Cygnus UW-TSR Operation Manual
M4-CYG1UW-TSR-M-ENG_Iss11.docx
28
5.
Topside Repeater Facility
The Topside Repeater (TSR) facility allows the thickness
measurements to be relayed from the Gauge up to the surface
where they can be observed and recorded. The TSR equipment is
either included with a new Gauge or can be added to the kit later
2
as an accessory.
There are three ways of displaying the thickness measurements
topside;
1.
Using a Cygnus Topside Repeater Display (Option A)
2.
Using a computer with CygLink software
(Option B)
3.
Using both of the above
(Option C)
Option C uses a special
‘
Y
’
splitter cable.
To get the thickness measurements topside the gauge sends
packets of serial data using an RS-422 interface. The RS-422 is a
simplex differential signal transmitted along a single twisted pair.
The maximum cable length is 1,200 metres (4,000 ft).
It is possible for a third party application to read the data packets
and process the thickness data, for more information of the data
format see page 76.
2
To connect the TSR the Cygnus UW gauge must have an integral Impulse Connector fitted.
