Omnitron Systems Technology iConverter T3/E3 Plugin Module User Manual

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ON-BOARD DIP-SWITCHES

OFF

<225

OFF

CEN

FEN

OFF

STS-1

>225

CDIS

FDIS

PRBS

Figure E: Board Mounted DIP-Switches

“T3”, “E3” and “STS-1” - Select Protocol
When the “T3” DIP-switch is in the ON position, the T3 protocol is selected. When the

“E3” DIP-switch is in the ON position, the E3 protocol is selected. When the “STS-1”

DIP-switch is in the ON position, the STS-1 protocol is selected.
Only one of the three DIP-switches may be in the ON position at any one time. The

default setting of the module is T3.
“<225”/“>225” - Coax Build-Out Distance
When this DIP-switch is in the OFF position, a distance of less than 225 ft. is selected.

When in the ON position, a distance of 225 ft. or higher is selected. Select the

appropriate distance for your application.
“CEN”/“CDIS” and “FEN”/“FDIS” - Port Control
When both DIP-switches are in the OFF position, the ports are enabled. When the

“CEN”/”CDIS” is in the ON position, the coax port is disabled. When the “FEN”/”FDIS”

is in the ON position, the fiber port is disabled.
“PRBS” - Pseudo Random Pattern Generator
When in the ON position, the converter forces Pseudo Random pattern out of the

Coax-Out port. The data received at Fiber-In is discarded and the data at Coax-In is

passed through to Fiber-Out.
Note: Some combinations of DIP-switch settings are illegal, and will be indicated

by the Fiber Test “TST” LED blinking quickly three times followed by a pause.

2) INSTALL MODULE IN CHASSIS AND CONNECT CABLES

a. Carefully slide the module into an open slot in the chassis. Align the module with

the installation guides and ensure that the module is firmly seated against the

backplane. Secure the module by fastening the front panel thumbscrew (push in and

turn clockwise to tighten) to the chassis front.

Verify the “Pwr” LED is ON (indicating

the chassis is powered).

b. When using the SFP model (8759-0), insert the SFP Fiber transceiver into the Port

1 SFP receptacle on the T3/E3 converter (see the 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 BNC cables to the T3/E3 converter and attach the other end of the cables

to appropriate network equipment. The Transmit must attach to the Receive and the

Receive must attach to the Transmit.

“CLB” - Coax Loopback
This DIP-switch facilitates the testing of the coax cables. When the “CLB” DIP-switch

is in the ON position, it sets the coax port to a Local Coax Loopback Mode (Figure C)

and the “CLB” LED is turned on. When in this mode, data received at the BNC-In is

forwarded to the BNC-Out and the Fiber-Out. If no data is received at BNC-In, an AIS

pattern is transmitted out both BNC-Out and Fiber-Out. By returning the DIP-switch to

the OFF position, the unit resumes normal operation.

Figure C: Coax Loopback and DIP-Switch Settings

“FLB” + “CLB” - Remote Loopback Mode
When both the “FLB” and “CLB” DIP-switches are in the ON position, they force the

remote unit at the other end of the fiber link to loop back its fiber and coax ports (Figure

D). This facilitates test of the fiber cables and the remote unit without having to physically

set DIP-switches on the remote unit. While in this mode, the local unit’s BNC is set to

a local loopback, and its “FLB” and “CLB” LEDs are turned on.
While in the remote loopback mode, the local unit sends a test pattern to the remote

unit. This pattern forces the remote unit into the loopback mode and is also returned

back to the local unit. When forced into the remote loopback mode, the remote unit’s

“FLB” and “CLB” LEDS blink slowly (1Hz).
When the test pattern is received successfully at the local unit’s Fiber-In, the “TST” LED

blinks rapidly (10Hz). Any other data causes slow blinking (1Hz) on the “TST” LED. If

no data is returned to Fiber-In, the LED is turned OFF.
Returning both DIP-switches to the OFF position, causes the local and remote units to

resume normal operation.

Figure D: Remote Loopback and DIP-Switch Settings

“FAIS” - Force 1s to Fiber (AIS)

When the “FAIS” DIP-switch is in the ON position, an “all ones” pattern is forced out

the Fiber-Out port. The Coax-In data is discarded and Fiber-In data is passed through

to BNC-Out. By returning the DIP-switch to the OFF position, the unit resumes normal

operation.
“CAIS” - Force 1s to Coax (AIS)
When the “CAIS” DIP-switch is in the ON position, an “all ones” pattern is forced out

the BNC-Out port. The Fiber-In data is discarded and BNC-In data is passed through

to Fiber-Out. By returning the DIP-switch to the OFF position, the unit resumes normal

operation.