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About McBasic 10/100

McBasic 10/100™

is a low-cost, standalone,

IEEE 802.3 single-conversion media 

converter which converts between:

• 10Base-T twisted pair and 

10Base-FL single- or multi-mode fiber

• 100Base-TX twisted pair and 

100Base-SX multi-mode fiber

• 100Base-TX twisted pair and 

100Base-FX single-mode fiber

McBasic 10/100

is a 1U high, standalone unit that includes diagnostic

LEDs for each port and an internal, universal (100/240 VAC) power supply.

McBasic 10/100

Installing McBasic 10/100

McBasic 10/100

comes ready to install.  The only adjustments that may

need to be made after installation are:

Configuring the unit for its mode of operation and other features.

Setting the twisted pair port for a crossover workstation or 

pass-through repeater/hub connection.

To install 

McBasic 10/100

, first make sure that the unit is placed on a

suitable flat surface, leaving some space at the back of the unit to

accommodate the exhaust fan.  Attach the cables between the 

McBasic 10/100

and each device that will be interconnected, then plug

the unit into a reliable, filtered power source.

NOTE:

All network cables must be connected for link LEDs to glow.

1

McBasic 10/100

by IMC Networks

Installation

Guide

Q U I C K   S T A R T

Installation

1

Configuration

2

Modes of Operation

2

Crossover/Pass-Through

4

LED Indicators

5

Technical Support

5

Specifications

6

Warranty

6

Safety Certifications

7

Configuring McBasic 10/100

McBasic 10/100

features an 8-position DIP switch

for configuring the unit.  This switch is accessed

through a cut-out in the bottom of the unit.  After

configuring the switch, power down the unit and

then power up again for the DIP switch changes to

take effect.  The following table provides simplified

definitions of the function of each switch.  More
detailed information follows

.

M

C

B

A S I C

1 0 / 1 0 0   M

O D E S O F

O

P E R A T I O N

McBasic 10/100

features three possible “modes” of operation:  

Auto-Negotiation/PNP mode

,

Force-10 mode 

and 

Force-100 mode

.  

McBasic 10/100

should be configured for one of these modes (factory default is

AN/PNP

mode).  Refer to pages 3-5 for information on 

Link Fault Detection

.

Auto-Negotiation mode

, also known as 

PNP

, is the mode most ideally

suited for the 

McBasic 10/100

.  In this mode, the converter will 

optimally and automatically configure for speed (10 or 100 Mbps)

depending on the capabilities of the end stations.
To enable 

Auto-Negotiation/PNP

mode, set switch 

S6

to the 

ON

position, with switches 

S7

and 

S8

in the 

OFF

position.

• In 

Force-10 mode

McBasic 10/100 

permits the transmission of valid 

10 Mbps traffic only.  In this mode, the unit acts as a 10Base-T/ 

10Base-FL media converter; 100 Mbps signals 

are not accepted

.

To enable 

Force-10

mode, set switch 

S7

and 

S8

to the 

ON

position,

with switch 

S6

in the 

OFF

position.

2

LFD

S5

Link Fault Detection (Refer to page 4 for configuration

OFF

instructions.  

Available only in 

Force

modes)

PNP

S6

Auto-Negotiation Mode 

(

Plug-N-Play)

ON

(Valid only when 

Force

mode is disabled)

Force

S7

Force Mode 

— Forces 

McBasic 10/100

to operate 

OFF

at 10 or 100 Mbps as determined by 

S8

100 or 10 S8

When 

ON

McBasic 10/100

operates at 10 Mbps

OFF

When 

OFF

McBasic 10/100

operates at 100 Mbps

S8 is only valid in Force Mode, i.e. when S7 is ON

Note

S1

S4

are factory configured — 

DO NOT CHANGE

M

ODE

S

WITCH

F

UNCTION

D

EFAULT

N O T E

McBasic 10/100

cannot be manually set for Half- or Full-Duplex.  Duplex

is determined by the devices to which 

McBasic 10/100

is connected.

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