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  11 of 51 
© 2006; Rotronic AG  IN-E-HyLab-V4_11 
Use of the MTA service connector is limited to configuring the instrument (unit system, output 
range, display, etc.). Both the HygroLab 2 and HygroLab 3 can also be configured via one of the 
external digital ports. 
Instrument configuration requires a PC with the HW4 software installed. Instructions for configuring 
the HygroLab are provided in the software manual. 
4.2  Baud rate compatibility requirements 
Depending on the model, devices from ROTRONIC use one of the following Baud rates as the 
factory default: 
•  57600 bps: HygroLog NT data logger and docking stations 
•  19200 bps: HygroPalm and HygroLab indicators, HygroFlex and M33 transmitters, HygroClip 
Alarm programmable alarm card, HygroClip DI interface, HygroStat MB Thermo-Hygrostat 
The factory default Baud rate of the HygroLab is compatible both with both the ROTRONIC HW4 
and HW3 software and is the recommended Baud rate for the HygroLab. 
IMPORTANT: 
•  All devices connected to a RS-485 multi-drop network (master and slaves) must use the 
same Baud rate 
•  Models with the optional Ethernet (TCP/IP) interface: after using HW4 – Device Manager to 
change the Baud rate, you should also change the configuration of the internal Ethernet 
module to the new Baud rate (see separate HW4 manual). 
Devices and internal Ethernet modules with mismatched Baud rate will not communicate together. 
•  The Baud rate configuration of a ROTRONIC device can be changed with the Device 
Manager function (Digital Interface tab) available from within the HW4 software. 
•  The Baud rate of a Digi Module can be changed only from the module web interface. See 
separate document IN-E-TCPIP-Conf_11 (available in PDF format). 
4.3  Ethernet local area network 
ROTRONIC devices with an Ethernet (TCP/IP) interface presently use an internal module 
manufactured by Digi International (Digi Connect ME for a wired connection, Digi Connect WI-ME 
for a wireless connection). Both types of module feature a web interface that is used to configure 
the module. 
IMPORTANT: The TCP/IP settings of models with an Ethernet (TCP/IP) interface should be 
configured to be compatible with the local area network. Detailed instructions are provided 
separately in document IN-E-TCPIP-Conf_11 (available in PDF format). 
Models with an Ethernet (TCP/IP) interface are shipped with a Device Configuration Certificate that 
provides information about the factory configuration settings of both the Ethernet module and 
device. See example below: 










