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Skanti TRP 5000, Инструкция по эксплуатации

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Skanti TRP 5000 Скачать руководство пользователя страница 98

 

 

 

7.10

 

/232\ Realignment of 1.4 MHz (1.973 MHz) EXCITER  

 

Measuring equipment:  

 

Oscilloscope 

having a sensitivity better than 50mV/div. Input impedance 

10Mohm in parallel with 20pF or less.  

 
7.10.1  Realignment of 232R6, Microphone Sensitivity:  
 

The microphone sensitivity potentiometer is normally fully clockwise, 
corresponding to full sensitivity. When the transmitter is installed 
where there is a high acoustic noise level it can be advantageous to 
reduce the sensitivity by turning the potentiometer half or fully 
anticlockwise. This has the effect of reducing the back- ground noise 
coming up in speech pauses. The compressor ensures that the transmitter 
is still fully modulated by the speech signal.  

 
7.10.2 Realignment of 232R15:  
 

Control settings: SUPPLY switch: STAND BY  

 

1.  Connect oscilloscope to test point 232TP7. 
 
2.  Unsolder brown lead to terminal 232-4.  
 
3.  Set potentiometer 232R15 to the middle of its range.  
 
4.  Press TUNE button and adjust sensitivity of oscilloscope to give a 

full screen peak to peak deflection.  

 
5.  Re-solder brown lead to terminal 232-4.  
 
6.  Press TUNE button and adjust 232R15 to give exactly the same 

deflection on oscilloscope as before.  

 

7.10.3  Realignment of 232R42, Balance:  
 

Control settings:  SUPPLY switch: 

STAND BY 

 

MODE switch: 

A3J  

 

BAND switch-: 

not 2182 kHz  

 

1.  Connect oscilloscope to test point 232TP6  
 
2.  Adjust potentiometer 232R42 for minimum deflection on oscilloscope.  

 
7.10.4  Realignment of 232R46, Carrier Level  
 

Control settings:  SUPPLY switch: 

STAND BY 

 

MODE switch: 

A3H  

 

1.  Connect oscilloscope to 232C42 / 232L6  
 
2.  Press TUNE button and adjust sensitivity of oscilloscope to give a 

full screen peak to peak deflection. 

  
3.

 

Un-solder grey lead to terminal 232-13. 

 
 
 

Содержание TRP 5000

Страница 1: ...rminal Strips 3 11 Programming of MEMOFIY 238 General 3 12 Ordering Programmed PROM s 3 13 Instruction for use of PROGRAMMING IINIT 241 3 14 Adjustment of Antenna Tuning 3 1 3 1 3 1 3 1 3 1 3 2 3 3 3...

Страница 2: ...ealignment of 1 4 MHz EXCITER 7 11 233 Realignment of RF TRANSLATOFT 7 12 234 Realignment of CONTROL CIRCUIT AND TONE GENERATORS 7 13 235 Realignment of HARMONIC GENERATOR 7 14 236 Realignment of VCO...

Страница 3: ...tenna relay Initial tab settings Lower GT band Initial tab settings Upper CT band Initial tab settings 4 6 MHz bands Initial tab settings 8 16 MHz bands Initial tab settings 22 25 MHz bands T 5000 Tun...

Страница 4: ...ter Oscillator 241 Programming Unit 250 T 5000 Wiring diagram 251 Driver 1252 Meter Circuit 1253 Band indicator 254 Voltage Regulators 260 P 5000 24 V DC Power Pack Wiring Diagram 261 Converter driver...

Страница 5: ...ter is fully synthesised and provides keyboard selection of up to 256 pre programmed frequencies which can be freely distributed in the maritime frequency bands Silicon transistors and integrated circ...

Страница 6: ...1 1...

Страница 7: ...1 2...

Страница 8: ...he transmitter is automatically set to FULL POWER SIMPLEX independent of the setting of the POWER switch 2 2 Tuning to 2182 kHz 1 Set SUPPLY switch to TRANSMIT 30 seconds after switching on the transm...

Страница 9: ...2 1...

Страница 10: ...mission is inhibited if the mode setting does not correspond with the frequency selected On radiotelephone frequencies the transmitter can be keyed only in the modes A3A A3J A3H and TRANSMIT ALARM On...

Страница 11: ...tically selected independent of the POWER switch setting and if at the same time the MODE switch is set to TRANSMITALARM the transmitter is automatically set to full power The MODE switch has eight po...

Страница 12: ...2 3...

Страница 13: ...an un programmed Frequency No is selected the display will start to flash indicating that transmission is not possible 2 4 6 The DIMMER controls the intensity of the FREQUENCY NO display 2 4 7 The TU...

Страница 14: ...2 4...

