TB 9-6625-2235-24
(18) Set FREQ SPAN/DIV switch to 500 kHz.
(19) Center LO feedthrough signal on crt with TUNING control.
(20) Press FREQUENCY CAL pushbutton.
(21) Repeat (19) above.
(22) Adjust FREQUENCY ZERO control for 00.0 indication on FREQUENCY
MHz readout.
(23) Adjust INPUT ATTEN (OPTIMUM INPUT) switch for workable signal
level on crt.
(24) Adjust TUNING control to center 1500 MHz signal on crt.
(25) Press FREQUENCY CAL pushbutton and recenter 1500 MHz signal with
TUNING control. Adjust A1A2R3 (located on A1A2 board) for FREQUENCY MHz
readout indication between 1499 and 1501 MHz (R).
(26) Adjust signal generator frequency to 190 MHz.
(27) Adjust TUNING control to center 190 MHz signal on crt.
(28) Press FREQUENCY CAL pushbutton.
indication of 190.0 (R).
(30) Adjust TUNING control for FREQUENCY MHz readout indication of 198.5
and slowly adjust A7R8 (fig. 9) ccw until range switches (no decimal on FREQUENCY
MHz readout (R).
(31) Center LO feedthrough signal on crt with TUNING control.
(32) Press FREQUENCY CAL pushbutton.
(33) Repeat (31) above.
(34) Adjust signal generator frequency to 200 MHz.
(35) Center 200 MHz signal on crt with TUNING control.
(36) Press FREQUENCY CAL pushbutton.
(37) Repeat (35) above and adjust A7R72 (fig. 9) for FREQUENCY MHz readout
indication of 200.0 (R).
19