User Manual DEV 1953
32
Copyright DEV Systemtechnik GmbH 2015-2017
4.2.5
Installation and Exchange of Modules
The product is usually delivered with the ordered modules, which are already
installed. Therefore, you may proceed in reading the next chapter.
In case that a module has to be exchanged or if the DEV 1953 is to be upgraded
with additional module(s), the following instructions are to be noticed.
Note:
"Modules" which are assembled using regular Torx screws are to be treated by
DEV Systemtechnik, only.
Though the exchangeable modules are hot pluggable, it is recommended to
power down the device for exchange operations to avoid short circuits and for
safety reasons. There may be situations where a longer lasting interruption of
the signal transmission is not permitted, so -for instance- an exchange of a
power supply module has to be performed while the device is powered up. In
this situation, the operations as described below can be performed without
problems, but have to be carried out with the utmost caution.
After removing, adding, or exchanging a switch module (or a distribution
amplifier module) while the device is powered up, the DEV 1953 has to be
restarted to update the CPU module regarding the applied changes.
This can be done without interruption of the signal transmission.
If exchanging or installing optical modules, please especially refer to the
warnings regarding laser safety stated in chapter 2.3.
If the CPU module is to be exchanged, the Micro-SD card of the old CPU module
is to be inserted in the exchange CPU module.
The CPU module provides a push down lever to simplify the extraction of the
module (please refer to chapter 3.2.24).
Note that in rare cases the insertion of a module may cause an automatic
device reset.
The device is to be equipped with at least one switch module (or one
distribution amplifier module). If not a single switch (or distribution amplifier)
module is installed or detected, the device signalizes this by a permanent event
indication (i.e. the channel LEDs at the device panel are blinking and this cannot
be stopped).
Removal of a module:
Any cable attached to the front side of the module is to be disconnected it in the
first step. For the removal unscrew the (all) knurled head screw(s) of the module
(or of the blind plate) before gently pulling out the module completely (or before
taking off the blind plate).
Installation of a module:
In the first step, plug in the module by inserting it into the two card guides of the
desired slot and by gently pushing the module into the chassis that it levels with the
rear side of the device. Screw in the (all) knurled head screw(s) of the module, next.
Finally, (re-)connect the corresponding cables to the module.
