Tektronix RFM150, Инструкция по эксплуатации

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Making Measurements
RFM 150 Instruction Manual 2–27
Meter Mode
METER provides general purpose level measurement capabilities,
with a simulated analog meter and FM signal monitoring. The
speaker is driven by the FM-demodulated tuned signal, and is always
turned on in the meter mode. Manual configuration of many features
in the meter mode provides flexibility for special applications. If you
do not require these features, signal level monitoring may be more
easily accomplished with the 1 channel mode. The instrument does
not autorange in meter mode; the user must select an appropriate
reference level. Table 2–6 defines the key actions in this mode.
Table 2–6: Functions of active keys in meter mode
Key Action
Menu keys Enters selected menu. (Aborts a partial keypad entry.)
Function keys Tune instrument to preset frequencies. Override partial keypad entry.
Knob Controls reference level if F1 is highlighted; speaker volume if F2 is
selected. If neither of these two functions is highlighted, then the knob
controls tuning according to the active entry mode (either chan. or freq.,
as outlined in the top line of the display). Overrides partial keypad entry.
Numeric keypad Keying either channel or frequency, followed by CHAN, MHz, or ENTER,
tunes the instrument – if chan. or freq. is in the active channel table.
CHAN Terminates keypad entry as channel. Switches to channel entry mode.
MHz Terminates keypad entry as frequency. Switches to frequency entry
mode.
ENTER Terminates a keypad entry in the active entry mode (channel or
frequency, as outlined in the top line of the display).
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.
Making Measurements
RFM 150 Instruction Manual 2–27
Meter Mode
METER provides general purpose level measurement capabilities,
with a simulated analog meter and FM signal monitoring. The
speaker is driven by the FM-demodulated tuned signal, and is always
turned on in the meter mode. Manual configuration of many features
in the meter mode provides flexibility for special applications. If you
do not require these features, signal level monitoring may be more
easily accomplished with the 1 channel mode. The instrument does
not autorange in meter mode; the user must select an appropriate
reference level. Table 2–6 defines the key actions in this mode.
Table 2–6: Functions of active keys in meter mode
Key Action
Menu keys Enters selected menu. (Aborts a partial keypad entry.)
Function keys Tune instrument to preset frequencies. Override partial keypad entry.
Knob Controls reference level if F1 is highlighted; speaker volume if F2 is
selected. If neither of these two functions is highlighted, then the knob
controls tuning according to the active entry mode (either chan. or freq.,
as outlined in the top line of the display). Overrides partial keypad entry.
Numeric keypad Keying either channel or frequency, followed by CHAN, MHz, or ENTER,
tunes the instrument – if chan. or freq. is in the active channel table.
CHAN Terminates keypad entry as channel. Switches to channel entry mode.
MHz Terminates keypad entry as frequency. Switches to frequency entry
mode.
ENTER Terminates a keypad entry in the active entry mode (channel or
frequency, as outlined in the top line of the display).
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.