotransformer to 115 V.
f. Turn SAMPLE RATE control to midrange and allow 1 hour for restabilization of
crystal oscillator.
8. Oscillator Stability
a. Performance Check
(1) Connect equipment as shown in figure 1.
(2) Position controls as listed in (a) through (d) below:
(a) MODE switch (rear panel) to INT STD FREQ.
(b) OUTPUT switch (rear panel) to 1 MC.
(c) FUNCTION switch to FREQUENCY.
(d) STORAGE switch (rear panel) to OFF.
Figure 1. Oscillator stability - equipment setup.