maximum segment length can be determined by
measuring the segment attenuation and comparing it
to the worst case budget.
Fiber Optic Segment Attenuation
At an 850-nm wavelength, the segment attenuation
can be no more than the following:
•
13.0 dB for 50/125
µ
m cable
•
16.0 dB for 62.5/125
µ
m cable
•
19.0 dB for 100/140
µ
m cable
OPERATING SPECIFICATIONS
Cabletron Systems reserves the right to change these
specifications at any time without notice.
Fiber Optic Interface
Fiber Optic Transmitter Power
Power Supply
Receive Sensitivity:
-29.5 dBm worst case
Peak Input Power:
-8.2 dBm worst case
Bit Error Rate:
Better than 10
-9
error rate
Transmitter Peak
Wavelength:
820 nm typical
790 nm rate minimum
860 nm maximum
Spectral Width:
75 nm maximum
Rise Time:
10 nsec maximum
Fall Time:
10 nsec maximum
50/125
µ
m:
-13.0 dBm
16.5 dBm worst case budget
62.5/125
µ
m:
-10.0 dBm
19.5 dBm worst case budget
100/140
µ
m:
-7.0 dBm
22.5 dBm worst case budget
Note:
The transmitter power and receive sensitivity
levels are peak power levels. To convert to average
power levels, subtract 3 dBm.
Input power, USA:
100 to 125 Vac, 50 to 60 Hz
Input power, UK:
220 to 240 Vac, 50Hz
Input power, Europe: 200 to 220 Vac, 50 Hz
Output power:
0.8 A at 12 Vdc
RJ45 Port
The TPFOT-2 adapter has a switch to set the RJ45 pin
configuration for crossover (
X
) or straight-through (
=
)
operation as shown below.
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)
Safety
Designed in accordance with UL1950, CSA 22.2
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.
Immunity
Meets the requirements of EN 50082-1, including
Electrostatic Discharge (IEC 801-2), Radiated
Susceptibility (IEC 801-3), and Electric Fast Transient
(IEC 801-4).
Note
: It is the responsibility of the person who sells the
system to which the TPFOT-2 adapter will be a part to
ensure that the total system meets allowed limits of
conducted and radiated emissions.
INSTALLATION
Unpack the TPFOT-2 adapter and verify that the
following items were received.
•
One TPFOT-2 10BASE-T to 10BASE-FL/FOIRL
Extended Media Adapter
•
One wall mount transformer with power cord
•
One 1.5-inch x 3-inch Velcro strip
•
Two 6-inch tie wraps
•
Two cable mounts
Mounting the TPFOT-2 Adapter
Use the adhesive backed Velcro strips to attach the
TPFOT-2 adapter to a convenient mounting surface.
Connecting and Applying Power
Caution:
Do not use a power cord/converter other
than the one shipped with the TPFOT-2 adapter. Not
all converters supply the same voltage and current.
Using the wrong converter can damage the adapter.
The TPFOT-2 adapter has an ac-to-dc converter.
Connect the TPFOT-2 adapter to an appropriate ac
power source. The TPFOT-2 LANVIEW PWR indicator
should light, indicating that the TPFOT-2 adapter is
receiving power and is ready for operation.
Attaching the Fiber Optic Cables
Connect one fiber optic cable from the TPFOT-2 TX
port to the Ethernet device RX port. Connect another
fiber optic cable from the TPFOT-2 RX port to the
Ethernet device TX port.
Attaching a Twisted Pair Cable
The TPFOT-2 adapter has a switch to select either a
crossover (X) or straight-through (=) pin configuration
for the RJ45 port. When attaching a twisted pair cable,
check the pin configuration of the RJ45 crossover
connector on the device to be connected. Make sure
that the twisted pair TX and RX signal pairs connect
as follows:
Cable Strain Relief
Secure the data cables and the power cord to reduce
the possibility of network interruption. The TPFOT-2
comes with adhesive backed mounting brackets and
tie wraps for securing the TPFOT-2 cables.
Note:
The TPFOT-2 power source is to be certified
for use in the country of installation with a standard
(SELV) output of 12 Vdc, and capable of providing a
minimum output of 800 mA (connector polarity: cen-
ter pin positive, sleeve negative). The output connec-
tor is to be compatible with TOTAL POWER or
MORFOR RJ-01-E connectors.
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
1
2
3
4
5
6
8
7
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
X
=
RX+
RX-
TX+
TX-
TX+
TX-
RX+
RX-
