3-113
3.12.8 RS-232C Test
This mode performs a return back test of the optional RS-232C port.
Important:
Before doing the RS-232C test, connect the 2-pin and 3-pin of the RS-232C interface (see step 1,
below). If not, the RS-232C test does not operate correctly.
1. Connect a special return back test connector with RS-232C interface connector.
2. Press
MENU, *, 1, 1
. Select
“RS232C”
, then press
ENTER
.
3. Press
ENTER
.
The results are shown in the display.
If the test is successful, the display will show “OK”.
If the test is failed, the display will show “NG”.
4. Press
STOP
to exit the RS-232C test mode and return to standby mode.
