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XPT/R2G                                     

 Pag. 

17 

 
 
 

XPT-2G   FRONT  AND  REAR  PANNEL  SETTING 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

N° 

 

FUNCTION 

FUN-COOLER PAPST     Type 614/24 Vdc 

RF OUT – 1 TO 5 WATT 

EXT. BATT. 24 Vdc connector             Pin 1-2  (+)  POS.     Pin 3-4  (-) GND 

LEFT input      Pin 1=GND  Pin 2=L+  Pin 3=L- 

RIGHT input      Pin 1=GND  Pin 2=R+  Pin 3=R- 

External  MPX  input  0 – 12 dBm 

L , R , MPX , SCA1 , SCA2 adjustment 

Mono input impedence choice (600

  or  10k

Pre-emph. value choice (50 or 75 microsec.) 

10 

Nominal value audio input setting for 75kHz of modulation 

11 

Fixed or variable audio input setting (if var.  ±2dB around fixed position) 

12 

SCA1 and SCA2 inputs (0 to 100kHz) 

Summary of Contents for XPR-2G

Page 1: ...XPT R2G Pag 1 XPT R 2G studio transmitter link EL CA Electronic Systems Srl via Adda 5 21057 Olgiate O VA ITALY...

Page 2: ...ower 0 to 4 5W Power resolution setting 0 1W Power control limit setting 1 to 4 5W Power control stability 0 2dB Harmonics emission 60dBc Spurious emission 60dBc Carrier reduction power carrier enable...

Page 3: ...noise referred at deviation of 75kHz 70dB Suppression of 38KHz 70dB Spurious suppression outside band in according to ETS 300 384 Pilot reference for RDS encoder 19 Khz out 1Vpp 2 5 SCA CHARACTERISTIC...

Page 4: ...range 40 to 50 C 2 9 MECHANICAL SPECIFICATION 19 rackmount 485x135x530mm Weight 6kg 2 10 OPTIONS Option A Stereo generator Option B Automatic Audio Level Control Option C Remote Control by GSM Option...

Page 5: ...Squelch threshold 40 100dBm Squelch threshold step 1dB Max rf input signal 20dBm 3 2 SELECTIVITY RF input selectivity 60 dB for 140 Mhz of input frequency 3 dB IF band width static 100kHz 40 dB IF ban...

Page 6: ...L or R decoded and de emph CCIR Vi 40 dBm 65dB Harmonic distortion L or R decoded and de emph Vi 40 dBm 0 2 Connectors XLR 3 5 ALARMS ALARMS OUT one reed contact for carrier detect internal power supp...

Page 7: ...XPT R2G Pag 7 REMOTE CONTROL TO ASK BY GSM TO KNOW Field intensity Frequency Internal voltage supply External battery level Alarms Modulation fine tuning offset control command Squelch control command...

Page 8: ...n keeping this way the modulation very close to the maximum allowed value The corrections take place at very long periods of time the board does not perform the audio compressing limiting functions bu...

Page 9: ...ainst damages and drifts The oscillator directly modulated by the composite signal covers the whole assigned band and synthesized in steps of 50 or 100kHz The reference frequency is obtained by a 10MH...

Page 10: ...ODER additional board allowing the internal encoding of the stereophonic signal b AGC additional board allowing a frequency modulation control c REMOTE CONTROL software for the GSM connection d RF INS...

Page 11: ...is 20Mhz with reference to the tuned frequency and the attenuation of the image frequency is greater than 55dB The next stage is composed of a broadband amplifier with low noise figure NF 3dB and high...

Page 12: ...t everything must be eliminated because it would be a spurious signal in case of retransmission A elliptical filter with 100kHz cut frequency removes the spurious components of the demodulated signal...

Page 13: ...or an oscilloscope for the audio output The rear panel also includes a DB9 connector with alarm signals carrier detect fault etc which can drive a diversity system The receiver can also be powered thr...

Page 14: ...ilter so as to work also when other transmitters working in the other frequency band are near Within the assigned band such filter needs to be tuned on the frequency through a network or spectrum anal...

Page 15: ...tenna Intermodulation with other transmitters is reduced for incresed this last parameter can be putted an insulator option D before the output filter Within the assigned band such filter needs to be...

Page 16: ...XPT R2G Pag 16...

Page 17: ...t Pin 1 GND Pin 2 L Pin 3 L 5 RIGHT input Pin 1 GND Pin 2 R Pin 3 R 6 External MPX input 0 12 dBm 7 L R MPX SCA1 SCA2 adjustment 8 Mono input impedence choice 600 or 10k 9 Pre emph value choice 50 or...

Page 18: ...RS485 PIN NUMBER DB9 9 NC 1 NC 2 Input RS485 3 Input RS485 4 NC 5 GND 6 NC 7 NC 8 NC 16 COM3A RS485 PIN NUMBER DB9 9 NC 1 NC 2 RX 3 TX 4 NC 5 GND 6 NC 7 NC 8 NC 17 COM2 RS232 PIN NUMBER DB9 9 NC 1 ALL...

Page 19: ...XPT R2G Pag 19 22 LF Monitor 23 RS232 COM1 24 Data ENTER key 25 REMOTE connection...

Page 20: ...IGHT output Pin 1 GND Pin 2 R Pin 3 R 4 MPX out 5 DE EMPHASIS on off 6 De emphasis value 75 or 50 microsec 7 Output audio level setting 0 4 1 6 12 dBm 1 NC 2 NC 3 NC 4 ALARM1 out closed or open output...

Page 21: ...NC 2 RX 3 TX 4 NC 5 GND 6 NC 7 NC 8 NC 11 COM2 RS232 PIN NUMBER DB9 9 NC 1 ALL1 2 ALL2 3 GND 4 Field intensity 5 NC 6 12V 7 15V 8 Modulation meter 12 AUX IN OUT For analog remote monitoring PIN NUMBE...

Page 22: ...XPT R2G Pag 22 XPT 2G INTERNAL ADJUSTMENT AND SETTING...

Page 23: ...dj on the out frequency by network analyzer 11 A4GP RF Ampl fuse 1 6A T 12 A4GP Max V rf ampl Adj for 10Vdc on the MGF0906 drain rf ampl 13 A4GP Rf ampl drive curr Adj for 0 2A on the MGF0905 drain 14...

Page 24: ...XPT R2G Pag 24 XPR 2G INTERNAL ADJUSTMENT AND SETTING...

Page 25: ...as Adj for 90dBm RF input signal 6 RX400 Field meas Adj for 50dBm RF input signal 7 AL400 Ex Batt Fuse 2A T 8 AL400 15 Vdc Adj for 15Vdc on the J1 connector on pin 5 9 RF BPF RF filter Adj on the inpu...

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