B&B Electronics 1140 User Manual

Not Recommended for New Installations.

Please contact Technical Support for more information.

Miniature Fiber Optic Modem

With V.54 Diagnostics

Model 1140

Documentation Number 11401198

B&B Electronics Mfg. Co. Inc.

707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350

PH [phone] -- FAX [phone]

Internet:

http://www.bb-elec.com

[e-mail]

[e-mail]

B&B Electronics -- March 1998

Documentation Number 11401198 Manual Cover Page

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH [phone] -- FAX [phone]

Table of Contents

1.0 WARRANTY INFORMATION ................................ 1

1.1 RADIO AND TV INTERFERENCE.........................................1

1.2 SERVICE................................................................................2

2.0 GENERAL INFORMATION .................................. 3

2.1 FEATURES ...........................................................................3

2.2 DESCRIPTION......................................................................3

3.0 CONFIGURATION OVERVIEW............................. 4

3.1 CONFIGURATION SWITCHES.............................................4

3.2 CONFIGURATION SWITCH SET "S1" .................................5

S1-1 through S1-4: Data Rate Setting......................................6

S1-5 and S1-6: Clock Source ...................................................6

S1-7: Asynchronous/Synchronous Mode .................................6

S1-8: Carrier Control Method ...................................................7

3.3 CONFIGURATION SWITCH SET "S2" .................................7

S2-1 and S2-2: Word Length....................................................7

S2-3: Extended Signaling Rate ................................................8

S2-4 and S2-5: RTS/CTS Delay...............................................8

S2-8: V.54 Loopback Test Enable............................................8

4.0 INSTALLATION..................................................... 9

4.1 FIBER CONNECTIONS .........................................................9

4.2 RS-232 CONNECTION..........................................................9

5.0 OPERATION........................................................ 10

5.2 TEST MODES......................................................................10

5.2.1 LOCAL ANALOG LOOP BACK (LAL) ...........................10

5.2.2 REMOTE DIGITAL LOOPBACK (RDL).........................11

5.2.3 USING THE V.52 BER TEST INDEPENDENTLY.........12

5.3 POWER UP .........................................................................12

APPENDIX A: SPECIFICATIONS ............................ 13

APPENDIX B. PIN CONFIGURATIONS................... 14

Documentation Number 11401198 Manual Table of Contents

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH [phone] -- FAX [phone]

1.0 WARRANTY INFORMATION

B&B Electronics warrants all Model 1140 components to be free
from defects, and will, at our option, repair or replace the product
should it fail within one year from the first date of shipment.
This warranty is limited to defects in workmanship or materials, and
does not cover customer damage, abuse or unauthorized
modification. If this product fails or does not perform as warranted,
your sole recourse shall be repair or replacement as described
above. Under no condition shall B&B Electronics be liable for any
damages incurred by the use of this product. These damages
include, but are not limited to, the following: lost profits, lost savings
and incidental or consequential damages arising from the use of or
inability to use this product. B&B Electronics specifically disclaims all
other warranties, expressed or implied, and the installation or use of
this product shall be deemed an acceptance of these terms by the
user.

1.1 RADIO AND TV INTERFERENCE

The Model 1140 generates and uses radio frequency energy,
and if not installed and used properly—that is, in strict accordance
with the manufacturer's instructions—may cause interference to
radio and television reception. The Model 1140 has been tested and
found to comply with the limits for a Class A computing device in
accordance with the specifications in Subpart J of Part 15 of FCC
rules, which are designed to provide reasonable protection from
such interference in a commercial installation. However, there is no
guarantee that interference will not occur in a particular installation.
If the Model 1140 does cause interference to radio or television
reception, which can be determined by disconnecting the RS-232
interface, the user is encouraged to try to correct the interference by
one or more of the following measures: moving the computing
equipment away from the receiver, re-orienting the receiving
antenna and/or plugging the receiving equipment into a different AC
outlet (such that the computing equipment and receiver are on
different branches).

Documentation Number 11401198 Manual 1

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815 433-5100 -- FAX [phone]

1.2 SERVICE

All warranty and non-warranty repairs must be returned freight
prepaid and insured to B&B Electronics. All returns must have a
Return Materials Authorization number on the outside of the
shipping container. This number may be obtained from B&B
Electronics Customer Service at [phone]. Packages received
without an RMA number will not be accepted.

B&B Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 1140. Technical Service hours: 8AM to 5PM CST, Monday
through Friday.

2 Documentation Number 11401198 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH [phone] -- FAX [phone]

2.0 GENERAL INFORMATION

Thank you for your purchase from B&B Electronics. This product
has been thoroughly inspected and tested and is warranted for One
Year parts and labor. If any questions or problems arise during
installation or use of this product, please do not hesitate to contact
B&B Electronics Technical Support at [phone].

2.1 FEATURES

• Supports async. or sync. communication over dual optical fibers

• V.52 and V.54 diagnostics

• Data rates to 38.4 Kbps

• Range to 2 miles

• Immune to RFI/EMI noise, ground loops and transient surges

• Easily accessible Diagnostic & Configuration Switches

• Jumper-selectable carrier control

• Requires no AC power or batteries

• Two easy-to-read status indicators

• Male or female DB-25 and SMA or ST connectors available

2.2 DESCRIPTION

The B&B Model 1140 miniature dual fiber optic modem brings
fiber to the desktop. Combining the inviolability of fiber with the
troubleshooting capabilities of V.52 and V.54 diagnostics, the Model
1140 is the best choice for your most critical RS-232 links. The
Model 1140 operates async. or sync., supports data rates to 38.4
Kbps and plugs directly into a workstation's RS-232 port. Like all
fiber optic modems, the Model 1140 is inherently immune to
RFI/EMI noise, ground loops and transient surges. The carrier may
be switch selected as either "Continuously On" or "Controlled by
RTS". The RS-232 connector is configured as DCE.

Two easy-to-read LED indicators monitor the Error and Test
modes. Drawing all necessary power from the RS-232 interface, the
Model 1140 requires no AC power or batteries to operate.
Measuring only 3.42" x 2.10" x .73", the Model 1140 is able to fit into
tight installation spaces. On the RS-232 side, the Model 1140 comes
equipped with either a male or female DB-25 connector; on the fiber
side it is available with a choice of SMA or ST connectors.

Documentation Number 11401198 Manual 3

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815 433-5100 -- FAX [phone]