DVB-S

1. DVB-S

Filter Type

Choice: Nyquist |Root Nyquist

Default: Root Nyquist

Double-click or use the drop-down menu to select the filter type for DVB-S.

Roll-off Factor

Range: 0 to 1

Default: 0.35

Set the roll-off factor for DVB-S.

Symbol Rate

Range: 100kSymbols/s to 50MSymbols/s

Default: 25.000000 MSymbols/s

Set the symbol rate for DVB-S.

Code Rate

Choice: 1/2 | 2/3 | 3/4 | 5/6 | 7/8

Default: 1/2

Double-click or use the drop-down menu to select the code rate for DVB-S.

2. Payload

Data Source Type

Choice: Demo File| TS File | NULL TS Packet | Pattern |PN9 | PN15 | PN23

Default:Demo File

Double-click or use the drop-down menu to select which type to use as the data source.

File Location

Choice: Local| Instrument

Default: Local

Couplings: Displayed only when the Data Source Type is TS File.

Use "Local" as the File Location and note that "Instrument" is not supported in PXB.

File Name

Couplings: Displayed only when the Data Source Type is TS File.

Click on the right side of the cell to browse your computer and select the TS file.

Sync Insert

Choice: NULL Packet Header (0x471FFF10) | SYNC Byte(0x47) | None

Default: SYNC byte (0x47)

Couplings: Displayed only when the Data Source Type is Pattern, PN9, PN15, or PN23.

Double-click or use the drop-down menu to determine whether a SYNC byte (0x47) or a NULL packet header(0x471FFF10) should be inserted into the test pattern.

Pattern Bits

Couplings: Displayed only when the Data Source Type is Pattern.

Enter the data bits to use in a test pattern.

Packet Stuffing

Choice: On | Off

Default: On

Couplings: Displayed only when the Data Source Type is Demo File or TS File.

Double-click or use the drop-down menu to enable or disable packet stuffing.

PCR Adjust

Choice: On | Off

Default: On

Couplings: Displayed only when the Data Source Type is Demo File or TS File.

Double-click or use the drop-down menu to enable or disable PCR Adjust.

PCR Offset Frequency

Range: 0 to 10 MHz

Default: 0.0

Set the frequency for the PCR offset (the offset is calculated by the sin function).

PCR Offset Amplitude

Range: 0 to 10 us

Default: 0

Set the amplitude for the PCR offset (the offset is calculated by the sin function).

Useful Bit Rate

Couplings: Displayed only when the Data Source Type is Demo File or TS File.

Displays the useful bit rate for the current setting.

Stream Bit Rate

Couplings: Displayed only when the Data Source Type is Demo File or TS File.

Displays the stream bit rate for the current TS file.

3. MultiPath

Multi-path Channel

Choice: Off | 1 Path | 2 Path | 3 Path | 4 Path

Default: Off

Click on the right side of the cell to open the Multi-path Channel dialog box. Use the dialog box to configure up to 4 static paths. For each path, you can set amplitude attenuation (r), time delay (t [ms]), phase offset (q [rad]), and frequency offset (w [kHz]).