Teledyne 2105 Installation And Operation Manual page 56

2105 Interface Module
Section 2 Installation and Operation
Pin
A - SDI-12A
B - XMT-IO1B
C - RCV-IO2C
D - V5D-IO3D
E - A2D-IO4E
F - A2D-IO5F
G - CTR-IO6G
H - CTR-IO7H
J - DGND-J
K - VBAT-K
L - PGND-L
M - PSRC-M
a. All voltage levels are positive default and referenced to common ground on pins J and L.
b. All pulse signals are considered 50% duty cycle.
c. See user manual for additional information on alternate configurations.
2-36
Table 2-4 2105 Port Connector Functions
Wire
Functionality
Color
Brown SDI-12 Data
Red I/O + Serial Out TTL Serial Transmit Transmits 0 to 5 VDC,
Orange I/O + Serial In
Yellow I/O + Pulser
Green I/O, Analog
Voltage
Blue I/O, Analog
Voltage
Violet I/O, Analog
Voltage
Gray I/O + Counter
Black Digital Ground
Tan Battery Voltage Battery Voltage
White Power Ground
Pink Power Source
Default
Configuration
SDI-12 Data Master Transmits/Receives 0 to 5
TTL Serial Receive
Flow Pulse Output
Sampler Inhibit Out-
c
put
Sampler Event Mark
Input
Rain Gauge Tip
Input
Sampler Bottle
Number Input
Digital Ground
Power Ground
Power Source
(switched)
a
Additional Information
VDC, 1200bps
default 9600bps
Receives ± 4 to 26 VDC,
default 9600bps
b
Transmits 65-75 ms, 5 VDC
pulses
Transmits sustained, 0
VDC for Inhibit
Receives 3 second, 4 to 26
VDC pulses
Receives 48 ms, 0 VDC
Rain pulses
Receives 48 ms, 4 to 26
VDC pulses
0 VDC, 100 mA typical
7-26 VDC, 1A maximum
0 VDC, 3A maximum
9-12 VDC, 0.5A maximum