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 (815) 433-5100 -- FAX (815) 433-5105 Internet: http://www.bb-elec.com orders@bb-elec.com support@bb.elec.
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...
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.
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.
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.
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.
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.
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 On Off On Off On Off On Off On Off On Off S 1-2 On On Off Off On On Off Off On On On On S1-3 On On On On Off Off Off Off On On Off Off S1-4 On On On On On On On On Off Off Off Off Setting 1.2 Kbps 1.8 Kbps 2.4 Kbps 3.6 Kbps 4.8 Kbps 7.2 Kbps 9.6 Kbps 14.4 Kbps 19.2 Kbps 28.8 Kbps 38.4 Kbps 57.
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 Off On Setting Constantly 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.
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 Off On Setting -2.5% to +1% Basic -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.
4.0 INSTALLATION The Model 1140 is easy to install. After configuring the DIP switches, simply connect the two fiber cables and then connect the RS-232 interface. Figure 5 shows the location of the fiber connections on the Model 1140's rear panel. Figure 5. Close-up of ST and SMA connections 4.1 FIBER CONNECTIONS The Model 1140 short range modems are designed to work in pairs. You will need one at each end of a dual fiber cable. This cable connects to each Model 1140 using either an ST or SMA connector.
5.0 OPERATION Once you have configured each Model 1140 properly and connected the fiber and RS-232 cables, you are ready to operate the units. This section describes the LED status monitors, the V.52 and V.54 diagnostics and the power up process. 5.2 TEST MODES The Model 1140 offers two V.54 test modes to evaluate the condition of the modems and the communication link. These tests can be activated physically from the front panel, or via the interface. NOTE: V.
A. Activate LAL. This may be done in one of two ways: First, by moving the front panel toggle switch DOWN to "LAL". Second, by raising pin 18 on the interface. (NOTE: Make sure DIP switch SW1-8 is OFF). Once LAL is activated, the Model 1140 transmit output is connected to its own receiver. The "test" LED should be lit. B. Verify that the data terminal equipment is operating properly and can be used for a test. If a fault is indicated, call a technician or replace the unit. C.
5.2.3 USING THE V.52 BER TEST INDEPENDENTLY The V.52 BER test can be used independently of the V.54 loopback tests. This requires two operators: one to initiate and monitor the test at the local Model 1140, and one at the remote Model 1140. To use the V.52 BER test by itself, both operators should simultaneously follow these steps: 1. Locate the "511/511 E" toggle switch on the front panel of the 1140 and move it DOWN. This activates the V.
APPENDIX A: SPECIFICATIONS Transmission Line: Dual optical cable Transmission Mode: Async. or sync., half or full duplex Interfaces: EIA RS-232, CCITT V.24 Data Rates: 0 - 38.4 Kbps Distance: 2 miles over continuous fiber RTS/CTS Delay: Switch-selectable: No delay, 9.0 mS, 79.
APPENDIX B: PIN CONFIGURATIONS 14 Documentation Number 11401198 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 433-5105