Страница 15: ...swing VA Check of anode DC voltage Vs1 Check of screen grid voltage of valve no 1 Vs2 Check of screen grid voltage of valve no 2 VG Check of grid bias I1 Check of cathode current of valve no 1 I2 Chec...

Страница 16: ...2 5...

Страница 17: ...the built in stops permit The cables may be unplugged and the individual units removed entirely from the cabinet after having released the stop latches This is done by pushing the unit slightly back i...

Страница 18: ...e power pack input lead Fuse rating is given on the P 5001 diagram 3 5 Earth Connections As the transmitter earth connection is always a part of the total antenna system it is of the utmost importance...

Страница 19: ...3 2...

Страница 20: ...This earth bolt must not be used for earthing other equipment and the receiver earth wire shall be as far as possible from the transmitter copper strap 3 5 2 2 Wooden Ships A flexible 2 5 MM2 earth wi...

Страница 21: ...3 3...

Страница 22: ...he radio room The feed through insulator should be located in such a way that the distance between the insulator and the transmitter antenna terminal is as short as possible to avoid losses and radiat...

Страница 23: ...cted to the receiver only when the SUPPLY switch is at RECEIVE ONLY and STAND BY An audio power of 5 watts is available into a 4 ohms load This power can be shared between several loudspeakers if so d...

Страница 24: ...he T5000 is only mounted and wired on special order but a BAND switch wafer which can be wired to give the BAND position is always supplied as an integral part of the Transmitter Power Amplifier PROM...

Страница 25: ...3 6...

Страница 26: ...table 3 1 1 1 can be used in the MEMORY 238 3 11 4 The MEMORY 238 controls the Band Indicator of Transmitter Power Amplifier This implies that the distribution of the coastal telephone frequencies in...

Страница 27: ...3 7...

Страница 28: ...is by connecting a frequency counter to the output BNC socket 231SK7 of the Exciter The output socket is the one carrying no colour code It is normal connected to the Transmitter Power Amplifier via a...

Страница 29: ...Al A2H or Fl 0 1 Table 3 12 3 3 12 5 Calculate the synthesiser frequency fs from the transmitting frequency ft as shown in tabie3 12 4 Observe that the transmitting frequency ft is the carrier freque...

Страница 30: ...3 9...

Страница 31: ...0 01 00 Table 3 12 6 3 12 8 In order to store this information 3 PROM s must be programmed at the same input address These 3 PROM s are labelled A B and C The total amount of information should now be...

Страница 32: ...3 10...

Страница 33: ...ynthesiser frequency can be calculated from table 3 12 4 fs 4170 0KHz 1400 0KHz 5570 0KHz By use of table 3 12 5 and table 3 12 6 the associated codes can be found Digit Number Code 1 MHz 100 KHz 10 K...

Страница 34: ...3 11...

Страница 35: ...3 0 4 The synthesiser frequency can be calculated from tabie 3 12 4 fs 3550 0KHz 1400 0KHz 4950 0KHz By use of table 3 12 5 and table 3 12 6 the associated codes can be found Digit Number Code 1 MHz...

Страница 36: ...kage of each PROM indicating in which column and socket A B or C it is to be mounted 3 12 14 Concerning the programming of Frequency No zero some considerations are to be made refer to paragraph 3 11...

Страница 37: ...3 13...

Страница 38: ...ency otherwise it is self explanatory 3 13 6 It must be decided whether it is to be a radiotelephone frequency RT A3H A3A or A3J or a wireless telegraph frequency WT Al A2H or Fl 3 13 7 Furthermore th...

Страница 39: ...3 14...

Страница 40: ...still possible to Disable the Frequency No This is done as follows 3 13 21 Adjust the MHz slider so that a black field appears in the window two holes will now appear in the other window now push and...

Страница 41: ...3 15...

Страница 42: ...ust be selected 6 Place the Programming Pin in one of the holes in the window of the tool beginning from the right If this hole position is un programmed the lamp of the red pushbutton will extinguish...

Страница 43: ...w accessible when the SUPPLY switch is in position TRANSMIT The various components of the antenna tuning circuit are selected by means of the drum switch which can be programmed individually for each...

Страница 44: ...transition frequency depends on the antenna The shunt capacitance in parallel to the P A valves is pre set on each band by means of wafers 13 14 end 15 The output capacitance can be selected between...

Страница 45: ...r 24 if necessary in combination with one or both of the shortening capacitors 3 14 4 5 If Level reading is too high even with none of the capacitors l to 9 connected insert the coil at wafer 25 on th...

Страница 46: ...MOUNTING OF TRP 5000 3 21...

Страница 47: ...TRP 5000 CABINET STANDARD VERSION...

Страница 48: ...3 22...

Страница 49: ...TRP 5000 CABINET ALL OPTIONAL TERMINALS STRIPS INSTALLED 3 23...

