XTA 4 Series, Руководство оператора, Страница: 9 / 58

Operators Manual Page 9
Front Panel Familiarisation
LCD Screen:
Shows, by default, the
name of the last recalled memory on the
bottom line of the screen, and the
current routing on the top line. Also
used to show all parameters as they are
edited, and all menu selections.
Control Keys: Selection and adjustment of parameters.
NEXT
key moves forward through list of parameters.
BACK
key moves backwards through list of parameters.
MENU
key activates the main menu – a second press selects the last menu edited – a third press selects
the last menu item. In this way, three presses on MEN U from the default screen will jump back to the
last parameter adjusted. Selection of different menus is accomplished using the
BACK
and
NEXT
keys,
or with the FREQ encoder.
ENTER
key enters the chosen menu, confirms selections, and changes filter types when editing
parametric sections.
BYPASS
will flatten the currently selected parametric sections, or input graphic equalisers. Note that,
for safety reasons, it is not possible to bypass the high and low pass filter sections.
QUIT exits menus back to the default screen.
Rotary Encoders: Three velocity sensitive encoders adjust the relevant parameters
as displayed on the screen.
Memory Card Slot: Will accept type I or type II PCMCIA SRAM cards and, using an
adapter, Compact Flash cards. This allows the unit to be cloned, memory sets saved,
presets loaded, and firmware updates installed.
Status LEDs: The four status LEDs show, from left to right, AES inputs selected
(flashing if not locked); AES outputs selected; Comms activity (only illuminates on
messages addressed to this particular unit); and a general-purpose spare indicator.
Input Sections: Control and monitor input signal paths.
Red MUTE buttons illuminate when pressed and mute audio for that channel.
EDIT
buttons illuminate yellow when pressed, and access gain on first press, then last
viewed parameter on second press, then exit on third press.
Input meters show dB from clipping point of the analogue to digital converters.
Yellow (
0dB
) LED illuminates 3dB from clipping. Red
CLIP
LED may illuminate
independently from the rest of the meter to show digital overflow. All four CLIP
LEDs illuminating indicates internal clipping after the ADC.
Output Sections: Control and
monitor output signal paths.
Red
MUTE
buttons illuminate when
pressed and mute audio for that
channel.
EDIT
buttons illuminate yellow when
pressed, and access gain on first press,
then last viewed parameter on second
press, then exit on third press. Output meters show dB from limiting. The yellow LED illuminates at the onset of
limiting. The red LED illuminates at 4dB into limiting (i.e. 4dB of gain reduction).