Table of Contents
Advertisement
ONLINE ELECTRONICS LTD
4.5. SEANET CONNECTOR WIRING
If a SEANET connector is fitted to the 3011 EM POD then the standard connections below are
used.
1 (Outer) ......................................................... +24VDC 3011 POWER (+18VDC to +36VDC)
2 ............................................................................ 0V 3011 POWER & RS232 Data Ground
3 ...................................................................................................................... Not Used
4 ...................................................................................................................... Not Used
5 ................................................................................................... RS232 Data to 3002RS
6 ...................................................................................................................... Not Used
7 (Centre) ......................................................................................................... Not Used
4.6. TROUBLESHOOTING
If problems persist contact Online Electronics Limited for support.
Complete all tests in section 3.3 PRE-DEPLOYMENT CHECKS.
Initially check that the system components are all functional by completing section 4.1 3002RS
ROV SYSTEM DECK TEST. If this section cannot be completed then it indicates there is a
problem with one of the system components which must be identified and fixed before
attempting section 4.2 3002RS ROV SYSTEM INSTALLATION.
If section 4.1 3002RS ROV SYSTEM DECK TEST is successfully completed but problems are
encountered during section 4.2 3002RS ROV SYSTEM INSTALLATION then it indicates that the
problem is related to the ROV system/configuration.
Note that the 3011 EM POD internal circuitry 0V is isolated from the 24VDC supply connections
but not from the RS232 Data Ground. This can cause problems if very sensitive ground
leakage detection is used by the ROV system or there is excessive electrical noise on the ROV
RS232 Data Ground. If possible use an isolated RS232 port on the ROV and provide an isolated
supply to the 3011 EM POD.
One of the most common problems encountered is having RS232 Tx and Rx configured
incorrectly within the ROV system. Often the ROV system is capable of swapping these
connections remotely at each end of the umbilical. Systematically try all possible combinations.
Refer to section 4.4 STANDARD SYSTEM WIRING.
Referring to section 4.4 STANDARD SYSTEM WIRING check continuity of all cable connections.
4.7. 3011 RS232 TROUBLESHOOTING
In order to confirm RS232 transmission from the 3011 EM POD use the EM DECK TEST CABLE
to connect the 3011 EM POD to a PC running a terminal program such as HyperTerminal
configured as per section 4.3 RS232 LINK SETTINGS. An adaptor to swap RS232 Rx and Tx
may be required. Refer to section 4.4.4 9W D-TYPE CONNECTOR.
Confirm that while powered the 3011 EM POD is transmitting a continuous stream of data
consisting of random characters.
3002RS_5002_A01
Page 15 of 17
Advertisement
Table of Contents
