Casio QT-2000 Service Manual page 61

(17) Low inline data reception test
Connect two QT-2000s with a standard inline cable (RS-485).
Perform the reception unit operation first then the transmission unit.
Operation: [n][m][2][1][SUB TOTAL]
n = Number of execution and should be within the range of 0 to 9.
If no number or "0" is input, the test continues endlessly.
m = baud rate (m > n) ; 0 : 1200 bps, 1: 2400 bps, 2: 4800 bps, 4: 9600 bps, 5: 19200 bps
To stop the test, press [ESC].
Display: <LCD>
L INLINE RX
OK: XX NG: XX
END
R/J print:
L INLINE TX
END
(18) Asynchronous online test (loop back test)
Prepare the loop back connector.
Loop back connector wiring.
Pin No. 2: RD
3: SD
7: RTS
8: CTS
1: CD
4: DTR
6: DSR
9: CI
21
count up
21
Indicates "ESC" when
the test is finished
0
forcibly by [ESC].
21
21
prints "ESC" when the
test is finished forcibly
by [ESC] button.
— 59 —
<Dot/7-segment>
Dot/7-segment display indicates 0 only when
the test is continued from the "Dot/7-segment
display test." When the test is performed
indipendently, the dot/7-segment display indi-
cates nothing.
0