R&S FSQ Signal Analyzer - Rohde & Schwarz

R&S FSQ Instrument Functions
COUPLING
RATIO
RBW / VBW
SINE [1/3]
RBW / VBW
PULSE [0.1]
Analyzer Mode
The SWEEPTIME AUTO function is designed for detectors like sample, max peak or
average. For sweeping with the quasipeak detector a manual setting of the sweep
time should be used at any time.
Remote command: SWE:TIME:AUTO ON
The COUPLING RATIO softkey opens a submenu for selection of the coupling ratios.
RBW / VBW SINE [1/3]
RBW / VBW PULSE [0.1]
RBW / VBW NOISE [10]
RBW / VBW MANUAL
SPAN / RBW AUTO [50]
SPAN / RBW MANUAL
When the default setting is active, i.e. the COUPLING RATIO softkey is deactivated
(not highlighted), the ratio span/resolution bandwidth (SPAN/RBW) is 50 (this corresponds
to SPAN / RBW AUTO [50]) and the ratio resolution bandwidth/video bandwidth
(RBW/VBW) is 0.33 (this corresponds to RBW / VBW SINE [1/3]).
If the ratio RBW/VBW or SPAN/RBW is different from the default setting, the COU-
PLING RATIO softkey is highlighted.
The softkeys RBW/VBW... are selection keys. Only one softkey can be enabled at
any one time. The softkeys are only effective for the VBW AUTO selection in the
main menu.
The softkeys SPAN/RBW... are also selection keys. They are only effective for the
RBW AUTO selection in the main menu.
The RBW / VBW SINE [1/3] softkey sets the following coupling ratio:
video bandwidth = 3 × resolution bandwidth.
This is the default setting for the coupling ratio resolution bandwidth/video bandwidth.
This is the coupling ratio recommended if sinusoidal signals are to be measured.
Remote command: BAND:VID:RAT 3
This setting is only effective for the VBW AUTO selection in the main menu.
The RBW / VBW PULSE [0.1] softkey sets the following coupling ratio:
video bandwidth = 10 × resolution bandwidth or
video bandwidth = 10 MHz (= max. VBW).
This coupling ratio is recommended whenever the amplitudes of pulsed signals are
to be measured correctly. The IF filter is exclusively responsible for pulse shaping.
No additional evaluation is performed by the video filter.
Remote command: BAND:VID:RAT 10
This setting is only effective for the VBW AUTO selection in the main menu.
4.24 Operating Manual 1313.9681.12 - 01