YSI IQ SensorNet 2020 XT Terminal - Manual (Page 165)

System 2020 XT USB What to do if ...
7 - 5 ba76019e01 12/2012
Malfunctions despite
adequate supply voltage
on both +U V wires
Component is not
registered on the
system despite
sufficient supply voltage
on both +U V wires
(with no error message)
Cause Remedy
– Signal transmission faulty – For terminal components,
check/correct their seating on
the MIQ module.
– Check the log book for error
messages (for details on the
log book, see section 4.5).
– Check/correct the position of
the SN terminator switches (for
the correct settings, see
section 3.9.1).
– Check the total line length
within the IQ S ENSOR N ET . For
a total line length of more than
1000 m, an MIQ/JBR signal
amplifier module is required.
– Component is defective – Check the log book for error
messages (for details on the
log book, see section 4.5).
– If no log book entry exists, send
the component back.
Cause Remedy
IQ sensors
– IQ sensor connection cable is
not correctly connected or
defective
– Check IQ sensor cable
connection on the terminal
strip.
– Check IQ sensor cable and, if
necessary, replace it. Another
IQ sensor can be used for the
test.
– IQ sensor is defective – Test IQ sensor at another
measurement location.
– If IQ sensor still does not
function, contact YSI.
Other components
– Component is defective – If possible, test component at
another measurement location.
– If component still does not
function, contact YSI.