Connecting Procedure; Connector Pin Arrangement Of Nt20S - Hitachi 902 Service Manual

• • Connecting Procedure
Described below is the method of connecting NT20S and host with RS-232C.
< Connector Pin Arrangement of NT20S >
The connector has the following specifications.
Electrical characteristics : Conform with EIA RS-232C.
•
Connection signals
•
1
5
Connector
Pin No.
1 Protective ground or ground
2 Transmitted data
3 Received data
4 Request to send
5 Clear to send
9 Signal ground
NOTES: 1. FG is not connected inside NT.
2. The pin without entry is not used.
: Signal direction is as seen from the host side.
6
9
Signal Name Symbol
FG (Note 1)
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
SG (GND)
15 - 18
Signal Direction
Input Output
— —
O
O
O
O
— —