MIC-24CL ETC2 [List of Unclassifed Manufacturers], MIC-24CL Datasheet - Page 4

• Manufacturer Part Number: MIC-24CL
• Description: Current Loop Interface Converter
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

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.
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.
2.
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Strap
DCE/DTE
ACTIVE/
PASSIVE
(on the
active unit
only)
Open the unit by pressing the marked
places on the sides, starting at the cable
end.
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.
INSTALLATION
Table 1. Strap Selection
Function
Designates if unit is
configured as a DCE
or DTE
Selects the Receive
circuitry to be either
active (supplying
current) or passive
(sinking current).
Factory
Setting
DCE
ACTIVE
3.
4.
5.
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.
Close the unit by pressing the two halves of
the cover together.
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Figure 4. Strapping Diagram
6.
Note: For the MIC-24/CL/A unit, plug in the power
connector and check that the POWER LED is on.
Plug the unit directly into the 25-pin
connector of the RS-232/V.24 equipment
and fasten with the screws.
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