Tektronix RFM150, Инструкция по эксплуатации, Страница: 56 / 278

Functional Overview
2–10 RFM 150 Instruction Manual
Tuning
You can tune the instrument with either the knob or the numeric
keypad. In some modes, you can also tune by pressing an F key.
Entry mode. You can set the instrument to channel or frequency
entry mode by pressing CHAN or MHz. The selected mode is
indicated by an outline around either the channel or the frequency in
the top line of the display.
Tuning by knob. If channel entry mode is selected, turning the knob
sequences through the channels in the active channel table. If
frequency entry is selected, turning the knob tunes by frequency.
In some modes, the function keys determine the knob action. In this
case, tuning by knob may only be possible when none of the function
key labels are highlighted.
Tuning by keypad. Key in the channel number or frequency, then
press CHAN for channel entries, MHz for frequency entries, or
ENTER to use the current entry mode.
Tuning by preset. To tune the instrument to a preset frequency, press
and release the function key below the desired on-screen label. Refer
to page 3–14 for instructions on programming the presets.
In some measurement modes, you measure the signal at a frequency
that you have selected through another menu. For example, pilots
mode measures high and low pilots, which you can set through the
utility/configure menu. (You can also use the default settings.)
If you attempt to tune out of the specified frequency range (5 MHz to
1080 MHz), no change to tuning will occur (if using the keypad, an
out-of-range message will be displayed momentarily). If you tune to
a frequency that does not correspond to a channel in the active
channel table, the channel readout is replaced with ‘???’ and the
secondary measurement is not displayed.
Functional Overview
2–10 RFM 150 Instruction Manual
Tuning
You can tune the instrument with either the knob or the numeric
keypad. In some modes, you can also tune by pressing an F key.
Entry mode. You can set the instrument to channel or frequency
entry mode by pressing CHAN or MHz. The selected mode is
indicated by an outline around either the channel or the frequency in
the top line of the display.
Tuning by knob. If channel entry mode is selected, turning the knob
sequences through the channels in the active channel table. If
frequency entry is selected, turning the knob tunes by frequency.
In some modes, the function keys determine the knob action. In this
case, tuning by knob may only be possible when none of the function
key labels are highlighted.
Tuning by keypad. Key in the channel number or frequency, then
press CHAN for channel entries, MHz for frequency entries, or
ENTER to use the current entry mode.
Tuning by preset. To tune the instrument to a preset frequency, press
and release the function key below the desired on-screen label. Refer
to page 3–14 for instructions on programming the presets.
In some measurement modes, you measure the signal at a frequency
that you have selected through another menu. For example, pilots
mode measures high and low pilots, which you can set through the
utility/configure menu. (You can also use the default settings.)
If you attempt to tune out of the specified frequency range (5 MHz to
1080 MHz), no change to tuning will occur (if using the keypad, an
out-of-range message will be displayed momentarily). If you tune to
a frequency that does not correspond to a channel in the active
channel table, the channel readout is replaced with ‘???’ and the
secondary measurement is not displayed.