RF Technology R150 Instruções de Operação descarregar pdf (Página 6)

Page 6 RF Technology T70/T150

2.1 JP2: Eprom Type 2 TRANSMITTER INTERNAL JUMPER OPTIONS

2 Transmitter Internal Jumper Options

In the following subsections an asterisk (*) signifies the standard (Ex-Factory)

configuration of a jumper.

2.1 JP2: EPROM Type

Condition Position

27C256 2-3 *

27C64 1-2

2.2 JP3: 600 Ohm Line Dc Loop PTT Input

By default, Eclipse exciters can be keyed up by pulling the PTT signal low, or by dc

loop signaling on the audio pair.

This jumper enables, or disables this second method.

Condition Position

DC loop connected (enabled) 1-2 *

DC loop not connected (bypassed)

2-3

2.3 JP4: Audio Input Source Selection

Either the 600Ω or the high-Z balanced inputs may be selected.

Condition Position

600Ω Input

2-3 *

High-impedance Input 1-2

2.4 JP5: 600 ? Termination

Normally the Line Input is terminated in 600 ?. The 600 ohm termination can be

removed by choosing the alternate position.

Condition Position

600? Termination 1-2*

No Termination 2-3

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RF Technology R150 Instruções de Operação Página 6