Страница 50: ...meter 2 x 25 mm2 NOTE 2 AN AUDIO POWER OF 5 WATTS IS AVAILABLE INTO A 40 OHMS LOAD THIS POWER CAN BE SHARED BETWEEN SEVERAL LOUDSPEAKERS IF S0 DESIRED THE BUILT IN SPEAKER IN THE POWER PACK HAS AN IMP...

Страница 51: ...TRP 5000 OUTPUT TERMINAL STRIP B OPTIONAL Terminal strip to be mounted on cabinet back wall 3 24...

Страница 52: ...TRP 5000 INPUT TERMINAL STRIP C OPTIONAL Terminal strip to be mounted on cabinet back wall...

Страница 53: ...3 25...

Страница 54: ......

Страница 55: ...Installation of external antenna relay for integral receiver simplex one antenna installation or extra receiver 3 27...

Страница 56: ......

Страница 57: ......

Страница 58: ......

Страница 59: ......

Страница 60: ......

Страница 61: ...S2 VG I1 I2 VD Freq KHz not 2182 Level readings are taken with POWER switch in position MEDIUM POWER SIMPLEX and Tune button pressed ANTANNA CURRENT readings are taken with POWER switch in position FU...

Страница 62: ...992 230 0 2 3 33...

Страница 63: ...PROGRAMMING WORK SHEET Transmitting Frequency KHz Frequency Correction KHz Freq No Band Mode Synthesizer Frequency KHz 992 221 71 3 34...

Страница 64: ...minute period Modulation characteristic Within 6 dB from 350 Hz to 2700 Hz Alarm Generator A two tone alarm generator is incorporated Supply Voltage 24 V battery with P5000 Power Pack or 110 115 120...

Страница 65: ...4 1...

Страница 66: ...the respective lids Board 239 is mounted behind the front panel This board and the motherboard 231 become accessible when the front panel is tilted forward this is possible after removal of the two u...

Страница 67: ...bands by mixing it with fixed injection frequencies The mixer is followed by switchable band pass filters and an amplifier 5 3 4 In the Al A2 Hand TRANSMIT ALARM modes the AF signal is supplied from t...

Страница 68: ...tor 240 or 240a is available for mounting in the Exciter 5 4 Circuit Description Exciter E 5000 or E 5001 5 4 1 232 1 4 MHz or 1 973 MHz EXCITER The AF input signals are connected to the compressor th...

Страница 69: ...the output the desired control signals corresponding with the wanted mode The Mode Selector controls the input selector and the mode setting of the 1 4MHZ or 1 973 MHz Exciter 232 via the respective...

Страница 70: ...nd its associated lock detector located on this printed circuit board The reference frequency of 1 4 MHz for this loop is derived from the TCXO in order to accomplish the necessary degree of frequency...

Страница 71: ...with the content of the data block A As long as B is less than A the division ratio of the four programmable counters are equal to the BCD 9 s complement of their four associated data blocks When B be...

Страница 72: ...ncy No s from 32 63 and so on see table 3 12 1 From board 239 the binary encoded Frequency No selects via 5 6 IC1 one of 32 words and via IC2 one of eight columns 5 4 8 339 DISPLAY AND KEYBOARD When a...

Страница 73: ...e frequency by approx 2 10 6 and in the other case by changing the factory selected resistor The resistor should be selected at 25 C ambient temperature to give a TCXO output frequency offset from the...

Страница 74: ...n 5msec out of 100msec during the period of time where no programming takes place This pulsed operation is controlled by a clock pulse generated by IC1 openin 0 and closing via 214 1G3 and 216 ICS the...

Страница 75: ...TR1 and TR2 in parallel amplifies the signal which is then applied to a class a push pull stage consisting of the transistors TR3 and TR4 The DC current of these transistors is set by means of the va...

Страница 76: ...5 10...

Страница 77: ...f the NPN darlington transistor 250 TR1 in connection with the zener diode D4 and resistor R15 When the voltage of the filament reaches 6V the transistor starts to conduct and shunts the filament by w...

Страница 78: ...5 11...

Страница 79: ...or ensures that the capacitors after the relay are always charged before the contacts are closed The LT converter is composed of transistors TR10 and TR12 and the square wave output signal is coupled...

Страница 80: ...rd contains also the keying relay RL1 for the complete TRP5000 equipment The contacts of the relay are used to disconnect the speaker built into the Power Pack and to key the grid bias of the P A valv...

Страница 81: ...d D6 followed by a zener diode stabiliser The stabilised voltage is negative with respect to chassis and is further stabilised in the Transmitter Power Amplifier to be used as grid voltage To avoid th...

Страница 82: ...5 13...

