L3Harris Narda SignalShark, Руководство пользователя

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SignalShark User Manual
152
Normal and EMC filter types:
The channel bandwidth (
CBW
) filter type allows you to select a narrow frequency range
with the desired bandwidth from a wideband spectrum and to suppress the remaining
signal components.
Instead of the
CBW filter two EMC filters according to the standards CISPR and MIL-
STD-461-F can be selected.
When selecting an EMC filter, following bandwidths are available:
•
CISPR: 200 Hz, 9 kHz, 120 kHz, 1 MHz
•
MIL: 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, 1 MHz
The available bandwidths also depend on the Fspan setting.
After selecting an EMC filter type, the label CBW is replaced everywhere in the
corresponding views by the label EBW .
Selecting a filter type
You selected the desired view.
1.
Tap the
CBW
/
EBW
button. (The displayed button label depends on the currently
selected filter type.)
The context menu opens.
2. Tap the Filter Type button and select the desired filter type from the dropdown list.
3. Tap the head of the Button bar twice to get back to the main menu (or use the Esc key
instead).
Setting the resolution / EMC bandwidth (RBW / EBW)
You selected the desired view and set the desired filter type.
1. Tap the CBW / EBW button.
2. Set the bandwidth by rotating the rotary knob or enter the required value and select a
unit.
The setting is accepted immediately and the input window is closed.
Enabling/disabling oversampling (CBW only)
You selected the desired view and selected
CBW
as filter type.
1. Tap the CBW button.
The context menu opens.
2. Tap the Oversampling button to switch it On or Off .
3. Press the Esc key to close the context menu.
Setting the measurement time (Meas. Time)
Here you can set the measurement time. The measurement or detector time defines the time
range used by the internal detectors to calculate their values ( +Pk , RMS , -Pk , ...).
To set the measurement time:
You selected the desired view.