Owner`s manual

Additional technical information on the interface and the connectors is
available in the Module Installation Guide (see the Related Documenta-
tion section).
The ideal cable impedance match with terminators is 132 ohms. A char-
acteristic impedance of 100 ohms 10% is recommended for unshielded
flat or twisted-pair cables; a characteristic impedance greater than 90
ohms is preferred for shielded cables. Cables of different impedances
should not be used. A minimum conductor size of 28 AWG is required.
Twisted-pair cable must not have less than one twist per inch. Each end
of the twisted pair ground wire must be connected to the chassis ground.
CAUTION
Connect the interface cables and terminator, if needed,
before switching on the drive. Connecting either while
the drive is already on may blow the fuse on the interface
circuit board.
For single-ended applications a 50-conductor flat cable or 25-signal
twisted-pair cable is required. The maximum cable length is 6 meters
(19.7 feet) including all internal cabling.
2.3.4.2 Power Cord
An ac power cord is shipped in the country kit. Connect the power
cord to the rear panel (see Figure 2–4). The autoranging power supply
selects the voltage and frequency range automatically. With the power
applied, the TSZ07 is ready for operation (see Chapter 3 for operating
information). Note that you may have to change the Unit Address
(default = 4) to match the needs of your installation.
CAUTION
An abnormal interruption of system operation can occur
if the ac power is disconnected (power cord disconnected
or ac power switch turned off (0)) from the TSZ07 or if
the front panel ON/OFF switch is cycled while the system
is running. Always shut down the host system before
turning off power to the tape drive.
2–10 Installation