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RF Technology R350/R500
2 RECEIVER INTERNAL JUMPER OPTIONS
2.7 JP7/8/9 Direct Output COS
2.7
JP7, JP8, JP9: Direct Output COS (JP4 2-3)
In this arrangement, the COS signal is taken via the separate COS+ and COS-
outputs, either with free (floating) output or with +12Vdc pull-up.
Condition
JP7
JP8
JP9
+12 Vdc Direct Output
2-3
OFF
OFF
Free Switch Output
1-2
OFF
OFF
2.8
JP11 EPROM Type
Condition
Position
27C256
2-3 *
27C64
1-2
2.9 JP13: Squelch Defeat (pcb 30/9132/0002 or later)
Normal squelch can be defeated with an active low signal at DB-25 pin 19.
Condition
Position
Squelch operation normal
1-2 *
Squelch Defeat
2-3
2.10 JP19: LED Alarm o/p (pcb 30/9132/0002 or later)
The LED alarm can be brought out to DB-25 pin 7 for ATI
Condition
Position
No Alarm Output
1-2 *
Alarm LED connect to DB-25 pin 7
2-3
