User Manual DEV 1951
36 Copyright DEV Systemtechnik GmbH 2004-2017
No autonomous switching is performed in Remote Mode if the DEV 1951 is
equipped with sensing switch modules (and/or digital signal switch modules).
Neither Time Based Switching nor TRAC initiated switching is performed in
Remote Mode, as well.
Note:
For products with the preceding version of the device panel providing a "Local"
push button (instead of the mode push button) and a single "Remote" LED
(instead of the three operation mode LEDs), only:
The "Remote" LED at the device panel is on in Remote Mode, but it cannot be
distinguished whether the device is in Remote Mode or in Auto Mode.
5.1.3 Auto Mode
The Auto Mode is used for Time Based Switching (please refer to chapter 5.5.7.3.3),
or for the optional TRAC functionality (chapter 5.5.7.3.4), or for autonomous
switching if the DEV 1951 is equipped with sensing switch modules (and/or digital
signal switch modules).
As in Remote Mode, the status of the DEV 1951 is indicated via the LEDs at the
device panel and via Web Interface, but the buttons at the device panel are locked
and the control functionality of the Web Interface is disabled.
The digital interface is disabled in Auto Mode as well as the functionality of the
different remote protocols (SNMP, Sandar Prosan, Leitch, and QEC) to issue
switching commands and to modify the settings of the device. However, is possible
to issue status queries and to perform some changes on the operation behavior of
the device, e.g. via the Sandar Prosan PMxy commands (chapters 5.6.3.6…5.6.3.9).
Note:
For products with the preceding version of the device panel providing a "Local"
push button (instead of the mode push button) and a single "Remote" LED
(instead of the three operation mode LEDs), only:
The "Remote" LED at the device panel is on in Auto Mode, but it cannot be
distinguished whether the device is in Auto Mode or in Remote Mode.
Which of the functionalities is activated in Auto Mode can be selected via Web
Interface (chapter 5.5.7.3.2):
the Time Based Switching functionality (chapter 5.5.7.3.3); or
the optional TRAC functionality (chapter 5.5.7.3.4); or
the autonomous switching functionality if the DEV 1951 is equipped with one
or two sensing switch modules (and/or digital signal switch modules):
5.1.3.1 Autonomous Switching Functionality
The primary input port "In A" and the secondary input port "In B" of the sensing
switch module(s) (digital signal switch module(s)) are continuously monitored
regarding the present RF level (regarding the present digital signal quality,
respectively) if
a. the "Auto Mode Assignment" is set to "Autonomous Switching"
(please refer to chapter 5.5.7.3.2), and if
b. the sensing switch module(s) (digital signal switch module(s))
is (are) switched to the primary input port, and if
c. Auto Mode is activated.
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