Chapter 4
Installing the Drive
Page 34
Filepro CFP4207 Series
Disabling the SCSI Bus Parity - CFP4207S
SCSI parity is always enabled in both directions, unless the E7 Parity disable
jumper is installed. Installing the jumper will cause the drive to ignore SCSI
bus Parity In but it will continue to generate SCSI bus Parity Out.
Disabling SCSI Bus Terminator Power (TERMPWR) - CFP4207S
Power to the on-board terminators is provided by the higher of the voltage
supplied at Pin #26, J2 or the voltage level at the 5 Volt power input to the drive
minus one diode drop. Termination Power to external terminators can be
supplied by the drive through Pin #26, J2. The signal output characteristics are
described in chapter 5. The TERMPWR line can be disconnected from the drive
by removing Jumper E8.
Table 4-10
Disabling SCSI Bus TERMPWR
Jumper E8
Result
In
TERMPWR (J2, Pin #26) connected to the drive's
internal termination power.
Out
TERMPWR (J2, Pin #26) open circuit.