Frequency Accuracy (300 MHz to 18 GHz)

TB 9-6625-2192-24

(3) Turn frequency dial to 4.0 GHz.

(4) Tighten alien setscrews.

(5) Adjust synthesized signal generator frequency controls for a cw frequency of 4.2 GHz

(Harris PDR, Type LS-518) or 12.4 GHz (Harris PDR, Type CX-518).

(6) Adjust frequency dial for maximum dip on power meter.

(7) Remove TI knob and base and loosen dial setscrews.

NOTE

The dial setscrews must be loosened from inside the dial

holder. The initial factory dial calibration setting at the high

frequency end is made approximately one-half turn ccw from

the high frequency end stop. However, with the dial set near

the high end of its travel, the dial setscrews are not accessible.

The dial must be rotated approximately six turns toward the

low frequency end (ccw) to allow loosening of the dial setscrews.

(8) With a maximum dip on power meter, adjust TI FREQUENCY dial to same

frequency of microwave frequency counter.

(9) Tighten dial setscrews and reassemble TI (R).

(10) Loosen three setscrews a (fig. 2) on knob b (fig. 2) and remove knob b (fig. 2)

from turning shaft c (fig. 2).

(11) Loosen and remove four cap screws d (fig. 2) holding cover to base assembly.

(12) Remove TI cover.

(13) Connect equipment as shown in figure 1.

(14) Adjust synthesized signal generator frequency controls for microwave frequency

counter indication of 4.00 GHz.

(15) Rotate tuning shaft c (fig. 2) for a dip indication on power meter.

(16) Loosen two set screws e (fig. 2) on drive gear f (fig. 2).