Indication:
The blanked input LED goes out, and no input is set until any
other input is selected, and thereafter the blanked input is unable
to be selected until it is re-enabled. If there is no reaction then
the unit is in lockout mode and must be unlocked before setting.
Status:
The blanked input is unselected and unit is in Mute mode until
another input is selected. Blanked input does not react to any further
selection, offset, unity or mode change attempts. If there is no
reaction then the unit is in lockout mode and no change is made.
9. User programs input level offsets (Front Panel or RS-232 port) (Unlocked mode
only)
Input offsets are used for equalizing volume gain levels between different inputs that have
different output levels, so that when an input is selected the overall volume of the system
will not change.
User input:
For each individual input to be changed, and with unit in operate
mode (ie not during warm up cycle) user holds down input select
button and rotates volume control, counter-clockwise for lowering
input level offset, and clockwise for increasing input level offset.
Releasing the input button returns the volume display to show the
level it was before the input offset was programmed. If muted then
mute releases on volume up or down, to show effect of offset.
Addressable through RS-232 port also – see specific section for
command structure.
Indication:
Volume display changes to display that input offset level while input
button is held down. If offset level is at 00 and volume control is
rotated counter clockwise then display shows a – in front of the two-
digit display while input button is held down. Rotating volume
control clockwise from 00 shows a positive number. When the input
button is released the volume display returns to show the gain level
before the input offset was programmed. If there is no reaction then
the unit is in lockout mode and must be unlocked before setting.
Status:
Unit stays in operate mode and adjusts the volume of that input
down as the user rotates the volume control. Once user releases the
input button the unit remains at the set volume setting (while
displaying the setting the unit was at before the input was
programmed.) If there is no reaction then the unit is in lockout
mode and no change is made.
10. User changes selected input to unity-gain mode (Input 1 – 6 only) (Front Panel or
RS-232 port) (Unlocked mode only)
Unity gain is used when there is another unit in the system that in an alternative system
configuration (typically multi-channel surround sound) will control gain to the same
channels that the preamplifier is controlling in the two-channel system configuration.
In this case, to achieve proper system volume balance and make gain adjustment more
TL6.5 Preamplifier Owner’s Manual
VTL
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