Extron Electronics MTPX Series User Guide - Manual (Page 35)

3-9 MTPX Twisted Pair Matrix Switchers • Operation
PRELIMINAR
Y
Definitions
The following terms, which apply to all Extron matrix switchers, are used
throughout this manual:
Tie — An input-to-output connection.
Set of ties — An input tied to two or more outputs. (An output can never be tied
to more than one input.)
Configuration — One or more ties or one or more sets of ties.
Current configuration — The configuration that is currently active in the
switcher (also called “configuration 0”).
Global memory preset — A configuration that has been stored. Up to 32 global
memory presets can be stored in memory. Preset locations are assigned
to the input buttons and output buttons. When a preset is retrieved from
memory, it becomes the current configuration.
The switchers have 32 presets that can be selected from the front panel for
either saving or retrieving.
Power
Apply power by connecting the power cord to an AC source. When AC power is
applied, the switcher performs a self-test that flashes the front panel LEDs and then
turns them off. An error-free power up self-test sequence leaves the Video LED and
the Audio LED on, and all other LEDs unlit.
The current configuration and all presets are saved in non-volatile memory. When
power is applied, the most recent configuration is retrieved. The previous presets
remain intact.
If an error occurs during the self-test, the switcher locks up and does not operate.
If your switcher locks up on power-up, call the Extron S 3 Sales & Technical Support
Hotline. See the rear cover of this manual for the phone number in your region of
the world.
Front panel security lockouts
In the procedural descriptions that follow, it is assumed that the switcher is in Lock
mode 0 (fully unlocked). The following two Lock modes are also available:
• Lock mode 1 — All changes except selecting Lock mode 0 (unlocking the
switcher) are locked from the front panel. Some functions can be viewed.
• Lock mode 2 — Advanced features are locked and can be viewed only. Basic
functions are unlocked.
N The switcher is shipped from the factory in Lock mode 2.
See “Setting the front panel locks (Executive modes)” on page 3-40 for a detailed list
of basic and advanced functions affected by the locks and the procedure to set the
various front panel locks.