Rohde & Schwarz R&S SMB100B - Page 552

Remote control commands
R&S
®
SMB100B
552User Manual 1178.3711.02 ─ 08
To retrieve information, send the query [:SOURce]:STEReo:DIRect? "command
string".
All parameters are string parameters. Send them in quotation marks ("). These charac-
ters are part of the full direct command.
Before using the stereo coder, activate stereo modulation of the R&S SMB100B with
the command SOURce:STEReo:STATe ON. The SCPI command
SOURce:STEReo:AUDio:FREQuency sets the LF-Generator frequency.
SOURce:STEReo:MMF limits the modulation frequency. These commands have no
counterpart in the direct commands.
12.21.1 Programming examples
Example: Alternative frequency lists (AF)
Alternative frequency lists can be transmitted in two ways.
●
Method A:
Set the frequencies of an AF list one after the other; the frequency currently trans-
mitted has to be specified as the first frequency.
●
Method B:
Set the frequencies of an AF list in pairs, where each pair contains the frequency
currently transmitted and an alternative frequency.
Enter the frequency pairs in ascending order.
Choose descending order only if the alternative frequencies belong to different
regions or are used to broadcast different programs at different times.
A maximum of five AF lists can be generated. For type A lists, max. 25 frequencies per
list can be specified, for type B lists, max. 12 frequencies per list.
Consider the following:
●
Do not combine method A and B.
●
You can generate a maximum of five AF lists.
For type A lists, you can specify up to 25 frequencies per list; for type B - up to 12.
●
There is no validity check for the frequency lists. Make sure that the syntax is cor-
rect.
// Method A
// Generate a new alternative frequency list
STEReo:DIRect "AF=N,87.6,87.7,87.8"
// Set the group sequence
STEReo:DIRect "GS=0A,14A"
// The group sequence must contain group 0A
// The alternative frequencies are now transmitted in group 0A
// Add another alternative frequency list
STEReo:DIRect "AF=+,88.6,88.7,88.8"
Direct commands for the stereo/rds coder option R&S
SMBB-B5