Kongsberg EM 712 Maintenance Manual page 20

Kongsberg EM 712 Maintenance Manual
Details
CPU Test
This test presents the CPU type, the CPU clock frequency, the current and
maximum temperatures for the CPU die and for the CPU board. In addition
some key voltages are reported, and finally the network addresses for the board's
interfaces.
CBMF test
This test presents the CBMF board temperature, the internal power supply voltages.
In addition software and firmware versions are displayed.
RX unit test
This test presents the internal temperatures and voltages in the receiver electronics.
In addition software and firmware versions are displayed.
TX unit test
This test presents the internal temperatures and voltages in the transmitter
electronics. In addition software and firmware versions are displayed.
CBMF-CPU link
This test checks CBMF board(s), Ethernet connection and the parallel bus interface
between the CBMF board(s) and the CPU circuit board. A large set of known data
is transferred from the CPU unit on Ethernet via CBMF back to the CPU board.
The data received is checked by the CPU board.
RX-CBMF link
This test checks the GBit interface between the RX unit and the CBMF boards. A
large set of known data is transferred from RX unit via CBMF to the CPU board
on parallel bus. The data received is checked by the CPU board.
RX-CPU link
This test is not implemented yet.
RX channels
The Receiver Unit has a programmable signal generator board that is used to inject
a test signal at the preamplifier inputs in the RX arrays. The BIST report displays
the measured RX transducer impedance for all RX channels. This test may fail at
very high noise levels.
TX channels
This test checks the impedance of all TX elements. This is done by measuring
the voltage and current used by all individual transmitters. This test may fail at
very high noise levels.
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