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xinxo
23.03.2016, 16:56
SHES TRANSRECEIVER (TE RI ) I CILI MUNDESON INTERNETIN NE DISTANCE DERI NE 100 METRA NGA PORTAT E MODEMIT ADSL ME CABELL TE LIRE TELEVIZIONI OSE (KAOKSIAL). TEL : 0698963943
SHIKO DETAJET NE ANGLISHT:
CentreCOM
Micro
Transceivers
CentreCOM
Micro
Transceivers
AT-MX10
10BASE-2 MAU
AT-MX10S

10BASE-2 MAU, SLIM-LINE
AT-MX20T
10BASE-T MAU
AT-210T
10BASE-T MAU
AT-210TS
10BASE-T MAU, SLIM-LINE
IEEE 802.3 COMPLIANT/ETHERNET COMPATIBLE

IEEE 802.3 compliant and Ethernet
Version 1.0 and 2.0 compatible

Direct Attachment Unit
Interface (AUI) connection

Slim-line versions (AT-MX10S,
AT-210TS) for improved
mechanical fit for Macintosh,
Sun SPARC stations and
IBMRS/6000 workstations

Switch-selectable SQE test
(all models) and LED (AT-MX10,
AT-MX10S, AT-210T, AT-210TS)

Polarity detection and correction
(AT-MX20T, AT-210T, AT-210TS)
and LED (AT-210T, AT-210TS)

Link integrity test function
and LED (AT-MX20T, AT-210T,
AT-210TS)

Five year warranty
The CentreCOM Micro Transceivers are
10Base-2 and 10Base-T compliant
transceivers designed to reduce Ethernet
cabling costs. Compact size allows these
transceivers to connect directly to the
workstation, bringing thin Ethernet or
Unshielded Twisted Pair (UTP) wiring
directly to the workstation. With UTP
and inexpensive coax network media,
distances up to 100 meters between workstations
can be supported using UTP, and
up to 185 meters using coax.
The 10Base-2 compliant AT-MX10 and
AT-MX10S transceivers use an industry-
standard Ethernet transceiver chip that
guarantees IEEE 802.3 compliance. The
10Base-T compliant AT-MX20T, AT-210T
and AT-210TS transceivers are also guaranteed
compliant by the use of standard ICs.
On all models Signal Quality Error
(SQE)/Heartbeat test can easily be enabled
or disabled via an externally accessible
switch. Additionally, all models have
integral jabber lock-up prevention circuitry
and a loopback function. This function
emulates coaxial media where transmitted
packets are looped back to the receive
side. Local Area Network (LAN)
controllers can use the loopback feature to
determine if a Media Attachment Unit
(MAU) is connected and operational.
The AT-MX20T, AT-210T and AT-210TS
transceivers incorporate other functions
that offer improved network reliability for
workstations. The 10Base-T link integrity
test function provides a continuous test of
the connection to the multiport repeater.
A test pulse is periodically transmitted and
expected at the companion transceiver’s
receive side. If the pulse is not seen on the
receive side, the transceiver is placed into
link test fail mode. Normal operation of
the transmit side is inhibited and the
“Link” LED is turned off. Normal
operation is resumed when the link is
re-established by the reception of a valid
packet or two valid link pulses.
10Base-T transceivers also address the
polarity of the receive pair wiring. In less
than one second, the UTP transceiver
automatically “rolls” the wire pair and
allows for the proper operation of the
transceiver. Also, the “Polarity” indicator
on the AT-210T and AT-210TS transceivers
is not illuminated when the circuitry has
transposed the receive pair.
SQE/Heartbeat test status is indicated by
LEDs on the AT-MX10, AT-MX10S,
AT-210T and AT-210TS transceivers. The
AT-MX10 and AT-MX10S transceivers
utilize a two-colored LED that indicates
the presence of Data Terminal Equipment
(DTE) power in addition to the SQE test.
The AT-210T and AT-210TS both have a
single LED that indicates the status of the
SQE test switch.

