TECHNICAL INFORMATION
Sysmex KX-21 Operator’s Manual -- Revised October 1998 B-1
1. OUTPUT FORMAT FOR HOST COMPUTER (OPTION)
The bit serial voltage type, which conforms to the RS-232C interface, is used for host
computer output of the KX-21. The serial interface port for the connection with the host
computer is on the rear panel of the main unit, when an option is incorporated.
NOTE: • When the optional serial interface function is intended to incorporate to
this instrument, following optional part should be ordered in prior to the
installation so that Sysmex service representative could install at once.
973-4531-1 OUTPUT UNIT NO. 1 KX-21
1.1 Hardware
1. Connector
• The connector for the output to the host computer is located on the rear panel.
• Use a 9-pin D-SUB, female connector.
• Fixing screws for this connector are in inch-specification.
2. Connector Signals
Pin No. Signal Name Signal Direction
1
2 Receive data (R×D) From Host to KX-21
3 Transmit Data (T×D) To Host from KX-21
4 Data Terminal Ready (DTR) To Host from KX-21
5 Signal Ground (SG)
6 Data Set Ready (DSR) From Host to KX-21
7 Request to Send (RTS) To Host from KX-21
8 Clear to Send (CTS) From Host to KX-21
9
Table B-1-1: Pin Assignment
3. Communication Format
The data is communicated in the asynchronous, half duplex mode.
4. Signal Level
Signal level conforms to JIS C6361.
Level Data signal Control signal
+3V or higher Logic "0", Start bit ON
-3V or lower Logic "1", Stop bit OFF
Table B-1-2: Signal Level
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