Sentek RT6, Hardware Manual

Page: 36 / 90

SENTEK
Page 32
access to Main Board when tilted forward for
servicing.
7. Tighten the cable gland with a 15-mm open-end
spanner.
8. Reposition and tighten the ferrite bead cable so
the ferrite bead is within 10cm of the cable
housing gland.

Caution:
Ferrite beads must be fitted to both ends of the
probe cabling in order to comply with EMC and
FCC requirements.
External RS232 cabling
The "RS232" connector on the RT6 Main Board (see
Appendix E – Overlay Diagram for locations)
provide serial RS232 signals which can be connected
to external devices. These devices may be in the
form of radio modems, computers, etc.
The following signals are made available for
connection to these devices:
0V
= 0 volts or ground
RTS = request to send
TD = transmit data
RD = receive data
12V = 12 volts (fused)
Consult the external device manual for the correct
wiring method to these devices. Note that null modem
connections need to be made at the computer end (see
Appendix H) of the cable.
The cable used for connection should be attached
through a cable gland in the base of the logger
housing to ensure a watertight seal is maintained.
RT6 Jumper
Settings:
Jumpers JP1 and JP2 are shown on Appendix E –
Overlay Diagram.
Jumper JP1 "TERM" is needed when multiple RT6
loggers are chained together on an RS485 cable. The