Connector And Signal Names; Signal Direction - YOKOGAWA MT210 User Manual

Connector and Signal Names

Signal Direction

IM 767361-01E
1 2 3 4
RS-232 connector: DBSP-JB25S equivalent
The figure above shows the pin numbers on the RS-232 connector.
1 AA (GND: Protective Ground) : Grounded to the case of this instrument.
2 BA (TXD: Transmitted Data) : Data transmitted to a personal computer.
3 BB (RXD: Received Data)
4 CA (RTS: Request to Send)
5 CB (CTS: Clear to Send)
7 AB (GND: Signal Ground)
Note
Pins 6, and 8 through 25 are unused.
The figure below shows the direction of the signals used by the RS-232C
interface.
4
CA(RTS)
[transmission Request...Receive OK]
MT200 Series
5
CB(CTS)
RS-232 Interface
[transmission approved...preparation OK]
2
BA(TXD) [transmission data]
3
BB(RXD) [receive data]
Overview of the RS-232 Interface
Pins 14–25 unused
5 Pin 6 7 Pins 8–13 unused
unused
Signal direction ........ Output
: Data received from personal computer.
Signal direction ........ Input
: Signal used for handshaking when receiving
data from a personal computer.
Signal direction ........ Output
: Signal used for handshaking when
transmitting data to a personal computer.
Signal direction ........ Input
: Ground for signals
PC
55