CABLE SPECIFICATIONS
The physical characteristics of the media cable must meet or exceed IEEE 802.3
specifications.
Copper Cable and Connector
Category 3 or better twisted-pair copper wire is required. Either shielded twisted-pair (STP) or
unshielded twisted-pair (UTP) can be used. DO NOT USE FLAT OR SILVER SATIN WIRE.
CATEGORY 3:
Gauge
24 to 22 AWG
Attenuation
11.5 dB/100m @ 5-10 MHz
Maximum Number of Nodes
2 nodes
Maximum Cable Distance
100 meters
RJ-45 Pin-outs
Pin 1=TD+, Pin 2=TD-,
Pin 3=RTD+, Pin 6=RD-
Twisted pair connection requires two active pairs configured as straight through. The two
active pairs in an Ethernet™ network are pins 1 & 2 and pins 3 & 6. Use only dedicated wire
pairs (such as blue/white & white/blue, orange/white & white/orange) for the active pairs.
NOTE: Crossover cable used for transceiver-to-transceiver or transceiver-to-DTE; Straight-
through cable used for transceiver-to-hub, switch, or any hub crossed over,.
AUI (DB-15) Interface
INSTALLATION
Set Switches
NOTE: UP enables the indicated function
on the 4-position switch located to the right
of the 10BASE-T connector and DOWN
disables the indicated function.
1
SQE Test: Controls SQE test
function. Disable this function when connecting to IEEE 802.3
compliant repeaters. Enable this function when connecting to other
devices. Default is enabled (UP).
2
LinkALERT: Enables the LinkALERT function. With the switch down,
the transceiver implements the standard Link Integrity Test. Default
is enabled (UP).
3
Polarity Correction: Corrects for a receive pair with reversed
polarity. In both switch positions reversed polarity is indicated by 5
Status LED blinks. Default is enabled (UP).
4
Extended Distance: Increases receiver sensitivity to allow operation
with high loss cables or data grade cables longer than 100 meters.
NOTE: Do not use this feature unless necessary; Extended Distance
makes the transceiver more susceptible to plant noise and crosstalk.
Default is disabled (DOWN).
Install Cable
NOTE: See page 6 for cable specifications and configurations.
NOTE: KEEP TWISTED PAIR RUNS AS SHORT AS POSSIBLE.
1.
Locate or build 10BASE-T compliant cables with male RJ-45 plug
connectors at both ends.
2.
Connect male RJ-45 plug connector at one end of cable to
transceiver RJ-45 jack connector.
3.
Connect male RJ-45 plug connector at other end of cable to
10BASE-T device RJ-45 jack connector.
Connect to Power
The E-TBT-MC03 is powered through the AUI connection.
Twisted
Pair #1
Twisted
Pair #2
Crossover Cable
Twisted
Pair #1
Twisted
Pair #2
Straight Through Cable
Parameter
Minimum
Typical
Maximum
Transmit
Transmit threshold voltage level:
-140mV
-170mV
-190mV
Transmit turn on delay:
100ns
Transmit steady propagation delay:
15ns
50ns
Transmit loop back start up delay:
500ns
Transmit turn off to data idle:
400ns
2100ns
SQE test delay:
0.6 µ sec
1.6 µ sec
SQE test duration:
0.5 µ sec
1.0 µ sec
1.5 µ sec
Receive
Receive turn on delay:
350ns
Receive steady propagation delay:
15ns
50ns
Differential output voltage (RX(-/+)):
(+/-)550mV
(+/-)1200
Differential output voltage (col(-/+)):
(+/-)550mV
(+-)1200
Differential output rise time (RX(-/+), col(-/+)): 4ns
Differential output fall time (RX(-/+), col(-/+)): 4ns
Collision
Time for SQE to deact. after collision:
450ns
700ns
Collision frequency:
8.5MHz
11.5MHz
Collision pulse duty cycle:
40%
50%
60%
SQE test delay:
0.6 µ sec
1.6 µ sec
Jabber activation delay:
20ms
70ms
150ms
1 2 3 4
