Tektronix 2714 User Manual page 144

Enhanced Versatility
control does on a conventional oscilloscope. It also controls the
horizontal sweep position in the manual scan mode. It has no effect in
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 and
Manually Scanning in Section 7.
DISPLAY STORAGE
The 2714 can display an analog spectrum of up to four sampled and
stored digital spectra. A major advantage of display storage is that it
100.0MHz (AUTO SWEEP) ATTN 20DB
38.8DBM VF 300KHz
5.0MHz/ 10 DB/
300KHz RBW (AUTO) CALIBRATOR
The digital display storage registers are named A, B, C, and D. Their
status is controlled by the [A], [B], [C], and [D] keys; the red and
green LEDs below each key indicate the status of the corresponding
register. When a red LED is lit, the contents of the corresponding
register are displayed. The contents of a register can be either the
measurement currently being carried out or previously saved data.
When only a red LEDis lit, the register contents are the result of the
2714's current activity. Current results are updated from the signal at
the 2714 input during each sweep. The present control settings are
used for the update.
When an A, B, or C green LED is lit, the corresponding register con-
tains a saved sweep (the on-screen readouts are saved along with the
sweep). A saved sweep cannot be erased, modified, or updated
without operator interaction.
When the D green LED is lit, the 2714 is in the "waterfall" mode.
2714 User Manual 5-25