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2.4 JP5: 600¿ Termination
2.4
J P5: 600 ¿ Ter mination
Normally the Line Input is terminated in 600¿ .
removed by choosing the alternate position.
Condition
600¿ Termination
No Termination
2.5
J P6: Input Level Attenuation
This jumper permits coarse input sensitivity to be set. In the default position, the unit
expects a line level of 0dBm (nominal) at its Line Input.
levels of +20dBm(nominal) can be accepted.
Condition
0dB attenuation
20dB attenuation
2.6
J P7: Audio Response
Condition
750 uSec. pre-emphasis
Flat response
2.7
J P8: Subaudible Tone Sour ce
Condition
Internal CTCSS
External input
2.8
J P9/10/11: dc Loop Configur ation
DC loop current on the audio pair, is normally soured externally. The Eclipse exciters
loop the current through an opto-isolator. When the current flows the exciter keys up.
An alternative arrangement is possible.
external device can provide the dc loop.
These three jumpers select the appropriate mode.
Condition
Current Loop Input
12Vd Loop source
Page 8
2 TRANSMITTER INTERNAL JUMPER OPTIONS
Position
1-2*
2-3
Position
1-2 *
2-3
Position
1-2 *
2-3
Position
1-2, 4-5 *
2-3, 5-6
The exciter can source the current and an
J P9
J P10
ON
OFF
OFF
ON
The 600 ohm termination can be
In the alternate position,
J P11
OFF *
ON
RF Technology T220
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