Black Box sm900a Manual De Usuario
2
module communications and test
functions.
functions.
You can use the interface
labeled ”I/A”, for instance, to
connect a basic error rate (BER)
tester or a protocol analyzer. In
addition to BER tests, you can
conduct protocol simulation, block
error rate (BLER) tests, or error-free
seconds (EFS) tests.
connect a basic error rate (BER)
tester or a protocol analyzer. In
addition to BER tests, you can
conduct protocol simulation, block
error rate (BLER) tests, or error-free
seconds (EFS) tests.
The other test interface, labeled
“Monitor,“ enables you to connect
a data-line monitor device when
you want to passively monitor
certain lines. The interface’s
parallel-wired connectors are also
used to daisychain two or more
PSSII chassis.
Modules for the system
a data-line monitor device when
you want to passively monitor
certain lines. The interface’s
parallel-wired connectors are also
used to daisychain two or more
PSSII chassis.
Modules for the system
For your various interface
requirements, we offer a number
of modular cards (also called
circuit cards) that can be installed
in a PSSII chassis. Each card is a
single switchable circuit between
your data terminal equipment
(DTE) and data communications
equipment (DCE), and feature
circuit-status display and alarm
definition, detection, and reaction.
of modular cards (also called
circuit cards) that can be installed
in a PSSII chassis. Each card is a
single switchable circuit between
your data terminal equipment
(DTE) and data communications
equipment (DCE), and feature
circuit-status display and alarm
definition, detection, and reaction.
The cards are equipped with
three ports that link to A, B, and
Common paths. These paths
connect to the equipment cables
attached in at the chassis’ rear.
You can switch paths, for instance,
when you need to reroute a circuit
from an attached device that has
failed to a device or circuit that’s
operational. To switch, press a
button on the mounted card. LEDs
inform you of your selected switch
position.
connect to the equipment cables
attached in at the chassis’ rear.
You can switch paths, for instance,
when you need to reroute a circuit
from an attached device that has
failed to a device or circuit that’s
operational. To switch, press a
button on the mounted card. LEDs
inform you of your selected switch
position.
Each card has four manual
patch cavities. Three of these
provide intrusive access to the A,
B, and Common (modem) sides of
the switchable circuit. The fourth
cavity provides bridged (non-
intrusive) access to the Common
(modem) side.
provide intrusive access to the A,
B, and Common (modem) sides of
the switchable circuit. The fourth
cavity provides bridged (non-
intrusive) access to the Common
(modem) side.
RS-232, RS-530, X.21, and V.35
Front Interface Cards,
(SM906C–SM909C) feature a
switchable A/B circuit, a common
RS-232 or V.35 cable connection,
plus signal-monitoring LEDs. You
can mix, match, and install up to 16
cards in the chassis.
(SM906C–SM909C) feature a
switchable A/B circuit, a common
RS-232 or V.35 cable connection,
plus signal-monitoring LEDs. You
can mix, match, and install up to 16
cards in the chassis.
With up to nine alarm options,
each RS-232, RS-530, and V.35
circuit can be individually
configured for up to a maximum
of eight alarms on the presence or
absence of Physical Layer signals.
And each X.21 circuit can be
individually configured for up
to six programmable alarms.
circuit can be individually
configured for up to a maximum
of eight alarms on the presence or
absence of Physical Layer signals.
And each X.21 circuit can be
individually configured for up
to six programmable alarms.
(continued from page 1)
(continued on page 3)
The front and back views of a
Pro Switching System II chassis.
(2) Power
Supplies
(1) Management Control Card
(Slot is also used for Terminal Display Card)
(16) Front Interface Cards
(Slots are also used for Universal Serial Cards)
All modules mount in a Pro Switching
System II chassis for installation in a
standard 19-inch rack. The chassis
includes a six-foot (1.8-m) AC power
cord. Standard AC voltage is 115- or
230-volt input.
System II chassis for installation in a
standard 19-inch rack. The chassis
includes a six-foot (1.8-m) AC power
cord. Standard AC voltage is 115- or
230-volt input.
