Vertex Standard VX-4200 service manual RF Unit, Circuit Diagram

ENGESBRA Distribuidor Autorizado Vertex Standard www.radio-vertex.com.br Tel.(11) 2983-1335

RF Unit

Circuit Diagram

–120.5 dBm

RX: 6.4 V

TX: 0 VRX: 6.9 V TX: 0 V

RX: 2.2 V

TX: 0.1 V

RX: 0.8 V

–122.0 dBm TX: 0.1 V

RX: 13.6 V

TX: 13.5 V

–111.5 dBm	RX: 1.0 V	50.85 MHz
	TX: 0 V
		–107.5 dBm
–117 dBm (C1127 removed)
		–120 dBm (C1194 removed)

	RX: 2.0 V
RX: 2.5 V	TX: 0 V
	RX: 3.9 V
TX: 5.8 V
	TX: 0 V

+17 dBm

RX: 0 V

TX: 5.3 V

2.7 V
0.9 V	RX: –4.2 V
	TX: –4.6 V
	RX: –3.3 V
	TX: 0 V

50.85MHz –111 dBm

–117.5 dBm (C1236 removed)

RX: 2.9 V

TX: 0 V

RX: 1.4 V

TX: 0 V

RX: 0.6 V

TX: 0 V

7.2 V

RX: 6.9 V

TX: 7.2 V

50.85 MHz	RX: 4.8 V
–94.1 dBm	TX: 0 V
–99.5 dBm (C1302 removed)

RX: 3.2 V

RX: 0.6 V TX: 0 V

TX: 0 V

0 V	RX: 1.3	V
	TX: 0	V

WIDE: 3.3 V

NARROW: 0 V

WIDE: 0 V

NARROW: 4.5 V

PWR OFF: 0 V

PWR ON: 7.4 V

13.6 V

	RX: 0 V
	TX: 1.6 V
	RX: 0 V
8.0 V	TX: 8.0 V
RX: 7.6 V
TX: 7.4 V
		RX: 4.9 V
		TX: 0 V
	8.0 V
		COMP OFF: 0 V
		COMP ON: 5.0 V
	RX: 0 V
	TX: 8.0 V	RX: 0 V

50 W: 4.3 V

10 W: 2.8 V

RX: 4.9 V

TX: 0 V

0.7 V

RX: 0 V

TX: 0.3 V RX: 3.3 V

TX: 3.4 V

RX: 4.9 V

TX: 0 V

RX: –4.2 V

TX: –4.6 V

5.0 V

RX: –4.9 V

0.1 V

RX: –4.2 V TX: 0 V

RX: –4.9 V

TX: –4.6 V

RX: 0 V

TX: 8.0 V

RX: 7.2 V TX: 6.7 V

5.1 V

RX: 4.6 V

TX: 4.5 V

2.4 V

	5.0 V	2.5 V
4.9 V

5.0 V

1.6 V

4.0 V

1.3 V

	TX: 8.0 V	5.0 V
RX: 0 V		5.0 V
TX: 4.8 V
	RX: 2.0 V
	TX: 0.4 V

TX: –5.0 V

MAIN RX: 4.0 V	0.8 V
SUB RX: 0 V

Q1016

9BAL ADJ: 0 V

DTMF: 5.0 V

PWR OFF: 0.5 V

PWR ON: 5.0 V

COMP OFF: 5.0 V

COMP ON: 0 V

2.5 V 2.5 V

4.5 V @25 °C

2.9 V

MAIN RX: 4.0 V

SUB RX: 0 V

12.9 V 5.0 V

5.0 V

LOCK: 5.0 V

UNLOCK: 0 V

10NOMAL AF: 0 V

FLAT AF: 5.0 V

11FRONT MIC: 0 V

EXT MIC: 5.0 V

Q1014

9PA: 0 V

RX: 0 V

10RX OUT: 0 V

DISC OUT: 5.0 V

11EMPH ON: 0 V

EMPH OFF: 5.0 V

			5.0 V	SHIFT ON: 0 V	MAIN RX: 5.0 V
	5.0 V				SUB RX: 0 V
1.8 V				SHIFT OFF: 5.0 V
		5.0 V	13.6 V
			5.0 V
					RX: 5.0 V
5.0 V					TX: 0.1 V
2.5 V

5.5 V

5.0 V

6.5 V

MUTE: 0 V

UNMUTE: 5.0 V

AF OFF: 5.0 V	PWR OFF: 6.6 V	RX: 5.0 V
AF ON: 0 V	PWR ON: 0 V
		TX: 0 V

HOOK OFF: 5.0 V

HOOK ON: 0 VEMPHASYS OFF: 5.0 V

EMPHASYS ON: 0 V

SHIFT OFF: 5.0 V SHIFT ON: 0 V

5.0 V

OPTION: 0 V

NON OPTION: 5.0 V

RX: 0 V

TX: 4.9 V

RX: 0 V

TX: 4.9 V

INT DTMF: 0 V

OPT DTMF: 5.0 V

0 V 8.0 V

3.5 V

H-1

ENGESBRA Distribuidor Autorizado Vertex Standard www.engesbra.com.br/vertex Tel.(11) 2983-1335