HP 8568B, Performance Tests And Adjustments Manual, Page: 86 / 313

19. Fast Sweep Time Accuracy Test ms)
5. Press MARKER
(
PEAK
6. Set
[
FREQUENCY SPAN
)
to 0 Hz, to 3 MHz, to 3
MHz, and press TRIGGER
7. Set synthesized sweeper for an amplitude-modulated output.
8. Set function generator controls as follows:
FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . triangular wave
AMPLITUDE . . . . . . . . . . . . . .
approximately 1 Vp-p
OFFSET
. . . . . . CAL position (in)
SYM . . . . . . CAL position (in)
T R I G G E R P H A S E
FREE RUN
MODULATION .
. all out
9. Key in
(
SWEEP TIME
]
5 ms and set function generator for a counter
reading of 2.00
10. Adjust spectrum analyzer TRIGGER LEVEL to place a peak of
the triangular waveform on the first graticule from the left edge
of the CRT display as a reference. (Adjust function generator
amplitude, if necessary, to provide a signal large enough to
produce a stable display). The fifth peak from the reference
should be within
division of the sixth graticule from the left
edge of the display (see Figure 2-34).
11. Using sweep times and function generator frequencies in
2-18, check sweep time accuracy for sweep times ms by
procedure of step 10.
Figure 2-34. Fast Sweep Time Measurement ms)
2-64 Performance Tests