Sensorsoft ST6105C User Manual - page 13
Sensorsoft Thermometer User Manual
Making communication cables for J-Suffix Sensorsoft Devices
In some applications it is not possible to use pre-assembled cables. When installing the Sensorsoft
device at a remote location it may be necessary to run cables through walls, ceiling or conduits
where connectors would get jammed. In this situation it makes sense to run the cables and then
terminate them, on-site, using hand tools. Further, if your host serial port is of the DCE type
(some multi-port serial cards) it will be necessary to make your own cables. The following details
will assist you in doing that.
A properly made cable will allow your Sensorsoft device to operate reliably over long cable
lengths up to 305 m (1000 ft) long. You may connect the Sensorsoft device to the port with as
little as three wires (RX,TX and GND) using inexpensive unshielded telephone wire. However
the host may need to set the number of retries high in order to overcome the effect of occasional
noise/interference and would also require the use of an external power supply at the Sensorsoft
Thermometer.
The Sensorsoft device modular jack connector uses the same UTP wire map as 10-BASE-T and
ISDN. It is therefore possible to use this type of cabling system for Sensorsoft devices.
PIN-OUT OF THE MODULAR 8 POSITION JACK/PLUG ON A SENSORSOFT DEVICE
Note: Terminal No. 1 is the terminal to the extreme left as you face the cable opening, latch tab down.
Terminal
Function
UTP wire color (solid-tracer)
1
ST Receive Data
white-green
2 Ground
green
3
ST Transmit Data
white-orange
4
Power +V
blue
5 Ground
white-blue
6 Ground
orange
7 Power
+V
white-brown
8 Ground
brown
The following are suggested specialized tools and parts needed to make good quality cables:
Hand Tools:
AMP Crimping Tool P/N 1-231652-0 or 2-231652-1, for modular plugs
AMP 8 position modular die set P/N 853400-1
AMP Crimping Tool P/N 90312-1 or 90302-1, for subminiature D pin or socket contacts
AMP PROCRIMPER P/N 58448-2, for subminiature D pin or socket contacts
AMP Insertion/Extraction Tool P/N 91285-1, for subminiature D connector contacts
Materials:
Berk-Tek UTP (Unshielded Twisted Pair) round stranded cable, P/N 540036--TP
(4 pair, 8-#24 AWG wires, category 4 or better, 75 C)
AMP 8 position modular plug for round stranded wire cables, P/N 5-554169-3 (CAT4)
AMP 8 position modular plug for round stranded wire cables, P/N 5-557961-3 (CAT5)
AMP DB-9 receptacle subminiature D connector (crimp-snap-in), P/N 205203-1 or -3
AMP DB-25 receptacle subminiature D connector (crimp-snap-in), P/N 205207-1 or 207463-1
AMP socket crimp contact for subminiature D connectors, P/N 1-66504-0
AMP pin crimp contact for subminiature D connectors, P/N 1-66506-0
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