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5. PROCEDIMENTOS DE CALIBRA��O
5.1- AJUSTE DA FREQUÃ�NCIA INTERMEDIÃ�RIA DE AM (FI-AM) 5.1.1- INSTRUMENTOS: 5.1.2- AM/FM Digimascope (Radio Band) Modelo: MSW-7127 (MEGURO) ou Equivalente. 5.1.3- Fonte de Alimentação Regulada 6V DC. 5.1.4- PREPARAÃ�Ã�O: 5.1.4.1- Ajuste os Controles do Digimascope como segue: 5.1.4.2- Band: AM-IF 5.1.4.3- Cal. Vpp: 100mV 5.1.4.4- ATT dB: 20dB 5.1.4.5- OUTPUT: 62 dB 5.1.5- PROCEDIMENTO: 5.1.5.1- Monte o Circuito da Figura 1.0. 5.1.5.2- Posicione a Chave FUNCTION para Radio. 5.1.5.3- Posicione a Chave BAND na Posição MW. 5.1.5.4- Posicione o Capacitor Variável para Frequência MÃnima. 5.1.5.5- Ajuste a Bobina T2 até Obter a "Curva v" o mais Simétrica e com maior ganho possÃvel, veja figura 1.1 200 mVp.p.
DIGIMARSCOPE FONTE DE ALIMENTA��O 6V PCI RG-8130 0,47µF TP4 TP1 TP2 TP3 GND OUT IN
TP6 TP3 GND FIG 1.0
CASADOR 50�: 75�
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