User's Manual Part 3

ManualsBrandsElettronika ManualsElectronics3.5 kW Analog TV Broadcast Transmitter

105

AMPLIFIER INTERFACE SCH0221AR0

Component layout SCH0221AR0

COMPONENT LIST SCH0221AR0

Part Name/Number Description Qty. Comps.

CC 100nFAVX 01065A 01065A CERAMIC COND 4 C1-4

CE 100uF100V 01795B ELETT. COND. 1 C8

CE 100uF50V 01795 01795 ELETT. COND. 1 C6

CE 10uF35V-S 01778A 01778A ELETTR SMD COND 2 C5, C7

D 1N4007 03009 03009 DIODE 1 D1

D 6CWQ10FN 03026 SMD DIODE SCHOTTKY 3,5A 3 D7-9

IC LM317HV 04340A INTEG CIRCUIT 2 IC1-2

J FC-16P 02701-02700 02701+02700 PCB CONNECTOR POL 1 J20

J SCREWCONN2 02853 02853 PCB SCREW CONNECTOR 2 J19, J24

J SCREWCONN3 02860 02860 PCB SCREW CONNECTOR 1 J18

J TESTP1.3mm 07913 07913 TEST POINT 17 J1-17

JU JUMP2 02739-02742 02739+02742 MASCHIO PAN2 3 JP1-2, JP4

JU JUMP3 02707-02742 02707+02742 MASCHIO PAN3 1 JP3

R 0R33-1W-S 00380 RES 1W 5% SMD 2512 2 R1-2

R 100K-S 00065A 00065A RES 1/4W 5% SMD 1206 1 R7

R 10K-S 00053A 00053A RES 1/4W 5% SMD 1206 1 R6

R 220R-S 00033A 00033A RES 1/4W 5% SMD 1206 1 R4

R 270R-S 00034A 00034A RES 1/4W5% SMD 1206 1 R3

R 4K7-S 00049A 00049A RES 1/4W 5% SMD 1206 1 R5

TR BC856 03455 03455 PNP SMD TRANSISTOR 1 TR1

Summary of content (14 pages)

PAGE 1
AMPLIFIER INTERFACE SCH0221AR0 Component layout SCH0221AR0 COMPONENT LIST SCH0221AR0 Part Name/Number Description Qty. Comps. CC 100nFAVX 01065A CE 100uF100V CE 100uF50V 01795 CE 10uF35V-S 01778A D 1N4007 03009 D 6CWQ10FN IC LM317HV J FC-16P 02701-02700 J SCREWCONN2 02853 J SCREWCONN3 02860 J TESTP1.3mm 07913 JU JUMP2 02739-02742 JU JUMP3 02707-02742 R 0R33-1W-S R 100K-S 00065A R 10K-S 00053A R 220R-S 00033A R 270R-S 00034A R 4K7-S 00049A TR BC856 03455 01065A CERAMIC COND 01795B ELETT. COND.
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106
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MAINS DISTRIBUTION BOARD SCH0265AR0 Component layout SCH0265AR0 COMPONENT LIST SCH0265AR0 Part Name/Number Description Qty. Comps. CC 2nF2 2kV 01045A CNV AC-DC ATC-12S D 1N4148 03001 DL LEDG3 03053 J CON HD515V/05-4PVE J CON HD515V/05-5PVE R 2K7 0046 RL 40.31.
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108
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INTERFACE BOARD SCH0288AR1 Component layout SCH0288AR1 COMPONENT LIST SCH0288AR1 Part Name/Number Description Qty. Comps.
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110
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SP500-27-DI SWITCHING POWER SUPPLY E0012 SPECIFICATION MODEL SP-500-27 (E0012 Code) SP-500-48 (E0013 Code) DC Output Voltage Output Rated Current Output Current Range Ripple & Noise (p-p) DC Output Power Efficiency DC Voltage Adj. Over V. Protection Input Voltage Range Input Frequency Power Factor Overload Protection 27Vdc 18A 0-18A 200mVp-p 486W 87% 24-30V 31V-36.5V 88-264Vac 47-63Hz 0.95/100-240Vac 105%-135% Type: Foldback current limiting Recovery: Auto > =70°C Output Shutdown Temp.
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UHF 5/10kW ANALOG TV FILTER Code 06663 Suitable for use in solid state A-AB class transmitter, in common amplification, to eliminate out of band products in all standard frequencies. Available connectors: - EIA 1 5/8 - RIGID LINE 1 5/8 - EIA 3 1/8 opposite or parallel position. TECHNICAL CHARACTERISTICS Configuration Max power output Frequency range Insertion loss (Video c.
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CALIBRATION PROCEDURE In order to calibrate PBN153/44, a double-track Network Analyser is needed, in order to visualize the frequency response of the passing and reflected signals. - Calibration procedure from 470MHz to 666MHz 1. Extract the coupling 5 (Fig. 1) until it stops. 2. Insert the couplings 3, letting about 5mm out. 3. Connect the filter to the Network Analyser marking the input. Select the frequency of the desired channel centre and set a SPAN of 50MHz. 4.
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Fig. 2 5. Set a SPAN of 20MHz and act alternatively on: - Interstage coupling 3 (rise and lower); - IN/OUT couplings 4 (turn); - Tuning 1 and 2 (rise and lower); to obtain a bandwidth of 7-8MHz and an adaptation of about 25dB, composed by four peaks (Fig. 3). Fig. 3 6. Insert the coupling 5 (Fig. 1) to set the position of the notch attenuation on the desired frequencies (Fig. 4) (5.5MHz and +11MHz or 4-5MHz and +9MHz).
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Fig. 4 7. The adaptation has moved; it can be adjusted by acting on the filter as per point 6, correcting each time the attenuation tuning by means of the coupling 5, until a frequency response like that in the example (Fig. 5) is obtained. Fig. 5 8. Once the calibration is complete, the machanical movement during the locking stage will have to be compensator for, because a variation of the adaptation may occur. It only takes to extract slightly the tuning which is being fastened.
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- Calibration procedure from 66MHz to 860MHz 1. Extract the coupling 5 (Fig. 1) until it stops. 2. Extract the couplings 3 making sure not to short-circuit them. 3.Connect the filter to the Network Analyser, marking the input. Select the frequency of the desired centre channel and set a SPAN of 50MHz. 4. Act on the tuning rods 1 and 2 until the curve of the band-pass appears in the centre of the screen and adjust it by means of the coupling 3 to obtain a width of about 10MHz (Fig. 2).
PAGE 13
Fig. 2 5. Set a SPAN of 20MHz and act alternatively on: - Interstage couplings 3 (rise and lower); - IN/OUT couplings 4 (turn); - Tuning 1 and 2 (rise and lower); to obtain a bandwidth of 7-8MHz and an adaptation of about 25dB, composed by four peaks (Fig. 3). Fig. 3 6. Use the coupling 5 (Fig. 1) to set the position of the notch attenuation on the desired frequencies (Fig. 4) (5.5MHz and +11MHz or 4.5MHz and +9MHz).
PAGE 14
Fig. 4 7. It is possible to note that, by tuning the notch attenuation as described in point 6 above, the adaptation has moved. It can be adjusted by acting on the filter as per point 6, correcting each time the tuning of the notch attenuation by means of the coupling 5, until a frequency response like the one in the example (Fig. 5) is obtained. Fig. 5 8.