Waters 2489, Operator'S Manual

Page: 43 / 234

Making electrical power connections 2-11
Example: An AUFS setting of 2.0000 provides a traditional 1-V/AU
output. An AUFS setting of 4.0000 provides a 0.5-V/AU output,
which supports chromatography above 2 AU.
• Switched outputs – There are two switch contact closures you can
program to turn on, off, toggle, pulse once for a defined duration, or
pulse repetitively for a specified period of time.
• Event inputs – There are four general-purpose TTL contact closures on
the detector A (inputs) terminal that support the following functions:
– Remote or inject start
– Lamp on/off
– Chart mark input
– Auto zero
• Ethernet interface – The Ethernet connection on the rear panel of the
detector allows remote control and direct data acquisition from Waters
Empower and MassLynx workstations.
Making signal connections
The rear panel of the detector (see the figure on page 2-10 ) provides two
analog connectors and an Ethernet communications port for operating the
detector with external devices.
Make the signal connections to your detector, considering the following
conditions:
• Operating mode you select for the detector (stand-alone or remote
control)
• Types of instruments that make up your HPLC system
This section describes the input/output (I/O) and digital signal connections
that you can make from the two rear panel connectors and the Ethernet
connector.
The figure below shows an overview of the steps involved in making signal
connections to the detector.