The redundant front-loaded power
supplies (to be ordered separately)
provide DC-voltage power to the
chassis.
supplies (to be ordered separately)
provide DC-voltage power to the
chassis.
The Management Control Card (also
to be ordered separately) contains
LEDs that indicate signal status of
any interface patched to the control-
module cavity from a patch cavity.
The LEDs illuminate with a positive
voltage, such as a data “space” or a
control signal “high.” Next to each
LED are voltage-test jacks.
to be ordered separately) contains
LEDs that indicate signal status of
any interface patched to the control-
module cavity from a patch cavity.
The LEDs illuminate with a positive
voltage, such as a data “space” or a
control signal “high.” Next to each
LED are voltage-test jacks.
If you don’t require patching
capabilities but want economical
A/B switching plus transfer speeds
of 10 Mbps! within your PSSII,
order Universal Serial Cards
(SM930C–SM934C). These cards
support RS-232, V.35, RS-530, X.21,
10BASE-T, and analog RJ-11 or
RJ-45 communications. They differ
only in the interface adapters
shipped with them (except for the
SM930C, which is designed to link
to the chassis’ three DB25
connectors and, therefore, requires
no adapters).
A/B switching plus transfer speeds
of 10 Mbps! within your PSSII,
order Universal Serial Cards
(SM930C–SM934C). These cards
support RS-232, V.35, RS-530, X.21,
10BASE-T, and analog RJ-11 or
RJ-45 communications. They differ
only in the interface adapters
shipped with them (except for the
SM930C, which is designed to link
to the chassis’ three DB25
connectors and, therefore, requires
no adapters).
The SM930C is a universal
DB25 model that’s suitable for
RS-232 or RS-530 switching
applications.
RS-232 or RS-530 switching
applications.
The SM931C has three DB25
male to DB9 female adapters. It’s
ideal for RS-232 TIA-574 (IBM
ideal for RS-232 TIA-574 (IBM
®
PC
COM port) switching applications.
The SM932C has three DB25
male to DB15 female adapters and
is suitable for X.21 switching.
is suitable for X.21 switching.
The SM933C has three DB25
male to RJ-11 female adapters and
is suitable for 4-wire RS-422
applications or can be used to
switched telephone circuits not
connected to the public telephone
system.
is suitable for 4-wire RS-422
applications or can be used to
switched telephone circuits not
connected to the public telephone
system.
The SM934C, which features
RJ-45 connectors that are RJ-48
compatible and are unkeyed,
compatible and are unkeyed,
includes three DB25 male to RJ-45
female adapters. It’s suitable for
RS-232 TIA-561, 8-wire RS-422,
10BASE-T, or Token Ring (up to
16 Mbps) applications. It can also
be used to switch private T1 or E1
circuits not connected to the public
telephone system.
female adapters. It’s suitable for
RS-232 TIA-561, 8-wire RS-422,
10BASE-T, or Token Ring (up to
16 Mbps) applications. It can also
be used to switch private T1 or E1
circuits not connected to the public
telephone system.
With its latching relay feature,
the Universal Serial Card forwards
all traffic in the event of a power
failure and, when used as a copper
path, operates independent of
speed and protocol. And there’s no
complicated programming!
all traffic in the event of a power
failure and, when used as a copper
path, operates independent of
speed and protocol. And there’s no
complicated programming!
As with the Front Interface
Cards, the Universal Serial Cards
install in the front of the PSSII
chassis and can even be mounted
alongside the Front Interface Cards.
install in the front of the PSSII
chassis and can even be mounted
alongside the Front Interface Cards.
In a daisychain configuration,
you can put up to 16 Front Interface
or Universal Serial Cards in each
slave chassis. The master chassis
can be populated with up to 16 of
these cards plus one Terminal
Display Card.
Management cards
or Universal Serial Cards in each
slave chassis. The master chassis
can be populated with up to 16 of
these cards plus one Terminal
Display Card.
Management cards
For managing the chassis, you’ll
need either a Management Control
Card or a Terminal Display Card.
Card or a Terminal Display Card.
The Management Control
Card (SM902C or SM904C) provides
Attaching ears are slotted at the standard EIA location for a 7" panel.