Страница 83: ...in the Transmitter Power Amplifier is also obtained from transformerT2followed by rectifiers and a voltage stabiliser Included in the Power Pack is also a loudspeaker connected to the associated rece...

Страница 84: ...5 14...

Страница 85: ...ollowed by a voltage stabiliser having a nominal output voltage of 28V An output voltage from the transformer 265 T1 is fed to bridge rectifier D3 D4 D7 and D8 followed by a zener diode stabiliser The...

Страница 86: ...ANTENNA CURRENT reading Compare the readings with the readings listed in the TUNING CHART f the two readings differ appreciably from the listed values and the transmitter is otherwise functioning nor...

Страница 87: ...6 1...

Страница 88: ...ER switch set to DUPLEX FULL and TUNE button not pressed valve current readings I1 and I2 in the A3J mode un modulated will be approx 1 4 and in the A3H mode un modulated approx 2 3 6 5 Replacement of...

Страница 89: ...6 2...

Страница 90: ...ding in CHECK SWITCH position Va High Tension Fuse 1700V to anodes Fuse Ratings 24V DC Power Pack P5000 Table 6 5 1 Fuse Rating Designation Front Panel Fuses from left to right Symptom if fuse is blow...

Страница 91: ...6 3...

Страница 92: ...faulty circuit boardson the basis of DC measurements Since not all types of faults can be traced by means of DC measurements supplementary AC measurements with an oscilloscope may be required see sec...

Страница 93: ...7 1...

Страница 94: ...e valves The adjustment procedure following a valve replacement must be performed as follows 7 8 2 Adjustment of Quiescent Current The quiescent current of each valve must be 75mA and may be measured...

Страница 95: ...7 2...

Страница 96: ...o FULL and TUNE button pressed This corresponds to a deflection of between 3 0 and 3 2 on the built in meter with the CHECK SWITCH pulled in position 11 and 12 Note that maximum current is obtained wh...

Страница 97: ...7 3...

Страница 98: ...ings SUPPLY switch STAND BY 1 Connect oscilloscope to test point 232TP7 2 Unsolder brown lead to terminal 232 4 3 Set potentiometer 232R15 to the middle of its range 4 Press TUNE button and adjust sen...

Страница 99: ...7 4...

Страница 100: ...horting strap 7 11 233 Realignment of RF TRANSLATOR Measuring equipment Oscilloscope having a sensitivity better than 50mV div Input impedance 10Mohms in parallel with 20pF or less Frequency range up...

Страница 101: ...7 5...

Страница 102: ...quency 1 Remove strap between terminals 233 6 and 233 7 and connect signal generator between same two terminals 233 7 is graund 2 Connect receiver input via a coaxial cable to test point 233TP3 thraug...

Страница 103: ...L20 for minimum signal 7 11 7 Realignment of Band Pass Filters 4 25 MHz Control Settings SUPPLY switch STAND BY MODE switch A3J POWER switch DUPLEX BAND switch Not 2182 kHz 1 Connect signal generator...

Страница 104: ...r board 2 Connect frequency counter between terminals 234 32c arid 234 4c ground 3 Connect the adjustment terminals marked 1 and 2 together 4 Depress and release ALARM START pushbutton 5 Adjust 234 T1...

Страница 105: ...7 8...

Страница 106: ...tion 8 Select a frequency in the 22MHz band and adjust 235L5 for the same deflection 9 Select a frequency in the 16MHz band and adjust 235L6 for the same deflection 10 Select a frequency in the 12MHz...

Страница 107: ...7 9...

Страница 108: ...oint 2 above 7 15 240 Realignment of MASTER OSCILLATOR Measuring equipment Oscilloscope having an input impedance of 10Mohms in parallel with 20PF or less Control settings SUPPLY switch STAND BY 1 Con...

Страница 109: ...1 1 A2H 14 0 1 1 1 0 A3H 1 1 1 1 1 0 1 1 A2H 15 0 1 1 1 1 Transmit Alarm 1 1 1 1 1 0 1 1 A2H 16 1 0 0 0 0 A2H 0 1 0 0 1 1 1 1 A3H 17 1 0 0 0 1 A1 0 1 0 0 1 1 1 1 A3H 18 1 0 0 1 0 F1 0 1 0 0 1 1 1 1 A3...

Страница 110: ...7 11...

Страница 111: ...0 1 1 0 1 1 1 1 1 0 0 0 1 14 0 1 1 1 0 1 1 1 1 0 0 0 1 15 0 1 1 1 1 1 1 1 1 0 0 0 1 16 1 0 0 0 0 A 1 1 1 1 0 0 0 1 17 1 0 0 0 1 B 1 1 1 1 0 0 0 1 18 1 0 0 1 0 C 1 1 1 1 0 0 0 1 19 1 0 0 1 1 D 1 1 1 1...

Страница 112: ...7 12...

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