Tektronix 2714 User Manual page 146

Enhanced Versatility
NOTE
The CATV mode assumes full control of the waveform
storage registers. Therefore, waveforms stored manually
will be erased when CATV mode is activated at power-up,
during a reboot cycle ([UTIL] [5] [0] [9]), or when it is
reactivated after having been disabled.
To manually save a waveform, press [SAVE ENABLE]. The red LED
below SAVE ENABLE lights. This indicates that the SAVE function is
To save into the A register what is presently being displayed, press
[A]. The green LED below [A] lights, but observe that the A register
was turned off and remains turned off. Turn off the D register and turn
on the A register. Notice that the display does not change with time.
The contents of the A register are not being updated. You are viewing
a saved sweep.
Now save something into the B register. Activate the B register and
ensure the A register is turned off. Set the resolution bandwidth to
30 kHz. Press [SAVE ENABLE] [B].
The current sweep is saved and the B green LED lights. The register
remains active, but because it Is now saved, it is no longer updated.
NOTE
Status of the red ERX) is not changed by the save opera-
Deactivate all registers (all red LEDs extinguished). Set the resolution
bandwidth to 5 MHz and press [SAVE ENABLE] [C]. The C green
LED lights. Activate the C register, and the digitized and saved version
of the analog sweep is displayed. The digitizer is continuously up-
dated, whether it is being displayed or not. Further, it is aways the
current digitizer output that is saved. You cannot, for instance, save
one register into another. However, non-volatile 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 in Section 7).
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