Cables
Our instruments are mostly shipped with RS232
communication. RS422 is used for cables longer than
50 m. The wiring is shown in the tables to the right.
The output can either be in ASCII, in fixed NMEA
format, or binary format.
Communication baud rate: 300-115200 (user setting).
Recorder download baud rate: 600/1200 kBaud.
Ensure that the connectors and dummy plugs are
lubricated with dielectric silicone. We recommend 3M
silicone spray. Note that the silicone grease included
in the shipment should be used on the O-rings only.
Analog Input (default for most instruments)
The instrument can read two analog inputs at the
same time. The input range is 0-5V, corresponding to
0-65535 counts in the data file.
Power
• DC Input: 9-16 VDC
• Battery DC-input: Nominal voltage: 13.5-18V
• Absolute maximum DC input voltage: 18.6 V
System Integrator Manual
For more information on how to control a Nortek
product with a non-PC controller, a System Integrator
Manual is available on the website.
Troubleshooting
As most problems are caused by simple mistakes,
please initially check if
• you have forgotten to power the system
• the connector has fallen out of the computer
• you are using the wrong serial port
When all obvious mistakes are ruled out, please turn
to our
Troubleshooting Guide
. The FAQ site may
also be helpful.
If the problem is still present contact Nortek
support at [email protected]
Underwater Connector
Termination
Pin. No
Wire Color
Purpose
Pins
Description
3
black
RS232 Tx
Twisted
Pair
2
4
white
RS232 Rx
3
5
black
RS232 Gnd
Twisted
Pair
5
6
white/purple
Power Output
7
black
Analogue Ch. 2
Twisted
Pair
8
white/orange
Analogue Ch. 1
1
black
Power Gnd
Twisted
Pair
2
white
Power +
Screen terminated at pin 1 in underwater connector, unterminated at PC side.
Ref: N2100-002A
Underwater Connector
Termination
Pin. No
Wire Color
Purpose
Pins
Description
3
black
RS422 Tx +
Twisted
Pair
7
4
white
RS422 Tx -
2
7
black
RS422 RX -
Twisted
Pair
8
8
white/orange
RS422 RX+
3
5
black
Sync. Out
Twisted
Pair
6
white/purple
Sync. In
1
black
Power Gnd
Twisted
Pair
2
white
Power +
Screen terminated at pin 1 in underwater connector, unterminated at PC side.
Ref: N2100-108
Underwater Connector
Termination
Pin. No
Wire Color
Purpose
Pins
Description
3
black
RS232 Tx
Twisted
Pair
2
4
white
RS232 Rx
3
5
Black
Ground
Twisted
Pair
5
6
white/purple
Analogue Z*
Red wire
7
Black
Analogue X
Twisted
Pair
Green wire
8
white/orange
Analogue Y
Yellow wire
1
black
Power Gnd
Twisted
Pair
Black wire
2
white
Power +
White wire
Screen
Bare
Ground
3 bare wires for grounds, connected
internally to power ground.
Ref: N2100-004
Wiring of RS232 with option for analogue outputs.
*Optional version outputs pressure instead of Z-velocity
