Time - HP 8642A Operation And Calibration Manual

Model 8642A/B
Operation
RF Frequency Sweep (cont'd)
Example for Calculation #4 (cont'd)
To obtain a step size of
8
MHz, you can set the sweep time between the results of the
following calculations:
[( 1100
~
500 1 )
+
1]
x
135 ms
6885
ms or 6.885s
[( 1100
~
5001 )
+
2]
X
135 ms
7020 ms or 7.020s
SWEEP SWEEP
I
SWEEP DATA
I
~
ALTO
~
I
TIME
OJ
(M~I)
START
FRED
START
i
START
AMPTD
fREO
LOCAL i
(keys)
SWEEP DATA SWEEP DATA
START
OJWW
(
M~l
)
FRED
[][]
FRED
OJWW [ME]
..
(program
FASA ST 7 SC FA 100 MZ FB 500 MZ'
codes)
1-
These codes are not lIlderendent ana TJlight Heed to follow a specific sequence for
entry Refer to the discussion about Sequence Dependency, which begins on page 3-12 in
the HP-IB portion of this Section III.
Display
I r;t r;t r;t
iii
r;t r;t r;t r;t
m
7
I
lW lW.lW lW lW lW lW lW
III L
START 'REO SWPNG
.....
5 0 0.0 0 0 0 0 0
m z
STOP
The display usually shows the start frequency and the stop frequency settings If another
active functioll is sele,'lcd, the
dl~play
could Indicate frequency sweep with the SWPNG
annuIlciator or by (itsplaying FRQ SWEEPING ill the left portion of the display above
the FREQ annunciator. To actually see the 8 l\IHl steps all the display, you can select
manual sweep and turn the Knob sluwly or use the Step keys.
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