Omnitron Systems Technology IConverter X21 Manuale utente

iConverter X21 Standalone Module USER MANUAL

The Omnitron iConverter®X21 is a serial to fiber media converter featuring several

configuration modes enabling connection to a wide variety of X.21 and RS-530

applications. Data rates of up to 8Mbps are supported.

The X21 supports standard DCE

sourced timing and terminal timing

modes. The included adapter cable

accommodates different connector

gender types. The X21 features

local loopback on the serial and fiber

ports to facilitate testing and

installations.

INSTALLATION PROCEDURE

1) Configure DIP-Switches

2) Install Standalone Module and Connect Cables

3) Verify Operation

1) CONFIGURE DIP-SWITCHES

FRONT PANEL DIP-SWITCH

SW1 - DCE/DTE

When this DIP-switch is in the “DCE” (default) position, the serial port is configured to

connect to a DCE device. When the DIP-switch is in the “DTE” position, the serial port

is configured to connect to a DTE device.

SW2 - SET CLOCK (RXC) POLARITY

When this DIP-switch is in the

Receive Clock “RC” (default)

position, the clock edge used

tosamplethedataontheserial

port is defined by the TIA/EIA-

334-C specification. When the

DIP-switch is in the Receive

Clock Inverted “Inv” position,

the data on the serial port is

sampled on the inverted clock

edge.

PIN Signal Name Interchange

Circuit

(AKA)

Direction Notes

DTE DCE

01 Transmit +

Transmit - T

(TXD) IN OUT

07 Control +

Control - C

(RTS) IN OUT

12 Receive +

Receive - R

(RXD) OUT IN

03 Indication +

Indication - I

(CTS) OUT IN

09 Signal Element Timing +

Signal Element Timing - S

(RXC) OUT IN

14 DTE Signal Element Timing +

DTE Signal Element Timing - X

(TXC) IN OUT

06 Shield Ground Sheild N/A Connect to Chassis Ground

15 Signal Ground G

(GND) N/A Connect to Logic Ground

05 N/A Spare Pin

Figure E: Serial Port Signal Definitions

3) VERIFY OPERATION

Once the module has been installed and configured per steps 1 and 2, verify the

module is operational by viewing the LED indicators.

The Power LED indicates the module is receiving power.

The Fiber Optic link LED indicates the fiber optic connection has been established.

Verify the serial port is configured for the correct mode of operation. Check the DCE/

DTE and TD/RD LEDs.

LED Function

"Legend" Color OFF State ON State

Power

"Pwr" Green No power Module has power

Fiber Optics

"P1" Green No Fiber Link On: Fiber signal detected

Blinking: Activity

Fiber Optics

"Err" Amber No error detected Error detected on fiber

(No clock or corrupted messages)

Serial Port

"DCE" Green Not configured for DCE-facing Configured for connectionto a DCE device

Serial Port

"DTE" Green Not configured for DTE-facing Configured for connection to a DTE device

Timming Mode

"TD/RD" Green No activity / No clock detected Blinking: Activity

Loopback

"Local LB"" Amber Loopback/Test mode not

enabled Blinking: Unit in loopback

Figure F: LED Indicators

Form 040-08840-001 A 3/08

Omnitron Systems Technology * 140 Technology Dr. #500 * Irvine, CA92618

949.250.6510 tel * 949.250.6514 fax * www.omnitron-systems.com

SW1

SW4

Down

Bank 1

SW1

SW4

Down

Front Panel

Figure A: DIP-Switch Location

2) INSTALL STANDALONE MODULE AND CONNECT CABLES

a. The X21 Serial Media Converter is available in tabletop and wall-mounting models.

For wall-mounting, attach the unit to a wall, backboard or other flat surfaces. For

tabletop installations, place the unit on a flat level surface. Attach the rubber feet to

the bottom of the unit to prevent the unit from sliding. Make sure the unit is placed

in a safe, dry and secure location.

To power the unit using theAC/DC adapter, connect the AC/DC adapter to the AC

outlet. Then connect the barrel plug at the end of the wire on theAC/DC adapter to

the 2.5mm DC barrel connector (center-positive) on the chassis. Confirm that the

unit has powered up properly by checking the power status LED located on the

front of the unit.

