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9. The Locked to Input LED will illuminate whenever an AES-3 or
S/PDIF digital input signal is recognized by the digital receiver. In Pass
Thru or In/Out modes, this indicates that the sample rate of the digital
output signal matches that of the input. In Cable Test mode it comes on
to indicate a good test cable; the output sample rate is dictated by the
Sample Rate switch.
10. The Output Sample Rate Switch controls, under some conditions,
the sample rate of the digital audio transmission. If there is no digital
input present, or in Cable Test mode, the output sample rate is
determined by the sample rate switch. If a digital input signal is present
and locked in Pass Thru or In/Out modes, the digital output sample
rate will mimic the sample rate of the digital input and this switch has
no effect.
11. Output Level controls the analog level presented to the A/D
Converter input. The mic, tone oscillators, and aux input are affected
by this control, typically adjusted to a level where the Clip LEDs
occasionally flash on.
12. Speaker Level adjusts the volume of the built-in speaker.
13. The Power Switch applies power from the external supply or the
batteries.
14. The Power LED is illuminated when the Power switch is ON. It will
dim as the batteries lose power, thus giving an indication of remaining
battery life.
15. Line/Phones Level controls the analog audio level present on the
Line Out 3.5mm TRS jack.
16. The Aux In Jack allows the operator to connect any analog source
to the AESQbox. The maximum input level is +4dB. This is an
unbalanced 3.5mm TRS jack with the left channel connected to the tip,
the right to the ring, and the sleeve to common.
17. The Line Out Jack provides a high-quality analog version of any
digital audio source received by the AESQbox. Peak output level is
+4dB, and the output is capable of driving headphones from 32 to 100
Ohms impedance. The left channel is connected to the tip, the right to
the ring, and the sleeve to common of the unbalanced 3.5mm TRS
jack.
18. The Battery Compartment is a slide out drawer that accepts four
“AA” alkaline cells.
19. The 6VDC external power jack is a 5.5mm x 2.1mm size with the
center contact wired positive and the barrel contact negative. A 6VDC
1000mA plug-in power supply with the correct mating connector is
supplied with the unit.
Controls and Functions
1. Input Sample Rate LEDs indicate the detected sample rate when
locked to a digital audio input. Only one will be illuminated at a time,
either full on or flashing, except during the Power-On Self-Test.
Steady state on indicates professional AES-3 data and flashing
denotes consumer AES-3 digital signal.
2. The Fault LED has three on states. Fully on means that a
microcontroller fault has been detected. Flashing slowly indicates the
unit is locked to a signal but can't determine the sample rate, or in
Cable Test mode that the input sample rate does not match the
output sample rate. Flashing rapidly means that the digital input
signal is a non-PCM format, and cannot be decoded as audio.
3. The Speaker Monitor A/B Switch controls which of the two
available audio channels is presented to the speaker for monitoring.
In the center position, the A and B signals are both on.
4. The Operating Mode Select Switch selects the desired operating mode.
5. The Analog Input Source Select Switch controls which of the three possible
analog input sources will be transmitted as digital AES-3 and S/PDIF.
6. The Clip LEDs monitor the analog input level to the A/D converters and
will start flashing dimly when the signal is about 4dB below digital full-scale,
and will illuminate steadily at about 1dB below digital full-scale.
7. The AES Digital Input XLR accepts standard AES-3 digital audio signals
over 110 Ohm balanced shielded cable, and the S/PDIF Digital Input BNC
accepts standard S/PDIF digital audio signals over 75 Ohm coaxial cable.
Input levels may be as high as 5V p-p and as low as 250mV p-p. Input
sample rates may range from 32kHz to 192kHz.The two jacks are
transformer isolated and may be used as a loop thru balun for converting
from 110 Ohm to 75 Ohm transmission lines.
8. The AES Digital Output XLR outputs standard AES-3 digital audio signals
over 110 Ohm balanced shielded cable at 5V p-p. The S/PDIF Digital Output
BNC outputs standard S/PDIF digital audio signals over 75 Ohm coaxial
cable at 5V p-p. With the unit off, the XLR and BNC can also be used as a
loop thru balun.
99 Ling Road . Rochester, NY 14612
Phone 585 663-8820 . Fax 585 865-8930
Email: [email protected]
http://www.whirlwindusa.com
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