Nautel NV30LT-N, Operation & Maintenance Manual

Page: 79 / 226

NV30LT-N OPERATIONS & MAINTENANCE MANUAL OPERATING THE TRANSMITTER
VERSION 0.1 2015-03-01 PAGE 3.2.61
 Radio Text: Most RDS radios can receive short messages that may include information about
the presenter, station or program you are listening to. (e.g., a web address for the station).
You can enter a radio text up to 64 characters scroll. This selection applies to internal data
sources only.
 PTY: this coding of up to 32 (0 to 31) pre-defined programme types allows users to find similar
programming by genre. This selection applies to internal data sources only.
 PTYN (programme type name): this field can be used for detailed description of the PTY by 8
digits. Example: if the PTY is 4 (Sport) a PTYN like "Cycling" could be transmitted. The PTYN is
intended for displaying additional information only and cannot be used for automatic station
tuning like the PTY. The PTYN is optional and not obligatory. This selection applies to internal
data sources only.
 Music/Speech: select Music (1) or Speech (0). This selection applies to internal data sources
only.
 Traffic Info: select None, TA (Traffic Announcement), TP (Traffic Programme) or TA+TP. The
receiver can often be set to pay special attention to this flag and, for example, stop the tape/
pause the CD or retune to receive a traffic bulletin. The TP flag is used (set to 1) to allow the
user to find only those stations that regularly broadcast traffic bulletins whereas the TA flag is
used (set to 1) to signal an actual traffic bulletin in progress. These flags are set to 0 if they are
not being used for traffic information. This selection applies to internal data sources only.
 Alternate Frequencies: select None or 1 through 6. This allows a receiver to re-tune to a
different frequency providing the same station information when the first signal becomes too
weak. This is often utilized in car stereo systems. This selection applies to internal data
sources only.
 Artificial Head (bit 1 of Decoder Information, see NOTE below): select Yes (1) or No (0) select
Yes or No. This selection is a decoder identification operating mode flag.
 Compression Flag (bit 2 of Decoder Information, see NOTE below): select Yes (1) or No (0).
This selection is a decoder identification operating mode flag.
 Dynamic (bit 3 of Decoder Information, see NOTE below): select Yes (1) or No (0). This
selection is a decoder identification operating mode flag.
 Stereo (bit 0 of Decoder Information, see NOTE below): select Yes (1) or No (0). This selection
is a decoder identification operating mode flag.
NOTE
:
Artificial Head, Compression Flag, Dynamic and Stereo are part of the DI (Decoder Information)
data (see front panel UI editing screens on
Figure 3.2.61 on page 3.2.78
). RDS Data is provided as a
single-digit hex input between 0 and F, that encodes the flags for the four settings as a 4-bit code. For
example: hex number 3 is bit-repesented by 0011, from bit 3 on the left to bit 0 on the right. This
number is decoded to mean Stereo = Yes (bit 0=1), Artificial Head = Yes (bit 1=1), Compression = No
(bit 2=0) and Dynamic = No (bit 3=0).