Tektronix 2715, User Manual

Page: 51 / 360

Operating Basics
2715 User Manual
3–3
Trace alignment controls and various input/output connectors are located at the
rear panel. Figure 3–9 on page 3–10 shows the spectrum analyzer back panel and
its connectors. The alignment controls are discussed in Miscellaneous Controls
on page 4–33, and the connector terminations are described in Appendix E:
External Input and Output.
The menu structures are shown starting on page 3–11. Some menu items are not
present because they either are not available at the current menu level, are
intended primarily for factory calibration and troubleshooting, or they apply to
instrument options not currently installed.
A brief description of the function of each of the listed menu selections is given.
The functions of the menu selections are discussed in greater detail in the CATV
Measurements and Spectrum Analyzer Menus sections.
Figure 3–3: The Frequency/Marker Function Block
In the normal spectral display mode, the knob changes the center, or start,
frequency by 0.02 of the span/div per click. In programmed or tabular tuning
modes frequency is changed by the designated tuning increment per click. In
ZERO SPAN frequency is changed by a percent of the resolution BW per click
(see Selecting the Tuning Increment on page 6–21). In other modes, the knob
may control marker horizontal position or video line number.
One press initiates a center measure. The frequency of the signal nearest center
screen (or nearest the marker, if active) is measured and made the new center
frequency. Signal frequency and amplitude are displayed at the upper right of the
screen. Two quick presses enter the signal track mode (continuously repeated
center measures, enabling a drifting signal to be tracked); signal frequency
readout is optional in this mode and is enabled by pressing [MKR/FREQ] [9] [1].
A third press returns to normal operation.
FREQ/MKRS
CTR-MEAS/TRKG