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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
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.
Environmental Conditions
Air temperature:
System on
System off
Altitude
Heat output:
Humidity (non-condensing):
System on
System off
Mean Time between Failures
The following table lists electromagnetic compliance
certifications.
Electromagnetic
Compliances
Emission:
Canadian EMC requirements
Class A
CISPR-22/EN55022
FCC Part 15 Class A
Immunity:
(801-2
EN50082
ESD
and 801-4
FT)
Safety:
EN60950
UL Listed
Building Additional Loopback Plugs
Pin 1
Pin 6
RS-232 Only
(Back View)
Pin 1
Pin 6
RS-422 Only
(Back View)
Value
o
0 to 40
-20 to 85
0 to 10,000 feet
BTU/Hr
8% to 80%
20% to 80%
38.8 years
Status
Yes
, 801-3 RF,
Yes
Yes
The following table illustrates hardware specifications.
Baud rate (maximum)
Current consumption:
Dimensions
Driver Control:
Pin 5
Data bits
Parity
Pin 9
Stop bits
Ethernet host interface
Hubs per server
Pin 5
Line frequency
Line voltage
Pin 9
Number of ports
Power consumption:
Weight
Notices
Radio Frequency Interference (RFI) (FCC
15.105)
C
This equipment has been tested and found to comply
o
C
with the limits for Class A digital devices pursuant to
Part 15 of the FCC Rules.
This equipment generates, uses, and can radiate radio
frequency energy, and if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
However, there is no guarantee that interference will
not occur in a particular installation. If this equipment
does cause harmful interference to radio or television
reception, which can be determined by turning the
equipment off and on, the user is encouraged to try and
correct the interference by one or more of the following
measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment
and the receiver.
•
Connect the equipment into an outlet on a circuit
different from that to which the receiver is
connected.
•
Consult the dealer or an experienced radio/TV
technician for help.
Labeling Requirements (FCC 15.19)
This equipment complies with part 15 of FCC rules.
Operation is subject to the following two conditions:
•
This device may not cause harmful interference,
and
•
This device must accept any interference received,
including interference that may cause undesired
operation.
Topic
20 mA (at 120 VAC)
6.1" x 4.28" x 1.18"
Odd, Even, None
10/100Base-T (10/100
Dependent on OS, see the
software documentation
Hardware
Specifications
115.2 Kbps
7 or 8
1 or 2
Mbps - RJ45)
50 - 60 Hz
100 - 240 VAC
2
2.4 W
9.5 oz
5 of 6
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