4.0 Pin Out of the DB25 Female ‘Output’ Connector
Analog Outputs
For 4-20 ma output of Pressure at P1 (Analog 1), use pins 2 (4-20 -) and 14 (4-20 +). If excitation is
needed in the loop, connect pin 1 (Vpwr) to pin 14 (4-20 +), and connect the output cable to pin 2
(4-20 -) and pin 15 (Gnd).
For 4-20 ma output of Pressure at P2 (Analog 2), use pins 4 (4-20 -) and 16 (4-20 +). If excitation is
needed in the loop, connect pin 3 (Vpwr) to pin 16 (4-20 +), and connect the output cable to pin 4
(4-20 -) and pin 17 (Gnd).
For 4-20 ma output of Pressure at P3 (Analog 3), use pins 6 (4-20 -) and 18 (4-20 +). If excitation is
needed in the loop, connect pin 5 (Vpwr) to pin 18 (4-20 +), and connect the output cable to pin 6
(4-20 -) and pin 19 (Gnd).
For 4-20 ma output of Pressure at TM or DP (Analog 4), use pins 8 (4-20 -) and 20 (4-20 +).
If excitation is needed in the loop, connect pin 7 (Vpwr) to pin 20 (4-20 +), and connect the output
cable to pin 8 (4-20 -) and pin 21 (Gnd).
14
1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A
Date: 4/1/2006 Sheet of
File: N:\1_Clients\..\Analog Main.SchDoc Drawn By:
Analog1+
Analog1-
F1
0.1A
Vpwr
Analog2+
Analog2-
Analog3+
Analog3-
Analog4+
Analog4-
1
20
2
21
3
22
4
23
5
24
6
25
7
8
9
10
11
12
13
14
15
16
17
18
19
27
26
P1
D Connector 25
OUT1
OUT2
OUT3
OUT4
1 2
R4 1.0K
1 2
R3 1.0K
1 2
R2 1.0K
1 2
R1 1.0K
ACLK
ADATA
ALATCH1
ALATCH2
ALATCH3
ALATCH4
Vpwr
+3.3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P2
CON2X8
OUT1N
OUT2N
OUT3N
OUT4N
1
2
3
D3
MMBD1503A
+5.0V
+5.0V
1
2
3
D2
MMBD1503A
+5.0V
1
2
3
D1
MMBD1503A
+5.0V
1
2
3
D4
MMBD1503A
+5.0V
OUT1N
OUT2N
OUT3N
OUT4N
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