FEATURES
- The FOM-6MP Asynchronous Fiber Optic Multi-point
modem is used for multidrop data distribution connecting full or half
duplex async computers and DTEs. The modem ensures the integrity of data
transmissions over fiber optic cables at distances up to 16 km (10 miles)
between modems. Only one fiber link is required between the DTEs for
transferring full duplex data.
- Two versions of FOM-6MP are available: a single
fiber link version and a dual fiber link version. The single fiber link
version is used as the modem attached to the Host (Master) in the
application and the dual fiber link version is used for all other points
in the application.
- FOM-6MP incorporates all the advantages of a fiber
optic system, providing:
- Lower attenuation than with copper wire;
- Capability of working in harsh environments;
- EMI/RFI immunity;
- Near absolute security and reduction in the cost
of data encryption;
- Safety and electrical isolation.
- FOM-6MP contains two bi-directional optical
interfaces and a single RS-232/V.24 interface. Data received on optical
Link A is sent to the DTE and repeated to optical port Link B for
transmission to the upstream FOM-6MP. When data is received on Link B, it
is repeated and transmitted to Link A to respond to the Master computer's
request.
- FOM-6MP should be used only in a multidrop
application, where data from host (Master) is transmitted to all DTEs
(Slaves), but only one Slave responds. The responding DTE contends for
transmission by either raising RTS or by data transitions (selectable).
- Diagnostics include power status as well as status
of transmit and receive transmission from Link A and B and the terminal.
If FOM-6MP does not receive transmission from the Link, the FLT LED A
lights. If transmission is not received by the remote unit, FOM-6MP sends
back a signal which causes the local FOM-6MP FLT LED B to flash.
- To prevent blockage in event of streaming, a port
can be disabled by automatic circuitry, if it remains active more than 1
or 13 sec. (time interval is strap selectable). The automatic disable
resets whenever DTE RTS drops or whenever data transitions are not
present.
- FOM-6MP is provided in a plastic enclosure and is
powered by an external stand-alone power supply via a power jack or via
the RS-232 25-pin connector.
SPECIFICATIONS
- Multipoint transmission over fiber optic
- Asynchronous transmission up to 38.4 kbps
- Range up to 16 km (10 miles) over Singlemode
fiber
- Automatic disabling in the event of streaming
- Variety of optical options including:
Multimode, Singlemode and laser diode over Singlemode
- Extensive diagnostics
- Compact, lightweight, easy to install
- Wide input DC supply, 10V to 30V
FOM-6MP/*/+
Asynchronous Fiber Optic Multi-point Modem
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Specify Single Link or Dual Link:
SL for Single Link
DL for Dual Link |
| + |
Specify Optical Interface:
ST85 for 850 nm Multimode with ST connector
FC85 for 850 nm Multimode with FC-PC connector
ST13 for 1300 nm Singlemode with ST connector
FC13 for 1300 nm Singlemode with FC-PC connector
ST13L for 1300 nm laser diode Single mode with ST connector
FC13L for 1300 nm laser diode Singlemode with FC-PC connector |
ACCESSORIES
PS-230/12/500
Wall-mounted, 230 VAC/500 mA power supply
PS-115/12/500
Wall-mounted, 115 VAC/500 mA power supply |
ORDERING
FOM-6MP/DL/ST13
FOM-6MP/DL/ST85
FOM-6MP/SL/ST13
FOM-6MP/SL/ST85
APPLICATION
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