One for All EXTENDER A1 FOR URC-7780 Instructions Manual page 26

What is essential is that Dev13 is unassigned, as it is not supported by the extender. The existence of
Dev13 is because of the Home Theatre facility of the unextended remote. Its operating system supports
up to 12 devices plus Home Theatre – it will not allow you to install 13 "ordinary" devices. If you have a
device assigned to Dev13, you must delete it before installing the extender. You must also delete Home
Theatre (which may or may not be Dev13) as it too is not supported by the extender, its features being
provided in other and more powerful ways.
If you need, or wish, to make changes to your current devices in the light of this information, now is the
time to do it. Do not use IR.exe for that purpose. Disconnect your remote from it and use instead the
setup procedures of the remote, accessed through a long Magic keypress. Devices are deleted through the
menu item Initial Setup/Devices/Delete Device, and Home Theatre is deleted through Advanced
Setup/Home Theatre/Delete Home Theatre. Note, however, that deleting a device also deletes any Key
Moves assigned to that device and these are not reinstated if you then add that same device back under a
different device button.
Device Labels
The device labels that display on the LCD screen are user modifiable through the menu item Advanced
Setup/Device Label/Change Device Label. They are also displayed, and may be edited, through the Other
Settings pane of IR.exe if the RDF file contains the entry
Labels=$0038,4
in its [General] section. But BEWARE, the current version 7.15 of IR.exe is not completely compatible
with the label handling of the native operating system of the remote. There are two problems:
IR.exe pads labels of fewer than four characters with ASCII spaces ($20) while the OS of the
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remote pads them with $FF. This causes labels to be misaligned on the LCD display, e.g. the
label TV, when selected, has both letters to the left of the central pointer rather than one letter on
each side. This is a minor issue.
IR.exe is unaware of the presence of a second set of labels, the default labels, stored in the
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EEPROM and which cannot be edited by the user. So if you add or delete a device through
IR.exe and insert or delete the user label through the Other Settings pane, the corresponding
default label should, but will not, be added or deleted. Like a time-bomb, this problem remains
invisible to the user until certain actions are taken. Any action that deliberately or incidentally
causes the user labels to be reset from the default labels can then be catastrophic. I have
performed a User Reset that left the remote unusable until I uploaded a valid setup from IR.exe.
It just asked Language, Set Day, Set Time, then back to Language again, with no means of
escape.
Because of this, I have decided that the risks of having this setting in the RDF outweigh the benefits.
This setting is absent from all the RDF files packaged with this extender. It is present in the RDF file for
the URC-7781 dated Aug 07, 2008 which I put in the Tools/RDF Files of the JP1 Forum but it is absent
from all versions of the RDF file for the URC-7780 posted there.
I recommend all installers of the extender to check the integrity of the label entries in the EEPROM, and
to amend them if necessary, although for the reason just explained, this problem is more likely to affect
users of the URC-7781 rather than the URC-7780. You make the check, and any necessary amendments,
in the Raw Data tab of IR.exe. The User Labels occupy the address area F038–F06B for the URC-7781
(EC38–EC6B for the URC-7780) and the Default Labels occupy the area F06C–F09F (EC6C–EC9F).
Each of these areas consists of 13 4-byte entries in succession, containing the ASCII coding of the
appropriate label for Dev1 through Dev13. The User Labels should encode the label text that is displayed
on the LCD screen, the Default Labels (for assigned buttons) should encode the Type as shown in the
Device Buttons pane of the General tab. In all cases a label of fewer than four characters should be
padded to four on the right with the hexadecimal value FF. Both labels of an unassigned device button
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