ONICON System-10 N2 - Manual (Page 24)

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System-10-N2 BTU Meter Installation and Operation Guide 05/14 - 0655-5 / 18322
Page A-3
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INPUT IMPEDANCE JUMPER (J1)
PULSE TYPE SELECTOR SWITCH (S1)
CONNECTOR (T1) RS 485 COM.
CONNECTOR (T2) AUX. PULSE INPUT
R6
R8
R4
R5
Pulse Type
-
C1
T2
Aux. Pulse IN
+
R3
R1
R2
U3
Sink/
Src.
Contact
R20
Pwrd.
Pulse
LOW
R15
R11
D4
R14
R13
C12
U1
Q1
R12
D3
S1
HI
C9
C10
C7
U5
U6
D2
R17
R18
U7
C2
R10
D1
R9
U4
C4
U2
L1
C3
R19
C8
D6
J1
TVS1
Impedance
T1
H1
RS485
SYSTEM-10-N2 BTU METER
N2 BOARD WITH AUXILIARY INPUT PULSE
12-8-04
A-12
0458
SYSTEM-10 BTU METER N2 BOARD
with Auxiliary Input Pulse
AUX. PULSE INPUT
(Di3)