Table of Contents
Advertisement
Interfacing to the KE-USBMX20 Header
The header on the KE-USBMX20 consists of 9 configurable pins.
The pins are designated as "1" through "9".
Use the supplied KE-USBMX20.EXE program to configure the
header pins as either Rows or Columns. Keystrokes are initiated
by shorting a Row pin to a Column pin through a contact closure.
The pins that are defined as Columns will sink current while
scanning the matrix. The Rows are used to read the status of
the inputs when a Column is active.
Keypads with male headers can be directly plugged onto the KE-
USBMX20 connector. KE-USBMX20 pins can be configured to
be either Rows or Columns to allow for this direct attachment.
*Note:
Keypads with male pins may be connected directly. For
membrane keypads with female headers, adapters may be used
to directly connect from the pigtail to the KE-USBMX20 header.
(See Accessories on page 20)
The
KE-USBMX20
connects
keypad header. Secure with
the adhesive pad included
or with your own fastening
system.
View of the 9 pin female
header pin designations as
seen from the bottom of the
KE-USBMX20
3
header
directly
to
the
Advertisement
Table of Contents
