B&B Electronics 1140 Bedienungsanleitung
Documentation Number 11401198 Manual Cover Page
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
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 (815) 433-5100 -- FAX (815) 433-5105
Internet:
http://www.bb-elec.com
orders@bb-elec.com
B&B Electronics -- March 1998
Not Recommended for New Installations.
Please contact Technical Support for more information.
Documentation Number 11401198 Manual Table of Contents
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
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 1
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815 433-5100 -- FAX (815) 433-5105
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).
2 Documentation Number 11401198 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
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 (815) 433-5100. 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.
Documentation Number 11401198 Manual 3
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815 433-5100 -- FAX (815) 433-5105
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 (815) 433-5100.
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.
4 Documentation Number 11401198 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
3.0 CONFIGURATION OVERVIEW
The Model 1140 is fairly simple to install and is ruggedly
designed for excellent reliability: just set it and forget it. The
following instructions will help you set up and install the Model 1140
properly. If you have any questions, don't hesitate to call B&B’s
Technical Support Department at (815) 433-5100 (8-5 PM, CST).
3.1 CONFIGURATION SWITCHES
The Model 1140 uses a unique set of 16 external mini DIP
switches that allow configuration to an extremely wide range of
applications. These 16 DIP switches are grouped in two eight-switch
sets, and are externally accessible from the underside of the Model
1140 (see Figure 1). Since all configuration DIP switches are
externally accessible, there is no need to open the Model 1140's
case for configuration.
The configuration switches allow you to select data rates,
clocking methods, V.52 & V54 tests, word lengths, extended
signaling rates, async. or sync. mode. The drawings, text and tables
on the following pages describe all switch locations, positions and
functions.
Figure 1. Model 1140 Configuration Switches External Position
Documentation Number 11401198 Manual 5
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
The Model 1140 has two sets of eight switches, yielding 16 total
DIP switches. The three sets will be referred to as S1 and S2. As
Figure 2 shows, the orientation of all DIP switches is the same with
respect to "ON" and "OFF" positions.
Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions
3.2 CONFIGURATION SWITCH SET "S1"
The DIP switches on S1 set data rate, clock source,
async./sync. mode and carrier control method. The default settings
are summarized in the table below.
Figure 3. Summary of DIP switch default settings for set S1
6Documentation Number 11401198 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
S1-1 through S1-4: Data Rate Setting
Switches S1-1 through S1-4 are set in combination to determine
the asynchronous and synchronous data rate for the Model 1140.
S1-1 S 1-2 S1-3 S1-4 Setting
On On On On 1.2 Kbps
Off On On On 1.8 Kbps
On Off On On 2.4 Kbps
Off Off On On 3.6 Kbps
On On Off On 4.8 Kbps
Off On Off On 7.2 Kbps
On Off Off On 9.6 Kbps
Off Off Off On 14.4 Kbps
On On On Off 19.2 Kbps
Off On On Off 28.8 Kbps
On On Off Off 38.4 Kbps
Off On Off Off 57.6 Kbps
S1-5 and S1-6: Clock Source
Switches S1-5 and S1-6 are set in combination to determine the
transmit clock source for the Model 1140.
SI-5 S1-6 Setting
On On Internal transmit clock
Off On Receive recover clock
On Off External transmit clock
S1-7: Asynchronous/Synchronous Mode
The setting for switch S1-7 determines whether the Model 1140
is in asynchronous or synchronous operating mode.
S1-7 Setting
On Asynchronous
Off Synchronous
Documentation Number 11401198 Manual 7
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
S1-8: Carrier Control Method
The setting for switch S1-8 determines whether the carrier is
"constantly on" or "controlled by RTS". This setting allows for
operation in switched carrier, rnultipoint and/or hardware
handshaking applications.
S1-8 Setting
Off Constantly On
On Switched Carrier
3.3 CONFIGURATION SWITCH SET "S2"
The DIP switches on S2 set word length, extended signaling
rate, RTS/CTS delay and V.52 and V.54 diagnostic test.
Figure 4. Summary of DIP switch default settings for S2
S2-1 and S2-2: Word Length
Switches S2-1 and S2-2 are set in combination to determine the
word length for asynchronous data.
S2- 1 S2-2 Setting
Off On 8 bits
On On 9 bits
Off Off 10 bits
On Off 11 bits
8Documentation Number 11401198 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
S2-3: Extended Signaling Rate
The setting for switch S2-3 determines the range of variability
the Model 1140 "looks for" in asynchronous data rates (i.e., the
actual variance from a given frequency level the Model 1140 will
tolerate).
S2-3 Setting
Off -2.5% to +1% Basic
On -2.5% to +2.3% Extended
S2-4 and S2-5: RTS/CTS Delay
The combined settings for switches S2-4 and S2-5 determine
the amount of delay between the time the Model 1140 "sees" RTS
and when it sends CTS. Options are no delay, 7 ms and 53 ms.
S2-4 S2-5 Setting
On On 7 mS
Off On 53 mS
On Off No delay
Off Off No delay
S2-8: V.54 Loopback Test Enable
To reset the V.54 circuit, set switch S2-6 to the "ON" position,
then back to the "OFF" position.
S2-8 Setting
Off V.54 Enable
On V.54 Disable
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