Tektronix RFM150, Инструкция по эксплуатации

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Making Measurements
RFM 150 Instruction Manual 2–25
Table 2–5: Functions of active keys in all channel mode
Key Action
Menu keys Enters selected menu. (Aborts a partial keypad entry.)
Function keys F1 assigns the knob to select the reference level. F2 toggles the active
marker between marker 1 and marker 2, and assigns the knob and
numeric keypad to tune that marker. (The knob and keypad can be
uncoupled.)
Knob If F1 is selected, turning the knob will select the reference level. If F2 is
selected, turning the knob will tune the active marker (1 or 2).
Numeric keypad Keying in a channel or frequency, followed by CHAN, MHz, or ENTER,
tunes the active marker if the keyed channel or frequency corresponds to
a channel in the active channel table.
CHAN Terminates a keypad entry as channel.
MHz Terminates a keypad entry as frequency.
ENTER Terminates a keypad entry as frequency.
Pressing backspace during a keypad entry erases the character
preceding the cursor. Backspacing 1 click after field is empty aborts
partial entry.
HELP Displays context-sensitive help screen; aborts a partial keypad entry.
ESC Aborts a partial keypad entry without changing the instrument setup.
Display.
In the all-channel mode, the instrument continuously scans
all the channels in the channel table and produces a graphical display
where the visual carrier level of each channel is plotted as a vertical
bar. The vertical range is 50 dB, 10 divisions at 5 dB per division.
If the higher frequencies are not used, the all channel display will fill
only the left portion of the screen. The companion CSS150 software
can be used to create a custom channel table that does not contain
unused frequencies. After making this custom channel table active,
screen utilization will be significantly improved for most systems.
Making Measurements
RFM 150 Instruction Manual 2–25
Table 2–5: Functions of active keys in all channel mode
Key Action
Menu keys Enters selected menu. (Aborts a partial keypad entry.)
Function keys F1 assigns the knob to select the reference level. F2 toggles the active
marker between marker 1 and marker 2, and assigns the knob and
numeric keypad to tune that marker. (The knob and keypad can be
uncoupled.)
Knob If F1 is selected, turning the knob will select the reference level. If F2 is
selected, turning the knob will tune the active marker (1 or 2).
Numeric keypad Keying in a channel or frequency, followed by CHAN, MHz, or ENTER,
tunes the active marker if the keyed channel or frequency corresponds to
a channel in the active channel table.
CHAN Terminates a keypad entry as channel.
MHz Terminates a keypad entry as frequency.
ENTER Terminates a keypad entry as frequency.
Pressing backspace during a keypad entry erases the character
preceding the cursor. Backspacing 1 click after field is empty aborts
partial entry.
HELP Displays context-sensitive help screen; aborts a partial keypad entry.
ESC Aborts a partial keypad entry without changing the instrument setup.
Display.
In the all-channel mode, the instrument continuously scans
all the channels in the channel table and produces a graphical display
where the visual carrier level of each channel is plotted as a vertical
bar. The vertical range is 50 dB, 10 divisions at 5 dB per division.
If the higher frequencies are not used, the all channel display will fill
only the left portion of the screen. The companion CSS150 software
can be used to create a custom channel table that does not contain
unused frequencies. After making this custom channel table active,
screen utilization will be significantly improved for most systems.