Ac tive for ward mon i tor (afm) in put – Bird Technologies 3170A Series User Manual

Page 38

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Ac tive For ward Mon i tor (AFM) In put

Wiring con cept ex am ples for ac ti vat ing the AFM cir cuit are shown be low. These can be used for
re mote on site or off site man ual or au to matic ac ti va tion.

Dry Contact Closure

Clo sure will be from ter mi nal 10 to case ground, ter mi nal 7, in any con ve nient form, e.g. by an ex -
tra set of man ual con tacts on the trans mit ter key ing re lay or a sep a rate re mote switch.

Logic “1" Closure

Clo sure cir cuit shown is a sim pli fied means of in ter fac ing a logic “1" as re quired from TTL driv -
ing pos i tive sig nal, in di cat ing trans mit ter is on.

Bird Se ries 3170A High-Speed Wattcher
RF Mon i toring Sys tem

B-2

Figure B-1

Dry Con tact Clo sure

Figure B-2

Logic “1" Clo sure