Quick Reference: Models Available |
Specs | Ordering Guide
Now when your SCSI bus is just a bit too short, there is a simple,
economical solution: Paralan's SCSI Isolating RegeneratoRâ„¢. A Paralan
RegeneratoRâ„¢ sends and receives SCSI transmissions at maximum sustained
SCSI data rate - up to 40 Mbytes/sec Ultra SCSI.
No need to modify software or hardware! Just connect your SCSI cables
to a RegeneratoRâ„¢ and all devices on the bus will be available at an
extra bus length. It's as easy as that!
SCSI too short?
To obtain one extra SCSI length, simply select the RegeneratoRâ„¢ model
appropriate for your system, and plug in your cables. Daisy chaining of
three or more RegeneratoRâ„¢s is also possible, depending on model. For a
full discussion on SCSI Extension see the
Extending
SCSI
page, and the article
The Case
for SCSI Expanders.
Narrow/Wide SCSI incompatibility?
Wide
SCSI (16-bit) may be placed on one side and narrow SCSI (8-bit) on the
other side. SCSI communication will be accommodated and all lines will
be properly terminated.
SCSI devices need isolation?
Devices on one side of the RegeneratoRâ„¢ may be disconnected and not
affect devices on the other side, as the signals on each side are
isolated.
The RegeneratoRâ„¢ is not just a repeater!
Cable causes timing delays of approximately 1.5 ns per foot of length.
When SCSI-specified cable length is exceeded, this cable-caused delay
would normally cause a system to malfunction. Logic circuitry in the
RegeneratoRâ„¢ manages this delay such that disconnect, reconnect,
arbitration and all other SCSI features are not affected. The SCSI
signals are regenerated, reshaped, and retransmitted, all transparent to
the system. Paralan's exclusive
Auto
Senseâ„¢, standard on all RegeneratoRâ„¢ models, automatically detects
correct termination power, solving many initial installation problems.
Paralan RegeneratoRâ„¢s are completely compatible with all devices that
conform to the full ANSI X3T10 standard. They are available either as
stand-alone units utilizing wall power, or as board-level units for
installation in other equipment. For a printable version of this
information, please see the
PDF version of this
data sheet.
Ordering Guide
RegeneratoRâ„¢ models are available for both
single-ended SCSI or differential (HVD) SCSI systems; wide (16-bit) or
narrow (8-bit):
| |
Stand-alone Unit |
Board-level Unit |
|
Single-ended SCSI |
HVD SCSI |
Single-ended SCSI |
HVD SCSI |
|
Narrow (8-bit) |
Use MS-16 |
Use SIR-D16C |
Use MS-17 |
Use SIR-D17B |
|
Wide (16-bit) |
Use MS16 |
SIR-D16C |
Use MS17 |
SIR-D17B |
 |
Specifications
SCSI Isolating RegeneratoRâ„¢ |
|
Environmental
Relative Humidity: 0 - 95% non-condensing
Operating Temperature: 0 - 50°C
Power Requirements
Stand-alone units:
Voltage: 115/220 V ac, auto select; Frequency: 50 - 60 Hz
Board-level units:
Voltage: 5 V dc ±5%
Safety Approvals
UL, CSA, TUV, CE
EMI/RFI
FCC Class A, CE
SCSI Connections
SIR-S8A, -S9A: SCSI-2 (Alt. 2 - A Cable)
SIR-D16B, -D17B: SCSI-3 68-pin High-Density female "P"
Connector
|
Communication
Parallel Transmission Rate:
Models SIR-D16B, -D17B:
up to 40 Mbytes/sec Ultra SCSI Models SIR-S8A, -S9A: up to
20 Mbytes/sec Ultra SCSI
Protocols: ANSI X3T10 SCSI standard
Physical Size (Stand-alone units)
Height:
SIR-S8A: 1.6 in. (41 mm)
All others: 2.5 in (64 mm)
Width:
4.1 in. (104 mm)
Depth:
SIR-D16B: 7.5 in (190 mm)
SIR-S8A: 4.5 in (114 mm)
Physical Size (Board-level units)
SIR-S9A: 3.880 x 4.000 in (98,5 x 101,6 mm).
For complete dimensions
see outline
drawing.
SIR-D17B: 3.880 x 6.750 in (98,5 x 171,4 mm).
For complete dimensions
see outline drawing.
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