21
RS-232
↔
CURRENT LOOP INTERFACE CONVERTER
(6) On the CL050, connect a wire from
T+ to R+.
(7) Plug the CL050 into an AC outlet.
(8) Set the DTE device to full-duplex.
(9) Enter data.
(10) The TX and RX LEDs should
flash and the data should display on
the DTE’s monitor. If this occurs, all
internal circuitry is operational.
6.2 Self Test
Follow these instructions to test the
internal circuitry of the CL050:
(1) Unplug the CL050 from AC outlet.
(2) Set switch SWA to full-duplex,
transmit active, receive passive.
(3) Set switch SWC to DCE
configuration.
(4) Attach a DTE device using a
straight-pinned cable from the DTE to
the CL050.
(5) On the CL050, connect a wire from
T- to R-.
+
-
+
-
T
R
DTE
DCE
Configuration
CL050
RS-232C Cable
Figure 6-1. Wiring for the Internal Circuitry Test.
