12
Getting Started with DT800
dataTaker
UM-0071-A0
Male and Female Connectors
Male connectors (plugs) have protruding pins,
whereas female connectors (sockets) have holes to
receive the pins. See the “Connectors, Adaptors”
Extras panel.
Communications Ports
The DT800 has three communications ports:
• a
Host RS-232
port
• a 10BaseT
Ethernet
port
• a
USB
port
They are located on the DT800’s left side panel.
The communications connector(s) on the back of your
computer are also known as “COM ports” (or “serial
ports”). Most computers have one or more COM ports,
named COM1, COM2 and so on, and may also have
other connectors for Ethernet and USB.
Comms Cable
An abbreviation of “communications cable”.
Many types of comms cables exist. But, because the
DT800’s Host RS-232 port is a standard DTE device,
you only need a standard null-modem serial cable —
also known as a “crossover cable” — to connect this
port to the host computer.
In fact, the Host RS-232 port on the DT800 is exactly
the same in form and function as the serial port on
your PC. This means that you can connect a modem or
other serial device to the DT800 using standard serial
cables intended for connecting the modem to a
computer.
NOTE
The comms cable supplied with your DT800
is not the same as that supplied with
dataTaker DT50
and DT500/600 Series data loggers.
Serial Channel
The DT800 has a serial port for smart sensors, located
on the DT800’s front panel and labelled
Serial
Channel
. This port can be configured as RS-232,
RS-422, RS-485 or SDI-12.
The DT800’s Serial Channel is not a standard, serial
COM port.
Characters
Things you type. The generic name for numbers (0, 1,
2, 3,…), letters (A, b, c, D,…) and symbols ($, %, &,
+,…).
Connectors, Adaptors
The connectors on the communications cable
supplied with your DT800 are of the “DE” female
type. This is a 9-pin D-shaped connector, as shown
below.
Another common comms connector is the “DB”
type, which is also D-shaped but has 25 pins. If
your computer’s COM port has one of these, you’ll
need to add a 9-pin to 25-pin adaptor to the end of
your DT800 comms cable.
Pin 1
DE-9 Male
DE-9 Female
DB-25 Male
DB-25 Female
Pin 1
F
IGURE
5
Typical comms connectors
Summary of Contents for DT800
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