Stereo Amplifier User Manual
6  Documentation Number TCDA0997 Manual 
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 
PH (815) 433-5100 -- FAX (815) 433-5104
Figure 3.1: TCDA Connections 
NOTE: A 12VDC power supply must be connected to the TCDA’s 
2.5mm power jack. 
1.  ------- denotes that pin is not used. 
2.  Pin 17 and 18 are internally connected to each other to provide 
5VDC to REF+ for the SDAXX modules. 
3.  Pin 19 is internally connected to GND to provide 0VDC to REF- 
for the SDAXX and SPDA modules. 
provide +5V to REF+ in the
modules (AGND to AGND
Pin 17 and 18 are internally
connected in the TCDA to
XXXSDAXX and XXXSPDA
A/D ch.
A/D ch.
in the ADIO12 module).
REF-
REF+
+5VDC
P
o
w
e
r
S
u
p
p
l
y
2
.
5
m
m
P
o
w
e
r
J
a
c
k
T
C
D
A
M
o
d
u
l
e
TC #1
19
GND
18
17
19
18
17
GND
7
TC #0
8
9
GND
1
GND
7
8
9
GND
1
Thermocouples
y
e
l
l
o
w
r
e
d
T1-T1+
channel 1
r
e
d
y
e
l
l
o
w
T2-T2+
channel 2
A
/
D
M
o
d
u
l
e
RS-485
Port
RS-232
or
Table 3.1: Pinout of TCDA Module 
Pin #  Function  Pin #  Function 
1 GND 14 ------- 
2 ------- 15 ------- 
3 ------- 16 ------- 
4  -------  17  looped to pin 18 
5  -------  18  looped to pin 17 
6 ------- 19 GND 
7 GND 20 ------- 
8  TC # 0  21  ------- 
9  TC # 1  22  ------- 
10 ------- 23 ------- 
11 ------- 24 ------- 
12 ------- 25 ------- 
13 -------     










