Specifications

EQUIPMENT DESCRIPTION ENG
Pag. 8
4 EQUIPMENT DESCRIPTION
4.1 FRONT PANEL
1 TEST TONE
OSCILLATOR
SWITCH
The Parrot contains an oscillator that can produce a sine wave tone
at a 1 KHz / 0
dBm for system setup ad alignment.
When TONE button is pressed (LED glowing), the sinusoidal TONE is placed on
all the outputs
(Out 1, Out 2, Out 3 and Out 4) by replacing the exsisting source
signal. When released, the audio distributor returns to its previous state (normal
operation). The oscillator frequency and the injection levels can be easily adjusted
via internal trimmers (see Section 5.4)
2 ‘POWER ON’
LED INDICATOR
It displays the power supply presence. If the LED is not lit, confirm that the main
power source is active, that the main switch is on and that the connector on the
cord is securely mated with the plug on the back panel.
3 INPUT LEVEL
CONTROLS
These controls should be used to set the optimal input gain for both Left and Right
signals. A recessed switch enables the Gain adjustement.
•
With the switch released, the input gain factor is fixed at 0 dB (unity gain
factor) and can not be altered
•
With the switch pressed (LED glowing), the gain factor can be adjusted via
the separated L &R trimmers. Adjustment in the range +/- 20 dB is possible.
4 AUDIO DETECT
Bi-color LEDs enabling quick recognition of input audio level.
LED OFF Audio level below 0 dBm
LED turned GREEN Audio level ranging between 0 and + 6 dBm
LED turned RED Audio level higher than + 6 dBm
5
OUTPUT LEVEL
CONTROLS
These controls should be used to set the optimal level for both Left and Right
signals on each Output group. A recessed switch enables the Gain adjustement.
•
With the switch released, the output gain factor is fixed at 0 dB (unity gain
factor) and can not be altered.
•
With the switch pressed (LED glowing), the output gain may be varied from
– 20 dB to 20 dB by adjusting the pre-set trimmers, which are accessible
through the holes in the front panel
Ref. also to the Parrot’s Block Diagram (Chapter 6).