Dedicated Controls
2715 User Manual
4–23
13. Deactivate all registers (all red LEDs extinguished).
14. Set the resolution bandwidth to 5 MHz.
15. Press [SAVE ENABLE] [C].
The green C LED lights.
16. Activate the C register.
The digitized and saved version of the analog sweep is displayed. The
digitizer is continuously updated, whether it is being displayed or not.
Further, it is always the current digitizer output that is saved. You cannot, for
instance, save one register into another. However, nonvolatile RAM does
make it possible to permanently save the contents of the display registers by
transferring them to stored settings registers (see Other User-Defined
Settings on page 6–63).
17. Press [SAVE ENABLE] [A] to deactivate the C register and activate A.
The A green LED turns off, indicating there is nothing stored in the
A register. The register remains active, but the displayed spectrum is now
updated during each sweep.
The on-screen readouts are stored along with the sweep. Since the 2715 displays
only one group of readouts at a time, the readouts for the highest priority register
are displayed when multiple registers are active. Register priority is shown in the
following chart.
Priority
Register
Highest
D-register, current waveform
:
C-register, current waveform
:
B-register, current waveform
:
A-register, current waveform
:
D-register, saved waveform
:
C-register, saved waveform
:
B-register, saved waveform
Lowest
A-register, saved waveform
To see how register priority works, view some spectra:
18. Turn off A, turn on B, and note the on-screen readouts.
The indicated resolution bandwidth should read 30 kHz.
19. Turn on C.
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