Tektronix RFM150, Instruction Manual

Page: 75 / 278

Making Measurements
RFM 150 Instruction Manual 2–29
Instrument tuning.
The keypad controls instrument tuning. If the knob
is not assigned to REF or VOL, then the knob also controls
instrument tuning (the knob and keypad functions are coupled). The
knob assignments can be deselected by pressing CHAN or MHz
(without a keypad entry), or by pressing the current knob assignment
again. For example, if KNOB REF is selected, pressing F1 again will
deselect it and assign the knob to control instrument tuning.
If the knob is assigned to REF or VOL, the keypad still controls
instrument tuning. (The knob and keypad functions are uncoupled.)
Tuning by preset is not available in this mode.
In meter mode, the channel number at the top of the screen is
followed by a V or an A to indicate whether the instrument is tuned
to a visual or an aural carrier.
Volume. In meter mode, FM audio can be monitored. Pressing F2
assigns the knob to control the speaker volume, from 0% to 100%. A
beep will sound if you exceed either end of the range. Note that the
instrument must be tuned to an aural carrier in order to monitor
audio.
Resolution bandwidth.
Pressing F4 toggles the resolution bandwidth
between 30 kHz and 300 kHz. Control of RBW can be used in
2-carrier sound systems to resolve the aural carriers.
Detection. Pressing F5 toggles between peak and average detection.
Exit. To change to another menu, press the new menu key. Pressing
certain menu keys will reassign the function keys while leaving the
meter mode display on screen (for example, pressing STORE to store
a measurement result). Press ESC to exit the other menu and restore
the meter mode function keys. To change to another level measure-
ment mode, press LEVEL.
Making Measurements
RFM 150 Instruction Manual 2–29
Instrument tuning.
The keypad controls instrument tuning. If the knob
is not assigned to REF or VOL, then the knob also controls
instrument tuning (the knob and keypad functions are coupled). The
knob assignments can be deselected by pressing CHAN or MHz
(without a keypad entry), or by pressing the current knob assignment
again. For example, if KNOB REF is selected, pressing F1 again will
deselect it and assign the knob to control instrument tuning.
If the knob is assigned to REF or VOL, the keypad still controls
instrument tuning. (The knob and keypad functions are uncoupled.)
Tuning by preset is not available in this mode.
In meter mode, the channel number at the top of the screen is
followed by a V or an A to indicate whether the instrument is tuned
to a visual or an aural carrier.
Volume. In meter mode, FM audio can be monitored. Pressing F2
assigns the knob to control the speaker volume, from 0% to 100%. A
beep will sound if you exceed either end of the range. Note that the
instrument must be tuned to an aural carrier in order to monitor
audio.
Resolution bandwidth.
Pressing F4 toggles the resolution bandwidth
between 30 kHz and 300 kHz. Control of RBW can be used in
2-carrier sound systems to resolve the aural carriers.
Detection. Pressing F5 toggles between peak and average detection.
Exit. To change to another menu, press the new menu key. Pressing
certain menu keys will reassign the function keys while leaving the
meter mode display on screen (for example, pressing STORE to store
a measurement result). Press ESC to exit the other menu and restore
the meter mode function keys. To change to another level measure-
ment mode, press LEVEL.