Dedicated Controls
4–20
2715 User Manual
When the sweep is completed, the SGLSWP MODE message reappears
indicating the 2715 has completed the sweep and is ready to be rearmed.
If the 2715 is not in the free-run trigger mode (see SWP/TRIG on page 6–83 to
change modes), behavior is much the same.
Pressing [SINGLE] causes the current sweep to abort and the SGLSWP MODE
message to appear. If you press the key again, the SGLSWP ARM message
appears. This time, however, the 2715 waits for the first designated trigger
signal; when detected, a single sweep begins. After the sweep is complete, the
SGLSWP MODE message reappears.
You can start a new single sweep in any trigger mode as often as you wish by
pressing [SINGLE] after the SGLSWP MODE message appears.
18. Press [AUTO] in the SWEEP function block to exit from the single-sweep
mode.
The single-sweep mode is useful when you want to prevent a succeeding sweep
from overwriting a trace you just acquired or to capture the characteristics of
intermittent signals.
There is a dual, concentric-shaft LEVEL control below the FREQ/MKRS knob.
The inner knob controls the triggering level when the 2715 is in internal,
external, or line trigger modes, just as the equivalent control does on a conven-
tional oscilloscope. It also controls the horizontal sweep position in the manual
scan mode. It has no effect in the other trigger modes.
The outer knob controls the volume of the AM and FM demodulators and picture
framing in video monitor mode.
Alternate uses of the LEVEL control are discussed under DEMOD on page 6–56
and Manually Scanning on page 6–89.
The 2715 can display an analog spectrum of up to four sampled and stored
digital spectra. A major advantage of display storage is that it results in a
flicker-free sweep.
100.0MHz
(AUTO SWEEP)
ATTN 20DB
38.8DBM
VF 300KHz
5.0MHz/
10 DB/
300KHz RBW (AUTO)
CALIBRATOR
Level
Display Storage
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Страница 25: ...Getting Started ...
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