SWEEP
The sweep capability allows the comprehensive testing of
systems, as measurements at
single points will
not
necessarily
give an overall indication of the performance. The sweep
function is specified by the following parameters:
•
Start
value
•
Stop value
•
Number
of steps
•
Time per step
Up to five individually adjustable markers may be set. Each marker can
be
turned
on and off
separately. Sweep functions available
are:
•
Carrier frequency with or without modulation (available
in normal noise mode only)
•
RF level
•
Internal modulation rate
•
LF frequency (if in LF generator mode)
•
LF level
(if
in LF generator
mode).
The sweep can be operated in single shot or continuous
modes with the start command triggered
by a
key
press, an external pulse or GPIB control. Once started, the sweep can be stopped
at
any
time when the display will indicate the current parameter value. The sweep
can be used with
oscilloscopes,
X-Y display
units
and X-Y plotters by connecting the display unit
X
input to the
SWEEP RAMP output on the rear panel.
A
sweep
routine is
set up
as described
in
the following
paragraphs:
Sweep
type
(1)
Press the
[SWEEP]
hard key. The sweep parameters display, with soft key
options, appears on the
screen, see Fig.
3-1-19.
LOCAL
Start
Sweep
Markers
Sweep
Mode
Sweep
Type
Level Start:
0.0
dBm
Level Stop:
10.0
dBm
Number of:
1000
-
—
Steps
Step Time:
50
ms
Sweep Status: WAITING FOR TRIGGER
Sweep Mode: INTERNAL SINGLE
Sweep Type: RF LEVEL
Start
RF Level
Stop
RF Level
Number
of Steps
Step
Time
C0051
Fig.
3-1-19
Sweep parameters
display
3-1-28
46882-074C
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