Comtrol RocketPort Serial Hub Si 8-Port - Manual (Page 8)

Building Straight-Through Cables 8 of 9
Building Straight-Through Cables
Use the following figure if you need to build a straight-
through cable. You can use a straight-through cable to
run the bootable diagnostics for RS-485 mode, or you
can build your own and connect only Pins 3 and 7.
Straight-through cables are also used for DCE devices.
Building Additional Loopback Plugs
Loopback connectors are DB9 female serial port plugs,
with pins wired together as shown, that are used in
conjunction with the diagnostic software to test serial
ports. The RocketPort Serial Hub Si is shipped with a
single loopback plug (RS-232/422).
This information can help you build additional plugs or
replace a missing loopback.
Wire the following pins together
for an RS-232 loopback plug:
• Pins 1 to 4 to 6
• Pins 2 to 3
• Pins 7 to 8
Note: The RS-232 loopback plug
also works for RS-422.
Wire the following pins together
for an RS-422 loopback plug:
• Pins 2 to 3
• Pins 7 to 8
Hardware
Specifications
This table illustrates environmental conditions.
The following table lists electromagnetic compliance
certifications.
The following table illustrates hardware specifications.
Environmental Conditions Value
Air temperature:
System on
System off 0 to 40
o
C
-20 to 85
o
C
Altitude 0 to 10,000 feet
Heat output:
4-Port
8-Port 22.0 BTU/Hr
26.9 BTU/Hr
Humidity (non-condensing):
System on
System off 8% to 80%
20% to 80%
RPSH
-Si
C
o
nnect
or
DB9
1
2
3
4
5
8
6
7
Pins
DCD
RxD
TxD or TRX-
DTR
GND
CTS
DSR
RTS or TRX+
Signal
DB9
1
2
3
4
5
8
6
7
Pins
DCD
RxD
TxD or TRX-
DTR
GND
CTS
DSR
RTS or TRX+
Signal
RPS
H
-Si
Connect
or
Pin 9 is not connected.
Fe
m
a
le
Fe
m
a
le
RS-485 Loopback Cable
Note: The RS-485 loopback cable only requires that
Pins 3 and 7 to be connected.
Pin 1 Pin 5
Pin 6 Pin 9
RS-232 Only
(Back View)
Pin 1 Pin 5
Pin 6 Pin 9
RS-422 Only
(Back View)
Mean Time between Failures:
4-Port
8-Port 24.2 years
20.8 years
Electromagnetic
Compliances
Status
Emission:
Canadian EMC requirements
CISPR-22/EN55022 Class A
FCC Part 15 Class A
Yes
Immunity:
EN50082 (801-2 ESD , 801-3 RF,
and 801-4 FT)
Yes
Safety:
EN60950
UL Listed Yes
Topic
Hardware
Specifications
Baud rate (maximum) 230.4 Kbps
Current consumption:
4-Port
8-Port 54 mA (at 120 VAC)
66 mA (at 120 VAC)
Dimensions
4-port
8-port 6” x 9” x 1.5”
6” x 9” x 2.4”
Driver Control:
Data bits
Parity
Stop bits 7 or 8
Odd, Even, None
1 or 2
Ethernet host interface 10Base-T (10 Mbps)
Hubs per server
Dependent on OS. See the
software documentation.
Line frequency 50 - 60 Hz
Line voltage 100 - 240 VAC
Number of ports 4 or 8
Power consumption:
4-Port
8-Port 6.4 W
8.0 W
Weight
4-Port
8-Port 1 lb 2 oz
1 lb 4 oz
Environmental Conditions Value