10
FRONT PANEL
WITHOUT RCMI OPTION
ON
:
Power on button.
OFF
:
Power off button.
MUTE
: Mutes the MPA. When muted, press the
“ON” button to activate the MPA.
LED
:
The led is green when the MPA is
switched “ON”. The led turns red when the
MPA is in the “MUTE” mode.
Lower
LED:
Turns green when the MPA is ON.
WITH RCMI OPTION
ON
:
Power on button.
OFF
:
Power off button.
MUTE
: Mutes the MPA. When muted, press the
“ON” button to activate the MPA.
LED
:
The led is green when the MPA is switched
“ON”. The led turns red when the MPA is in
the “MUTE” mode.
Backlight on modulometer:
Turns on to indicate
that the MPA is on.
RED WINDOW
:
Infra-red receiver.
SOURCE SELECTOR
: Permits to select the different line inputs.
BALANCE
:
Permits to adjust in a range of 6 dB, the output level between left &
right.
INPUT LEVEL
:
The external scale is calibrated from –50 dB to 0 dB and indicates the
absolute attenuation obtained with the potentiometer.
The internal scale (fat scale) is calibrated from +12 dB to 0 dB and shows the input level
relative to 1 V when the modulometer indicates 0 dB. The same fat scale area also indicates
the allowed region in which the potentiometer must be set to operate with 0 dB on the
modulometer. If it is needed to set the potentiometer outside the fat scale range to obtain 0
dB on the modulometer, the input stages of the MPA could be saturated. In this case, to adapt
the input level, external passive attenuators should be installed.
The arrow indicates the best position if the MPA is driven by the NAGRA PLP or NAGRA PLL
pre amplifier.
