f. Adjust L1104 (Fig. 6-34) until the oscillator shift range,
b. Turn the INT REF FREQ control ON and the band
as the INT REF FREQ is rotated, is 1.2 kHz. The display is
selector to band C.
the 200th harmonic of the 1 MHz signal. The range of the
c. Set the FINE RF CENTER FREQ control to its midrange
INT REF FREQ control will also be related to the 200th
harmonic, so 1.2 kHz X 200 = 240 kHz. With 100 kHz/Div
d. Push the LOCK CHECK button and adjust the Band C
Bal R1140 for a centered trace.
g. Remove the P6040 Probe, attenuator and adapters, then
reconnect the coaxial cable between J120 and J109.
e. Switch the band selector to B or A.
f. Push the LOCK CHECK button and adjust the A and
B Bal R1150 for a centered trace,
28. Adjust Band C Balance then Band A
g. Check the DC balance between the level for band A
and B Balance
or B to band C by switching the band selector between B
a. Equipment setup is as given for step 26.
and C. Adjust A and B, DC level to set level for band C.