GT-521S Manual Rev D
Page 23
7.1.
Serial Interface
The serial interface to the GT-521S 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 GT-521S through the RS-232 DB-9 port requires a custom
serial cable (PN3228).
Standard serial cables will not work and may cause damage to
the instrument if connected
.
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
Analog Out 1
DAC
7
Analog Out 2
DAC
8
A+
RS-485
9
B-
RS-485
1 2 3 4 5
6 7 8 9
Mini USB