Omnitron Systems Technology iConverter X21 User manual

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
11
01 Transmit + Transmit - T (TXD) IN OUT
02
07 Control + Control - C (RTS) IN OUT
08
12 Receive + Receive - R (RXD) OUT IN
13
03 Indication + Indication - I (CTS) OUT IN
04
09 Signal Element Timing + Signal Element Timing - S (RXC) OUT IN
10
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
Up
Down
Bank 1
SW1 SW4
Up
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
10
6
15
11
3 25
789
14
13
12
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