To power the unit using a DC power source, prepare a power cable using a two-

conductor insulated wire (not supplied) with a 14 AWG gauge minimum. Cut the

power cable to the length required. Strip approximately 3/8 of an inch of insulation

from the power cable wires. Connect the power cables to the standalone unit by

fastening the stripped ends to the DC power connector.

Connect the power wires to the DC power source. The Power LED should indicate

the presence of power.

WARNING: Note the wire colors used in making the positive and negative

connections. Use the same color assignment for the connection at the DC

power source.

NOTE: If mounting with a safety ground attachment, use the safety ground

screw at the rear of the unit.

b. When using the SFP model (8859-0), insert the SFP Fiber transceiver into the Port

1 SFP receptacle on the X21 converter (see SFP Data Sheet 091-17000-001 for

supported transceivers).

NOTE: The release latch of the SFP Fiber transceiver must be in the closed

(up) position before insertion.

c. Connect the included adapter cable to the serial port on the X21 converter. Use

the appropriate gender plug to attach the X.21 device.

d. Connect an appropriate multimode or single-mode fiber cable to the fiber port of

the installed module. It is important to ensure that the transmit (TX) is attached to

the receive side of the device at the other end and the receive (RX) is attached to

the transmit side. Single-fiber (SF) media converter models operate in pairs. The

TX wavelength must match the RX wavelength at the other end and the RX

wavelength must match the TX wavelength at the other end.

SERIAL PORT CONNECTOR

The serial port is a DE-15 female connector with the following pin-out configuration.

4 1

3 25

789

Figure D: Serial Port Connector Pin-out for X.21 and RS-530

SW3 - DTE SET CLOCK (TXC) POLARITY

When this DIP-switch is in the Terminal Timing Clock “TTC” (default) position, the clock

edgeusedtosamplethedataonthe serial port is defined by theTIA/EIA-334-Cspecification.

When the DIP-switch is in the Terminal Timing Clock Inverted “Inv” position, the data on

the serial port is sampled on the inverted clock edge.

SW4 - LOOPBACK

When “L-LB” is selected, the serial port data signals are looped back to the attached

device. At the same time, the fiber port is looped. If the module has Terminal Timing

enabled (see DIP-SWITCH BANK 1), the clock signals are also looped back to the

attached device.

Switch Down Up

SW1 DCE:

DCE Interface enabled DTE:

DTE Interface enabled

SW2 RC:

RXC Clock polarity normal Inv:

RXC Clock polarity inverted

SW3 TTC:

TXC Clock polarity normal Inv:

TXC Clock polarity inverted

SW4 Norm:

Loopback disabled L-LB:

Loopback enabled

Figure B: Front Panel DIP-Switches

DIP-SWITCH BANK 1

SW1 -TERMINAL TIMING

When this DIP-switch is in the “Off” (default) position, Terminal Timing is disabled.

WhenthisDIP-switchisinthe“On”position,TerminalTimingisenabled. WhenTerminal

Timing disabled, it uses the ‘Signal Element Timing’ clock (SET clock, circuit S, X.21

pin pair 6, 13) as supplied by the DCE device to time Transmit data (TXD) and Receive

data(RXD).ThisiscalledContra-directionalTiming. When TerminalTimingis enabled,

it uses ‘DTE Signal Element Timing’ clock (DTE SET clock, circuit X, X.21 pin pair 7,

14) as supplied by the DTE device to time TXD, and uses ‘Signal Element Timing’

clock to time RXD. This is called Co-directional Timing.

When Terminal Timing is used, both the local and remote modules must be set to use

Terminal Timing, as well as the devices connected to each module. All four units must

be in Terminal Timing Mode.

Switch Down Up

SW1 Off:

Terminal Timing disabled On:

Terminal Timing enabled

SW2 Off:

Reserved On:

Reserved

SW3 Off:

Reserved On:

Reserved

SW4 Off:

Reserved On:

Reserved

Figure C: Side DIP-Switches

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