L3Harris Narda SignalShark, Руководство пользователя

Страница: 165 / 231

Horizontal Scan
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Selecting the mode of the rotary wheel (Rotary Mode)
You can select following modes:
•
Digit / Fstep: changes Ftune by digits or the selected Fstep
•
Fast Tune: changes Ftune by rotating the wheel dynamically (rotating the wheel long and
fast accelerates the change)
• Transmitter: changes Ftune by selecting a transmitter from the transmitter table
1. Tap the Rotary Mode button.
2. Select a mode from the dropdown window and close the window using the X button.
Setting the channel / EMC bandwidth (CBW / EBW)
Here you can do the following:
1. Select the current filter type CBW or EBW (CISPR, MIL-STD-461-F).
2. Set the channel bandwidth ( CBW ) or EMC bandwidth ( EBW ).
3. Select Oversampling .
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.