AEROCET 531S Manual Rev H
Page 23
7.1.
Serial Interface
The serial interface to the AEROCET 531S is a standard 9 pin (DB-9) connector. It is
located on the right hand side of the instrument as shown below.
Communication with the AEROCET 531S
requires a custom serial cable (PN 3228).
Standard serial cables will not work and may cause damage to the instrument if
connected
.
Serial Cable PN 3228 is only for RS-232 communication.
Below is a description of the DB-9 connector:
Pin
Function
Communication Type
1
Not Used
2
TX
RS-232
3
RX
RS-232
4
Not Used
5
Ground
RS-232 & RS-485
6
Not Used
7
Not Used
8
A+
RS-485
9
B-
RS-485
1 2 3 4 5
6 7 8 9
Mini USB
