RDS P132 Quick Installation Manual Download Page 8

 

 
 

3.3

 

Power Supply 

 
The RDS encoder can be supplied from any power supply, which delivers a stabilized DC 12 V voltage and a current of at least 500 mA and no 
more than 2 A. Commonly available switching wall adapters are usually suitable for that purpose. The RDS encoder includes polarity and short-
circuit protection. The central conductor of the power supply connector is positive (+). 
 

Note: After first power-up, there is no need to configure anything to turn on the RDS subcarrier. The RDS encoder will immediately start to 
generate the RDS signal with factory default values (PS: * RDS *, PI: FFFF, RDS level: 4000 mV p-p).

 

 
 

3.4

 

Connecting the RDS Encoder to a Local PC 

 
For the purpose of initial configuration and local control requirements the RDS encoder is equipped with standard USB interface provided on 
the rear panel of the RDS encoder. This connector allows direct connection to a PC using USB cable type A-B.  
 
USB driver must be installed prior to start communicating. Virtual COM port feature provides seamless compatibility with broadcast automation 
software. After successful installation a new COM port will appear in Windows Control Panels / Device Manager. 
 
 

3.5

 

RDS Level Adjustment 

 

Important note:

 There is no universal setting for the RDS level. Due to different input sensitivity of different FM broadcast equipment it's 

necessary to check and adjust the RDS level! 

 
The correct level should be between 2 and 11 % of the audio multiplex signal, measured by oscilloscope in peak-to-peak values on the 
modulator input. Recommended value is such that results in 3.4 kHz deviation of the FM carrier. Don’t forget that the maximum total FM carrier 
deviation with RDS and MPX signal is 75 kHz. It is much easier to use any FM broadcast analyzer for setting the RDS level precisely. 
 

 

 
 
The RDS level can be adjusted after establishing a connection to the encoder, using one of these two methods: 
 
 

In the Windows software 

 
Go to 

Options – Preferences – Control 

and check the item ‘Enable RDS level control’. Now the control is available on the System sheet in the 

main window. 
 
The software allows adjusting the RDS level in range 0.4 to 100 %. In the P132 RDS encoder, that range is proportional to the output level 
range of 15.6 to 4000 mV p-p. Confirm the setting by Store button. 
 
 

In the embedded website 

 
Click on menu item Setup – Signal Control and enter the RDS level directly in mV p-p unit. 
 
 

In terminal, using ASCII command 

LEVEL= 

 
The P132 RDS encoder allows direct adjusting of the RDS level in 256 steps, in range 0 to 255, by assigning a corresponding value to the 
LEVEL parameter. Each step represents approx. 15.6 mV increase. 
 
Desired step count can be calculated as 
 

1

4000

256

level

RDS

Output

LEVEL

 

 
Actual output RDS level (in 

mV p-p

) can be calculated as 

 

4000

256

1

LEVEL

level

RDS

Output

 

The deviation range of the FM carrier caused by RDS/RBDS is 

1.0 to 7.5 kHz

The deviation range of the FM carrier caused by stereo pilot tone is 

6.0 to 7.5 kHz

The overall peak frequency deviation shall not exceed 

75 kHz

Summary of Contents for P132

Page 1: ...P132 RDS Encoder Quick Installation Guide Web http www pira cz rds E mail mail pira cz...

Page 2: ...te Configuration of the RDS Encoder 11 4 2 1 Finding out actual RDS encoder s IP address 11 4 2 2 Remote configuration of the RDS encoder using internal website 11 4 2 3 Remote configuration of the RD...

Page 3: ...orts and Internet Functions http pira cz rds p132com pdf P132 RDS Encoder Technical Manual includes troubleshooting on the last page http pira cz rds p132man pdf Magic RDS Help Magic RDS Guide How to...

Page 4: ...ult value 1 RDSGEN ON RDS generator enabled 1 OFF no RDS output 0 ON 2 LEVEL Output RDS signal level 0 min 255 max 255 4000 mVpp 3 PROGRAM Actual program set selected 1 4 PTY MS DI Program Type code M...

Page 5: ...ol includes internal website referenced as Port 2 and two independent user configurable general purpose ports referenced as Port 3 and Port 4 designated for remote control via TCP or UDP protocol The...

Page 6: ...of connection Use shielded cables e g RG58 terminated by BNC male connectors The cables should be kept short in length Where necessary use a BNC T piece for splitting the signal Stereo encoder FM Tra...

Page 7: ...ted since there is no need of external synchronization or it may be used for the audio signal injection in the case that the FM transmitter has only one input connector 3 2 Hardware Settings 3 2 1 On...

Page 8: ...between 2 and 11 of the audio multiplex signal measured by oscilloscope in peak to peak values on the modulator input Recommended value is such that results in 3 4 kHz deviation of the FM carrier Don...

Page 9: ...d of 12 V Saves about 25 of energy This option is applicable only if the analogue signal Pilot MPX Output does not exceed 5 Vpp Disconnecting of the LCD backlight Saves about 30 of energy The LCD is s...

Page 10: ...s and set up the connection parameters Choose the Serial RS232 USB connection type and select the COM port the RDS encoder is connected to If the RDS encoder is connected via USB and was recognized co...

Page 11: ...HTTP server and a complex web based user interface An internet browser may be directed to the encoder s IP address to bring up the encoder s configuration website To access the embedded website type t...

Page 12: ...th older software or terminal application Due to virtual COM port included in the USB driver the older software can access the RDS encoder the same way like in case of standard serial port Default spe...

Page 13: ...een two programs using appropriate UECP command If only one program has to be on air all the time fill 255 as a DSN for both programs This effectively disables the switching via UECP Program 1 2 PSN S...

Page 14: ...regional The same program is transmitted throughout a large part of the country 4 to F Regional The program is available only in one location or region over one or more frequencies and there exists n...

Page 15: ...separate volume controls one for music and one for speech so that the listener could adjust the balance between them to suit his individual listening habits 4 4 6 AF Alternative Frequencies The Alter...

Page 16: ...ameters like PI default PS text setup enable appropriate text services usually Radiotext 1 Use the Windows control software or the internal website or a terminal application Store all setting into EEP...

Page 17: ...e RT feature supports song artist and song title elements These elements anyway carried in the Radiotext are identified by their class type length and location within the Radiotext The receiver must b...

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