Instruction Manual

IN-E-HyLab-V4_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroLab bench top indicator version 4:
instruction manual
Document title
Page 27 of 51
© 2006; Rotronic AG IN-E-HyLab-V4_11
8 Connectors
Internal service connector (HygroLab 1)
Open the instrument housing to access the service connector. This 3-pin connector is located on
the printed circuit board as shown below:
Service connector
use cable # AC1623 to connect
to the COM port of a PC
Probe input connectors
RS232 / RS485 (HygroLab 2 and 3)
RS232 connector (9-pin Sub D)
Pin # Function
2 TX
3 RX
5 GND
RS485 connector (9-pin Sub D)
Pin # Function
1 RI +
5 GND (normally not used)
9 RI -