AT-MX10, AT-MX10S, AT-MX20T, AT-210T, AT-210TS

STATUS INDICATORS TWISTED PAIR INTERFACE
AT-MX10/AT-MX10S: Transmitter: |Typical |Range
Power/HB Two-color Heartbeat LED
Peak Differential
AT-MX20T: Signal Amplitude 2.5 V 2.2 to 2.8 V
Power Power is present from the DTE Transmitter Jitter ±1.5 ns ±2 ns
Transmit Indicates packet is being
Harmonics Content 27 dB Down
transmitted to the media
Common Mode
Receive Indicates packet is being received
Output Voltage
from the media
Link Indicates a valid link exists
Start-Up Delay 100 ns 200 ns
Steady State Delay 100 ns 200 ns
AT-210T/AT-210TS:
Power Power is present from the DTE Silence
Link Indicates a valid link exists Voltage ±50 mV
Specifications

ORDERING INFORMATION
Part Number Description
AT-MX10-05 10Base-2 MAU
AT-MX10S-05 10Base-2 MAU Slim-Line
AT-MX20T-05 10Base-T MAU
AT-210T-05 10Base-T MAU
AT-210TS-05 10Base-T MAU Slim-Line
SQE Test SQE/Heartbeat test enabled
Polarity Automatic polarity reversal has
not occurred
AUI INTERFACE
Transmitter: |Typical |Range
Threshold Voltage -200 mV -175 to -225 mV
SQE Test
Delay 800 ns 600 to 1600 ns
Duration 1000 ns 500 to 1500 ns
Collision
Indication Delay 200 ns 900 ns
Assert Delay 200 ns 900 ns
Jabber
Setup 45 ms 20 to 100 ms
Recovery
Receiver:
Start-Up Delay
450 ms
500 ns
250 to 750 ms
Steady State Delay 100 ns 200 ns
Signal Amplitude ±800 mV ±550 to
±1200 mV
Loopback
Steady State Delay 100 ns
Start-Up Delay 100 ns 500 ns
COAXIAL INTERFACE
Input Impedance > 100K ½
Coaxial Tap Capacitance < 6 pf
Input/Output
Voltage: |Typical |Range
DC Offset -0.1 V -0.5 to 0 V
AC Offset 1.86 Vp-p 1.2 to 2.4 Vp-p
Transmit Rise/
Fall Time 25 ns ±5 ns

TWISTED PAIR CONNECTOR (RJ45)
Pin No. Function
1 +TD
2 -TD
3 +RD
4 Not Used
5 Not Used
6 -RD
7 Not Used
8 Not Used
Duration 16 ms 8 to 130 ms
Link Test Pulse 100 ns 80 to 130 ns
Output Impedance 100 ½ 95 to 105 ½
Receiver:
Receiver Threshold -400 mV -350 to -450 mV
Input Impedance 100 ½ 95 to 105 ½
Differential Noise
Rejection 300 mV
POWER CHARACTERISTICS
Isolation:
Breakdown Voltage
AT-MX10/AT-MX10S
500 V rms 50/60 Hz for 1 min
AT-MX20T/AT-210T/AT-210TS
1500 V rms 50/60 Hz for 1 min
Supply: |Typical |Range
Voltage 12 V 11.4 to 12.6 V
Current 300 mA 500 mA
PHYSICAL CHARACTERISTICS
Dimensions:
Standard 6.4 cm x 4.6 cm x 2.0 cm
(2.5 in x 1.8 in x 0.8 in)
Slim-line 6.9 cm x 4.3 cm x 2.5 cm
(2.7 in x 1.7 in x 1.0 in)
Weight:
Standard 70 g (2.4 oz)
Slim-line 73 g (2.5 oz)
Temperature:
Operating 0° to 50° C
Storage -20° to 60° C
Relative Humidity: 5% to 80% noncondensing
Electrical/Mechanical Approvals:
EMI FCC Class A, TUV, Vfg-B
Safety UL, CSA, TUV-GS
AT-MX10S Electrical/Mechanical Approvals:
EMI FCC Class B, TUV, Vfg-B
Safety UL, CSA, TUV-GS



Cel. : 0698963943