Bird Technologies 3170A Series - Manual (Page 37)

Ap pen dix B
User Ap pli ca tions and Wiring
This sec tion is a col lec tion of user spe cific ap pli ca tions and the wir ing in for ma tion re quired to ac -
ti vate them.
Con nec tor As sign ment
B-1
Con nec tion De scrip tion Func tion Levels
BNC Jacks
J1 & J2
DC In put
For ward &
Re flected
De tected RF sig nals
from sen sors
30 µ A full scale into
1400 Ω (42mV). May
be overranged to
100mV
J3 DC Main Me ter
Drive Out put
Cur rent to drive
in di cat ing me ters
30 µ A full scale into
1400 Ω (42mV)
J4 DC Re mote
Me ter Drive
Out put
Volt age to drive re mote
in di cat ing me ters
1.038V full scale (use
33.2k re sis tor in se ries
with stan dard Bird
30
µ A me ters
TB1,2 Ex ter nal 12V
Sup ply
Used to al low mo bile
op er a tion
See page B-5 for con -
nec tion in for ma tion
TB3,4 Aux il iary Alarm
In puts
Sig nals to trip alarms
from ex ter nal sources
TTL lev els, ac tive low.
Pulled up to 5V by
4.7k in ter nally.
Shunted to ground by
0.1
µ F ca pac i tor.
TB5 5V Out put Reg u lated 5V out put Can sup ply 360mA
max.
TB6 Alarm Out put Low when alarm is
sound ing, re turned
high by re set
TTL lev els, ac tive low.
Open col lec tor pulled
up to 5V by 4.7k. Will
sink 180mA.
TB7 Ground Chas sis ground Ref er ence for sig nals.
TB8 Re set In put /
Out put
In put to re set Wattcher
from ex ter nal source.
May be used as an
out put to re set other
equip ment when
Wattcher is re set by
the front panel switch.
TTL lev els, ac tive low.
Pulled up to 5V by
4.7k in ter nally.
Shunted to ground by
10
µ F ca pac i tor.
TB9 Con firm Out put Low when for ward
power ex ceeds the
us ers con firm set point
TTL lev els, ac tive low.
Open col lec tor pulled
up to 5V by 4.7k. Will
sink 180mA.