ORDERING
MIC-24/CL/A/*
Active Unit, Interface converter for current loop
* Specify
60
for optional 60 mA, factory set
(Default is 20 mA)
MIC-24/CL/P/+
Passive Unit, Interface converter for current
loop
+ Specify
F
for female 25-pin connector
Specify
M
for male 25-pin connector
P/S-AC/12/800
90 to 264 VAC external power supply for
MIC-24/CL/A
MIC-24/CL
Current Loop Interface
Converter
Specifications are subject to change without prior notice.
253-100-04/00
2000 RAD Data Communications Ltd.
Order from: Cutter Networks
Ph:727-398-5252/Fax:727-397-9610
www.bestdatasource.com
FEATURES
APPLICATIONS
DESCRIPTION
•
MIC-24/CL enables communication
between equipment with current loop
interface and devices with RS-232 / V.24
interface. MIC-24/CL operates
bidirectionally, full or half-duplex,
converting the RS-232 / V.24 voltage levels
to loop closure or loop opening.
active and passive current loop
transmissions:
•
•
•
•
•
•
•
•
•
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Conversion of RS-232/V.24 to current
loop, bidirectional
Distances up to 6.5 km / 4 miles
Data rates up to 19.2 bps
Full or half duplex
20 mA current loop, 60 mA optional
Active or passive units
LEDs indicating RD, TD activity
(active only)
DCE/DTE switch
Miniature, lightweight
Easy to install
•
MIC-24CL is available in two models, for
MIC -24/CL/A
(active) allows both the
transmitter and the receiver to supply the
current loop source or only the transmitter
to supply the source (strap-selectable, see
Figures 1,2.
The active unit operates with
20 mA (60 mA optional ordering) and
requires a standard external power supply
of 12V. LED indicators, POWER, TD and
RD, monitor the data flow for transmit and
receive signals.
MIC -24/CL/P
(passive) always accepts the
supplied loop current from both transmit
and receive lines (see
Figure 3).
The passive
unit operates with 20 or 60 mA, without
requiring an external power source. Its
power is derived from the RS-232 / V.24
data and control source signals.
•
Both models feature a DCE/DTE switch to
simplify installation and eliminate the need
for cross cables.
Order from: Cutter Networks
Ph:727-398-5252/Fax:727-397-9610
www.bestdatasource.com
SPECIFICATIONS
•
Data Transmission
•
Range
Asynchronous, full or half duplex
Up to 6.5 km / 4 miles
RS-232/V.24
Active Unit: Current loop 20 mA
60 mA optional
Passive Unit: Current loop 20 or 60 mA
Up to 19.2 kbps
One miniature D-25 pin male connector
(the passive model also includes an optional
female connector,
see Ordering).
4-screw terminal block
DC power connector (active unit only)
Active unit: POWER, TD (transmit)
RD (receive)
Passive unit:
no AC power supply required,
uses ultra-low power derived from the
RS-232/V.24 data and control signals
Active unit:
requires standard external
power supply of 12
±
2V at 150 mA.
Alternatively, power can be supplied to
pin 9 of the DB-25 connector, without
external power supply.
•
Physical
Length: 110 mm / 4.3 in
Width: 55 mm / 2.1 in
Height: 22 mm / 0.9 in
Weight: 75 g / 2.6 oz
Temperature: 0-50oC / 32-122oF
Humidity:
Up to 90%,
non-condensing
Declaration of Conformity
Mfr. Name:
Mfr. Address:
RAD Data Communications Ltd.
12 Hanechoshet St.
Tel Aviv 69710
Israel
•
Environment
•
Interface
declares that the products:
Product Name: MIC-24/CL/A, MIC-24/CL/P
Conform to the following standard(s) or other
normative document(s):
EMC:
EN 55022 (1994): Limits and
methods of measurement of radio
disturbance characteristics of
information technology equipment.
EN 50082-1 (1992): Electromagnetic
compatibility - Generic immunity
standards for residential, commercial
and light industry.
Supplementary Information:
The product herewith complies with the requirements
of the EMC Directive 89/336/EEC and the Low
Voltage Directive 73/23/EEC. The product was tested
in a typical configuration.
Tel Aviv, January 30th 1996
•
Data Rates
•
Connectors
•
LEDs
•
Power
Haim Karshen
VP Quality
European Contact: RAD Data Communications
GmbH, Lyoner Strasse 14, 60528 Frankfurt am Main,
Germany
Order from: Cutter Networks
Ph:727-398-5252/Fax:727-397-9610
www.bestdatasource.com
INSTALLATION
Caution.
This is a delicate instrument. Be careful when
setting jumpers or performing any actions within the
product so that you do not break or shake any
components.
6.
Plug the unit directly into the 25-pin
connector of the RS-232/V.24 equipment
and fasten with the screws.
Note:
For the MIC-24/CL/A unit, plug in the power
connector and check that the POWER LED is on.
MIC-24/CL is easy to configure and install.
Review Table 1 and Figure 4 for the factory
settings as the unit may already be strapped to
suit your application. If not, follow these steps:
1.
Open the unit by pressing the marked
places on the sides, starting at the cable
end.
Table 1. Strap Selection
Strap
DCE/DTE
Function
Factory
Setting
3.
Figure 4. Strapping Diagram
In the MIC-24/CL/A (active unit), set the
double RECEIVER strap to the position for
the Receive circuitry to be active or
passive. When RECEIVER is set to ACTIVE,
“Rxa” is the positive lead and “Rxb” is the
negative lead. When RECEIVER is set to
PASSIVE, the polarity is reversed: “RXa” is
the negative lead and “RXb” is the positive
lead.
Connect the 4-wire line to the screw
terminal block: transmit pair to “TX” and
receive pair to “RX”, maintaining polarity.
Note:
Remote “TX” should be connected
to local “RX” and vice versa.
5.
Close the unit by pressing the two halves of
the cover together.
Designates if unit is DCE
configured as a DCE
or DTE
Selects the Receive ACTIVE
circuitry to be either
active (supplying
current) or passive
(sinking current).
ACTIVE/
PASSIVE
(on the
active unit
only)
2.
Set the DCE/DTE switch to the required
position. When set to
DCE,
the unit is
configured as a DCE for connection to a
computer or terminal. When set to
DTE,
it
operates as a DTE.
4.
Order from: Cutter Networks
Ph:727-398-5252/Fax:727-397-9610
www.bestdatasource.com
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