Hardware 4-22
Table 7: Pin Out
(Ports normally assume the internal crossover function, but will automatically adapt to connected devices.
Straight instead of crossover cable is preferred. When daisy chaining switches, straight cable is a must.)
The Ethernet Switch is used for the DSP network only. The users
company LAN/WAN connects to a RJ45 connector labeled “LAN Enet”
on the Computer chassis rear panel.
From time-to-time the user specifies an Ethernet Switch other than
our standard Contemporary Controls EISK series. In this case, it is
likely that the switch powers from substation 125VDC, not the 12V
output from the recorder. Also the DSP circuit board may need to be
reprogrammed from Auto Negotiate to 100Mbit and Full Duplex
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