Transmitter Internal J Umper Options; Jp2: Eprom Type; Jp4: Audio Input Source; Jp5: 600 ¿ Termination - RF Technology Eclipse Series Operation And Maintenance Manual

2 TRANSMITTER INTERNAL JUMPER OPTIONS
2 Tr ansmitter Inter nal J umper Options
In the following subsections an asterisk (*) signifies the standard (Ex-Factory) configuration
of a jumper.
2.1 J P2: EPROM Type
Condition
27C256
27C64
2.2 J P3: 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
signalling on the audio pair.
This jumper enables or disables this second method.
Condition
dc loop connected (enabled)
dc loop not connected (bypassed)
2.3 J P4: Audio Input Sour ce Selection
Either the 600Ω or the high-Z balanced inputs may be selected.
Condition
600Ω Input
High-impedance Input
2.4 J P5: 600 ¿ Ter mination
Normally the Line Input is terminated in 600 ¿ . The 600 ohm termination can be removed
by choosing the alternate position.
Condition
600¿ Termination
No Termination
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RF Technology T800
Position
2-3 *
1-2
Position
1-2 *
2-3
Position
2-3 *
1-2
Position
1-2*
2-3
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