The Spectrum Application
FPC1000
76
User Manual 1178.4130.02 ─ 02
Defining a start and stop frequency
Defining a start a stop frequency is best suited for example for measurements on har-
monics or signals whose exact frequency is unknown. When you define a start and
stop frequency, the center frequency is automatically adjusted to be in the center of
start and stop frequency.
1. Press the "Freq" key to open the frequency menu.
2. Select the "Start Freq" menu item.
The R&S
FPC1000 opens an input field to define the start frequency.
3. Enter a start frequency.
4. Select the "Stop Freq" menu item.
The R&S
FPC1000 opens an input field to define the stop frequency.
5. Enter a stop frequency.
Tip:
If you have entered a stop frequency that is outside the maximum frequency
range, the R&S
FPC1000 sets the stop frequency to the possible maximum.
The R&S
FPC1000 adjusts the horizontal axis according to your input, beginning
with the start frequency and ending with the stop frequency.
The label of the horizontal axis changes from "Center" and "Span" to "Start" and
"Stop".
9.3.3 Channel Tables
Working with channel tables
Almost all transmission systems divide their assigned frequency ranges into channels.
Each channel corresponds to a specific frequency. To keep the handling of such sys-
tems simple, you can use channel tables instead of entering frequencies manually.
The R&S
FPC1000 already comes with an assortment of channel tables that you can
use without doing anything. If you want to test transmission standards that are not lis-
ted, you can also create your own channel tables with the "Channel Table Editor" of
the R&S
InstrumentView software package. To use one of those, you just have to copy
the channel table to the R&S
FPC1000.
For more information, refer to the R&S
InstrumentView user manual.
1. Press the "Freq" key to open the frequency menu.
2. Select the "Frequency Mode" menu item to open the frequency mode.
3. Select the "Channel Downlink" or "Channel Uplink" menu item.
The R&S
FPC1000 opens a dialog to select a channel table.
4. Select one of the available channel tables.
Frequency Configuration
北京海洋兴业科技股份有限公司（证券代码：839145）
www.hyxyyq.com
