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Fiber Optic Data Communications
Modems
MODEL LT1705 |
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MODEL LT1705
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Multi-Interface Sync/Async Fiber Optic Modem
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- Data
Rates up to 256Kbps
- Distances
Up to 80km*
- All
Popular Electrical Interfaces
- Built-In
Test Signal Generator
- Local
& Remote Loopback
- Interchangeable
Interface
- Supports
5 RS-232 Control Signals
- Multimode
& Single Mode Mode (850/1300/1550nm)
- Built-In
Power Redundancy
- Local
Dry Contact Alarm Relay
- Standalone/Wallmount
or Rackmount
- High
Temperature (-20°C
to 70°C) Version
Optional
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Applications
The LT1705 Multi-Interface Fiber Optic Modem is intended for applications requiring high data rates and handshaking.
Description
The
LT1705 is the ultimate “Configure-it-as-you-need-it”
fiber optic modem. Ideal
for applications requiring multiple interfaces,
high data rates or full handshaking, it supports
asynchronous
and synchronous
data rates up to 256Kbps. It
supports most popular electrical interfaces including
RS-232, RS-422/RS-530,
RS-485, V.35 and TTL. Electrical
interfaces are modular and can be easily changed
before or after installation.
Distances
up to 30km* are possible depending on various
factors including electrical interface, optical
transmitter, number of fiber optic connectors
and fiber type and quality. Power
redundancy is standard and optical redundancy
is optional.
Available
for multimode (850/1300nm) or single mode (1300/1550nm),
the LT1705 is compatible with all popular sizes
and types of fiber optic cable.
Fiber optic connectors are ST or FC.
Electrical connector is DB25 female.
Power is 12VDC (standard), 24VDC, -48VDC,
or 115/230VAC with an external power cube.
The
LT1705 is available in two versions: PC Card for
installation in a 19' rack assembly, wall mount, or standalone "Pizza"
box. Standalone or rack
mount versions can be mixed or matched on either
end. An temperature hardened
version (-20° to 70°C), Model LT1705T, is also
available.
*Contact
factory for higher requirements (Laser version).
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Specifications
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Data Rates
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RS-232 (Async with RTS, CTS, DCD)....up
to 128 Kbps
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RS-232 (Sync)....up to 128 Kbps
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RS-422/530, RS-485, TTL (Async)....up
to 256 Kbps
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RS-422/530, V.35 (Sync)....up to
256 Kbps
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Optical
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Transmitter....ELED, ELED, LASER*
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ReceiverPIN Diode
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Wavelength....850nm, 1300nm Multimode
1300nm, 1550nm Single Mode
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Fiber Optic Connectors ST, FC or
SC
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Loss Budget* (850nm, 1300nm, 1550nm)....Multimode
(62.5/125µm): 15dB Single Mode (9/125µm):
20dB
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Electrical
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Connector....DB25 Female
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Interface....RS-232, RS-422/RS-530,
V.35, or TTL
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System
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Bit Error Rate....1 in 109
or better
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Alarm
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Dry Contact....Normal Open
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Visual Indicators
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System Status....Status, PWR A, PWR
B, Vcc, ALARM, ST, SLAVE
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Electrical Signal Status....RD, RT,
CTS, SD, TT, RTS
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Optical Signal Status....TX, RX
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Diagnostic Function....Local Loopback
Test
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Power
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Standard....12VDC @ 500mA
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Optional....24VDC, -48VDC, or 115/230VAC
(with external power cube)
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Temperature
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Operating....-10° to 50°C
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Hi-Temp (optional)....-20° to 70°C
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Storage....-40° to 90°C
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Humidity....95% non-condensing
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Physical (Standalone/Wallmount
Unit)
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Height..(3.53 cm) 1.4"..
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Width....(18.14 cm) 7.1"
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Depth....(16.57 cm) 6.5"
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Weight....(192 gm) 5.44 oz
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