Tektronix RFM150, Instruction Manual

Page: 54 / 278

Functional Overview
2–8 RFM 150 Instruction Manual
Explanation of Readouts
Refer to the sample measurement screen in Figure 2–4 while reading
this list of commonly-used display readouts and labels.
1. The measurement mode is shown in the upper right corner, and
the screen scale factor (if applicable) appears below it.
2. The top line of the screen shows the channel number and
frequency of the signal being measured.
3. An outline around either the channel number or frequency
indicates the entry mode. (A dashed outline indicates that the
knob and keypad are uncoupled.) In Figure 2–4, the frequency is
outlined, so keypad or knob entries will be interpreted as
frequency, unless CHAN is pressed to change the entry mode to
channel.
4. Typically, this measurement is the visual carrier level. It is
displayed in a larger type size than the rest of the display, with
the units appearing next to the measured value.
An asterisk (*) next to a measured level indicates that a
channel-specific amplitude offset (as set in the channel table) has
been applied to the measured value. To find the actual offsets,
press UTIL, then CHAN TABLE and EDIT CHANS. Note that
this is different than the probe loss offset.
5. In this example, the second measurement on the screen is the
aural carrier level difference. It is displayed in a larger type size
than the rest of the display, with the units appearing next to the
measured value. Other measurements, such as C/N and Hum, can
appear here.
6. Labels across the bottom of the screen define function key
actions. When the corresponding function key is pressed, the
labeled action will occur, or the labeled submenu will be entered.
When the function keys are assigned to the presets, as in
Figure 2–4, pressing a function key tunes the instrument to the
programmed preset frequency. (Programming the Presets is
described on page 3–14.)
7. When a function key is selected, its label is highlighted. When
the function keys control the knob assignment, the highlighted
Functional Overview
2–8 RFM 150 Instruction Manual
Explanation of Readouts
Refer to the sample measurement screen in Figure 2–4 while reading
this list of commonly-used display readouts and labels.
1. The measurement mode is shown in the upper right corner, and
the screen scale factor (if applicable) appears below it.
2. The top line of the screen shows the channel number and
frequency of the signal being measured.
3. An outline around either the channel number or frequency
indicates the entry mode. (A dashed outline indicates that the
knob and keypad are uncoupled.) In Figure 2–4, the frequency is
outlined, so keypad or knob entries will be interpreted as
frequency, unless CHAN is pressed to change the entry mode to
channel.
4. Typically, this measurement is the visual carrier level. It is
displayed in a larger type size than the rest of the display, with
the units appearing next to the measured value.
An asterisk (*) next to a measured level indicates that a
channel-specific amplitude offset (as set in the channel table) has
been applied to the measured value. To find the actual offsets,
press UTIL, then CHAN TABLE and EDIT CHANS. Note that
this is different than the probe loss offset.
5. In this example, the second measurement on the screen is the
aural carrier level difference. It is displayed in a larger type size
than the rest of the display, with the units appearing next to the
measured value. Other measurements, such as C/N and Hum, can
appear here.
6. Labels across the bottom of the screen define function key
actions. When the corresponding function key is pressed, the
labeled action will occur, or the labeled submenu will be entered.
When the function keys are assigned to the presets, as in
Figure 2–4, pressing a function key tunes the instrument to the
programmed preset frequency. (Programming the Presets is
described on page 3–14.)
7. When a function key is selected, its label is highlighted. When
the function keys control the knob assignment, the highlighted