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EPU160 User Manual EDID-2001-MAD
Hardware Installation
After the software installation is completed the mmb16 unit or units can be connected to a PC USB port or a
powered USB Hub. The USB port provides the power to operate the mmb16 unit. The units will be
automatically recognised as individual serial ports. The port number assigned can be easily identified by using
the Serial Port Monitor utility. Knowing the port number is not necessary for operation with Chart, though.
The DB25 connector of the mmb16 has 16 input lines. These are internally pulled up to 3.3V, and events can
be represented by either:
-
A pull-down to ground (contact closure), e.g.: a relay or switch.
-
TTL voltage level (up to 5V). In this mode, 2.65V or higher will count as a “High” input and 1.00 Volt
or lower as a “Low”
No configuration options need to be set to choose the interface type, and the inputs can be a mixture of
contact closure or TTL.
DB25 Pinout
The connector on the rear of the mmb16 is a DB25
female. The diagram to the right is looking into the
mmb16.
Inputs 1-8 are Pins 1-8 Pins 9-13 are ground
Inputs 9-16 are Pins 14-21 Pins 22-25 are ground
It is useful to initially connect some of the event lines to user operated switches which can simulate events in
order to assist in initial software familiarization.
Using the Extension
Once installed and configured, the Chart extension will automatically gather events from the mmb16 while
recording, and add comments to the chart file at the time the events occurred.
The default configuration of the mmb16 will add a comment across all channels for a rising or falling edge on
any input, so you can get started straight away by simply starting to record in Chart, then toggling an input
on the mmb16.
Because the mmb16 is a USB device, it can be used by only one thing at a time, the first chart document you
open or create will get control of the mmb16. To give control to another document, close the first one
before opening/creating the second.
Configuring the mmb16 Device
The mmb16 extension adds a
Configure mmb16 Hardware
menu item in
Chart’s
Setup
menu.
If you have one or more mmb16 units attached, and aren’t recording, you
can choose this item to configure them. mmb16 configurations are stored
in the device itself, and are independent of Chart settings files.
The default configuration of the mmb16 will insert a comment across all
channels, when a change is detected on any of the 16 inputs.
The comment added is made up of the device name, input name, and name of the high/low state that the
input has changed to.
Choosing the
Configure mmb16 Hardware
menu option shows the following dialog:
