Science Workshop
®
750
Interface
012-06772A
2
Equipment
INCLUDED
ScienceWorkshop 750
Interface box
12 V, 2 A power supply
connecting cable with a DB25 connector for
the computer SCSI port and a MDB50
connector (high density 50-pin) for the 750
interface box
Adaptec SCSI card
OPTIONAL
An optional cable for connecting the
750
Interface to a serial port is available. Note that
the maximum data rate through a serial port is
much less than that through
a SCSI port.
cable with an 8-pin MDIN on each end for the
Macintosh
(part no. 514-002)
cable with an 8-pin MDIN connector for
connecting with the 750 interface and a DB25
for connecting with a Windows serial port
(part
no. 514-5965; for a computer with a 9-pin serial
port, also order the 25-pin to 9- pin adapter, part
no. 514-009.)
power ON/
OFF switch
jack for 12
V power
supply
8-pin DIN
jack for
optional
connection
to serial
port
SCSI ID
number switch
SCSI port
Figure 1
Back panel of the
750
Interface
Operation
Operation with
ScienceWorkshop
on a Windows
computer
The 750 Interface must be turned on before the
computer is powered up
Windows will only
recognize SCSI devices during the boot process.
Power Supply
The
750
derives its main power from an external table
top power supply. All of the operating voltages are
generated inside the
750
Interface.
SCSI Connection
The main connection to the computer is through the
SCSI port.
The
750
has an improved SCSI data
transfer rate which can be about 4 times that of the
700 interface, depending on the computer speed.
The
SCSI cable has a DB25 connector for the computer
and a MDB50 connector (high density 50-pin) for the
750
interface.
The
750
has only one connector on the
back panel, and therefore
it must be the last SCSI
device in the chain
.
The SCSI bus is
actively
terminated inside the
750
;
there is no need for external
termination of the SCSI bus.
All devices in the SCSI
chain (CD-ROMs, scanners, etc.) must be powered
up during operation of the 750 Interface.
The SCSI ID number is preset to 2 at the factory.
If
you wish to change the ID number, simply change the
switch setting on the back panel and cycle the power.
The interface reads the switch only at powerup.
➤
Note
: To avoid conflicting with other SCSI
devices on your system, be sure to check for free ID
numbers before changing the SCSI ID number.
Optional Serial Port Connection
For the situation where a SCSI port is not available,
the
750
can be connected via the serial (COM) port.
However, the maximum data transfer rate is much less
than for the SCSI port.
For the part number for the
connecting cable, refer to the optional equipment list.
Flash Memory
The
750
stores its operating system (also waveform
patterns) in flash memory.
Therefore, shortly after
powerup, the interface is running the operating system
(OS) without requiring initialization from
Science
Workshop
.
ScienceWorkshop
can upgrade the resident
OS and waveforms in flash memory when a new
revision is available.
During operation, do not block the louvres on
the top and bottom of the interface box.
