MIC-24

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.

MIC-24CL is available in two models, for active and passive current loop transmissions:

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. MIC-24/CL's power is derived from the RS-232 / V.24 data and control source signals.

Both MIC-24/CL feature a DCE/DTE switch to simplify installation and eliminate the need for cross cables.