1-1
1 GENERAL INFORMATION
1.1 Introduction
This manual contains specifications, installation, operation, and programming
instructions of MML-4, MML-2 electronic load mainframes as well as the
MML-80-20-102 and MML-80-60-301 electronic load modules. Here “Load” means the
electronic load modules of Sorensen MML series while “Mainframe” the MML-4, MML-2
electronic load mainframes.
1.2 Description
The functions of MML-4 and MML-2 mainframes are the same. The former has four
slots for Load modules while the latter two slots. The functions of MML-80-20-102,
MML-80-60-301, etc. are all the same. The differences are in input voltage, load
current, and power ratings. An individual module may have one or two channels.
Each channel has its own channel number, load and measurement connectors, and
operates independently in constant current (CC) mode, constant resistance (CR) mode,
or constant voltage (CV) mode.
Figure 1-1 Front Panel of the Electronic Load
There are two groups of keypads on the front panel of the electronic load (see Figure
1-1). One is the Mainframe keypad; the other is the Load keypad. In this manual, the
Mainframe keypad is referred to as MODE; the Load keypad is referred to as SHORT.
1.3 Overview of Key Features
1.3.1 Configuration
•
Flexible configuration using plug-in electronic load modules to mainframes.
•
Local operation on front panel keypad.
•
Remote control via GPIB or RS-232C interface.
•
Photocoupler isolation to offer true floating Load.
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