Exchange Of Modules - DEV 2190 User Manual

User Manual DEV 2190

Recommendations for the output ports of distribution options:
Best signal quality is achieved by connecting the signal receivers symmetrically
to the output ports
• 1...2 and 3...4 of each 1:4 splitter;
• 1...4 and 5...8 of each 1:8 splitter;
• 1...4 / 5...8 and 9...12 / 13...16 of each 1:16 splitter;
• 1...4 / 5...8, 9...12 / 13...16 and 17...20 / 21...24, 25...28 / 29...32
of each 1:32 splitter;
• 1...4 / 5...8, 9...12 / 13...16, 17...20 / 21...24, 25...28 / 29...32 and
33...36 / 37...40, 41...44 / 45...48, 49...52 / 53...56, 57...60 / 61...64
of each 1:64 splitter;
• (an applied 1:128 splitter is to be connected in the same way);
and by connecting impedance matched loads to the unused ports.

Recommendations for the input ports of combiner options:
Best signal quality is achieved by connecting the signal transmitters
symmetrically to the input ports
• 1...2 and 3...4 of each 4:1 combiner;
• 1...4 and 5...8 of each 8:1 combiner;
• 1...4 / 5...8 and 9...12 / 13...16 of each 16:1 combiner;
and by connecting impedance matched loads to the unused ports.

If all cables are connected, the device can be powered up.
Now the LNB power can be turned on for the modules, which are required to
feed power to an LNB.
4.2.4

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.
If a module has to be exchanged or if a DEV 2190 is to be upgraded with a third
power supply module or with amplifier modules -if ordered with Option(s) 26, i.e.
prepared distribution options, combiner options, IRD controlled switch
options/extensions, but without the corresponding amplifier module(s)-, the
following instructions are to be noticed.
Note that only modules are to be exchanged by the customer, which are fixed to
the chassis using knurled head screws; "modules" which are assembled with regular
Torx screws are to be treated by DEV Systemtechnik, only!
Even though the modules are hot pluggable components, it is recommended to
power down the device for exchange operations to avoid short circuits!
Removal of a module:
Any cable attached to the front side of the module (e.g. an Ethernet cable at the
CPU 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).
Note:

The CPU module provides a push down lever (please refer to chapter 3.2.3) to
simplify the extraction of the module.
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