| The asynchronous LT-1V and LR-1V line splitters
effect one data regeneration within a 10 mA tristate
The asynchronous LT-1V and LR-1V line splitters
effect one data regeneration within a 10 mA tristate
current loop/M-1 modem connection and allow
simultaneous, insulation data extraction to a V.24/
RS232-C or 10 mA current loop (M-1 modem) interface.
Because of the freely configurable interfaces,
the line splitter can be used not only as a line splitter
in modem connections but also as a V.24 interface
multiplier in an M-1 modem connection.
The receiving optocoupler at the M-1 modem interface
galvanically insulates the modem sections. If a
device fails, the line splitter is bridged under relay
control so that the modem connection is restored
without data regeneration. This bypass function
provides high data network security, and the
operating voltage of 230V AC and 24V DC guarantees
universal applicability.
Because of this flexibility a safe bus- or starshaped
network structure with multidrop capability
can be developed, thereby enabling a centre with
several addressed offices to communicate reliably
without problem even over longer distances. The
range of the modem transmission is up to 21 km.
LT-1V is the table-mounted model with its own
power supply, and LR-1V is the corresponding line
splitter in the form of a plug-in card for the RV-1 19î
subrack. LT-1V and LR-1V provide speeds of up to
100,000 bits/s, have full, half duplex and simplex
capacity and are compatible with M-1 and R-1.
The signal status is displayed by means of LEDís
(Power, RD, TD and DCD) on the front panel.
The LT-1V/ LR-1V line splitters are code-transparent,
and a transient protection provides good protection
against lightning and overvoltages.
The LT-1V and LR-1V line splitters meet the most
stringent requirements regarding reliability, performance
and operation, and because of simple
handling the devices can be installed without
problem.
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| Divides a connection into 2 interfaces |
| All interfaces freely configurable, V.24 or modem |
| Suitable for private cable networks in bus or star structure |
| Asynchronous 4-wire data transfer |
| 0-100,000 bits/s |
| Full duplex and code-transparent |
| Galvanic insulation by optocouplers |
| Bypass function |
| LED displays |
| 230V AC and 24V DC operating voltage |
| Small, compact and simple to install |
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| Technical data |
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| Data transfer:
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Asynchronous; full-, half duplex or simplex
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| code-transparent
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| Interface 1, adjustable:
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10mA tristate current loop (4-wire)
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| RS232-C; V.24/V.28;
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| 5-pin plug
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| Interface 2, adjustable:
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110mA tristate current loop (4-wire)
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| RS232-C; V.24/V.28
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| 5-pin plug
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| Interface 3, adjustable:
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110mA tristate current loop (4-wire)
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| RS232-C; V.24/V.28
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| 5-pin plug
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| Transfer speed:
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0-100.000 bit/s,
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| LED displays:
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Network, TD, RD and DCD (interface 1)
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| Insulation:
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Galvanic insulation of the data transfer by optocouplers (modem only)
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| network insulation by transformer (230V AC only)
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| Insulation voltage::
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420 Vrms
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| Supply voltage:
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LT-1V: 230V AC + 15% 50/60 Hz or 24V DC + 10%
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| LR-1V: 15-26V DC
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| Other voltages on request
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| Current consumption:
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LT-1V: 25mA maximum at 230V AC
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| 150mA maximum at 24V DC
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| LR-1V: 160mA maximum at 15V DC
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| Power cable:
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Detachable 1.8 m (LT-1V)
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| Temperature range:
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5-50°C ambient temperature
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| Humidity range:
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0-95% relative humidity
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| Dimensions in mm:
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LT-1V: 129 x 47 x 134 (WxHxD)
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| LR-1V: 100 x 160 (European format)
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| Casing material:
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Plastic ABS, black
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| aluminium back
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| Weight:
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LT-1V: 0.4 kg;
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| LR-1V: 0.1 kg
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| Assembly:
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LT-1V: Rubber pads or Velcro tape
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| LR-1V: a card slot in the 19î subrack
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| Conformity:
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CE
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| RS232/V.24 connection (5-pin screw terminal)
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| Modem connection (5-pin screw terminal)
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| Range of the M-1 modem interface
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| Other model versions
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| LH-1V:
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LT-1V for 35 mm DIN mounting rail
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| LT-4V:
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As LT-1V, one interface only as V.24/RS485
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| LH-4V:
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LT-4V for 35 mm DIN mounting rail
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| Settings
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| Mode of operation of the interfaces (modem or V.24)
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| Direction of data flow
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