Twisted Pair Segment Length
The IEEE 802.3 10BASE-T standard requires that
devices support a 100-meter minimum segment length
when using a 10BASE-T compliant medium.
If the signal loss is less than 11.5 dB at all frequencies
between 5 and 10 MHz, support for longer segments
of up to 200 meters is possible.
AUI Cable
The AUI cable you use to connect the TPT-D4 to an
Ethernet device can be up to 50 meters long and must
comply with IEEE 802.3 specifications.
OPERATING SPECIFICATIONS
Cabletron Systems reserves the right to change these
specifications at any time without notice.
Power Supply
Input Current:
500 mA
Input Voltage:
12.0 Vdc typical; 9.5 Vdc min;
15.75 Vdc max
AUI Connector
The AUI connector is a 15-Position D-type receptacle
shell connector attached to the TPT-D4 case.
RJ45 Port
The TPT-D4 has a switch at each RJ45 port that lets
you select a crossover (X) or straight-through (=) pin
configuration.
Operating Environment
Operating Range:
5
°
to 40
°
C (41
°
to 104
°
F)
Heat Output:
17 Btu/hr
Humidity Range:
5% to 95% (non-condensing)
Storage Range:
-30
°
to +80
°
C (-22
°
to 176
°
F)
Pos 8 Logic Ref.
Pos 7 No Connection
Pos 6 Power Return
Pos 5 R
Pos 4 Logic Ref.
Pos 3 Tr
Pos 2 Col
Pos 1 Logic Ref.
Pos 15 No Connection
Pos 14 Logic Ref.
Pos 13 Power (+12 Vdc)
Pos 12 Receive -
Pos 11 Logic Ref.
Pos 10 Transmit -
Pos 9 Collision -
1 2 3 4 5 6 7 8
Pin 1 RX+
Pin 2 RX-
Pin 3 TX+
Pin 4 No Connection
Pin 5 No Connection
Pin 6 TX-
Pin 7 No Connection
Pin 8 No Connection
X
Pin 1 TX+
Pin 2 TX-
Pin 3 RX+
Pin 4 No Connection
Pin 5 No Connection
Pin 6 RX-
Pin 7 No Connection
Pin 8 No Connection
=
Safety
This unit meets the requirements of UL 1950,
CSA C22.2 No. 950, and EN 60950.
Emissions
Meets the requirements of EN 55022 Class A; FCC
Part 15, Class A; and VCCI Class I emission limits.
Note
: It is the responsibility of the person who sells
the system to which the TPT-D4 will be a part to
ensure that the total system meets allowed limits of
conducted and radiated emissions.
Immunity
Meets the requirements of EN50082-1, IEC 801-2,
IEC 801-3, and IEC 801-4.
INSTALLATION
When you install the TPT-D4 transmitter, be sure to
observe the operating requirements and
specifications listed previously. To install the TPT-
D4, proceed as follows:
Caution:
To prevent equipment damage
,
set the
SQE and MIN/MAX switches using a nonconductive
probe, or disconnect the transceiver AUI connector
to remove power from the device.
1.
Set the SQE Switch.
Note:
The SQE (Signal Quality Error) test function
must be disabled if you connect the TPT-D4
transceiver to a repeater or to an Ethernet Version 1
device. Devices that do not support the SQE test
function will interpret the SQE test pulse as a
collision. In addition, some of the Version 2
equipment does not support the SQE test.
The SQE switch is a two position switch located on
the top of the transceiver. The SQE switch is factory
set to the ON position ( ). To disable the SQE test
function, slide the SQE switch to the OFF position
( ), as indicated on the front of the transceiver.
2.
Set the MIN/MAX Switch.
The MIN/MAX switch sets the time duration that the
TPT-D4 waits for data before switching to the
redundant port. MIN equals approximately 2
seconds and MAX equals approximately 10
seconds. If you attach the TPT-D4 to a high-activity
network, select the MIN setting. If you attach the
TPT-D4 to a low-activity network, select the MAX
setting.
3.
Set the Crossover Switches.
A crossover switch at each of the two RJ45 ports
allows you to select a crossover (X) or straight-
through (=) pin configuration for that RJ45 port.
When you attach a twisted pair cable to a TPT-D4
RJ45 port, check the pin configuration of the RJ45
connector on the device to be connected. Then set
the associated TPT-D4 port crossover switch so the
twisted pair TX and RX signal pairs connect as
follows:
4.
Connect the TPT-D4 to the network as follows:
a.
Attach a twisted pair cable from the
transceiver to the network device.
b.
Attach the AUI cable to the Ethernet device.
c.
Check the LANVIEW indicators. The PWR
LED should be lit to indicate that the
transceiver is receiving power through the
AUI cable. The LNK LEDs should be lit to
indicate that the twisted pair ports are
linked to the network device.
USING LANVIEW
LANVIEW is Cabletron Systems built-in diagnostic
and status monitoring system.
Power (PWR)
When this green LED is on, the TPT-D4 transceiver
is receiving power through its AUI connector. If the
PWR LED is off, power is not being received or the
dc-to-dc converter in the transceiver has failed.
Signal Quality Error (SQE)
When this yellow LED is on, the transceiver SQE
test function is selected. The SQE test is used to
ensure that the collision presence circuit and the
path between the Ethernet device and the
transceiver are operational.
Transmit (XMT)
When this green LED flashes, the transceiver is
transmitting data. The LED flash is pulse-stretched
for viewing effect. The LED is off when the device is
active but not transmitting.
RX+
RX-
TX+
TX-
TX+
TX-
RX+
RX-
