XPA U 3502 • Setup Guide (Continued)
For information on safety guidelines, regulatory compliances, EMI/EMF compatibility, accessibility, and related topics, see the
Extron Safety and Regulatory Compliance Guide
on the Extron website.
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When the STANDBY pin (pin 5) is shorted to ground (Pin 4), the amplifier goes into standby mode. Standby mode turns off all the
outputs, although the amplifier still receives power. The power LED on the front panel lights amber when the amplifier is in Standby
mode.
NOTE:
A 10k ohm resistor is included with the amplifier. If the resistor is connected between the
STANDBY
and
Ground
pin, the auto-standby timer is suppressed. The
STANDBY
pin can still be shorted to the
Ground
pin to put the amplifier in
standby.
Step 4 — Powering on Equipment
ATTENTION:
•
The amplifier must be powered on last.
•
L’amplificateur doit être mis sous tension en dernier.
Reconnect all the power cables and switch on all of the other equipment before attaching the IEC power cable and powering on the
unit. The power LED will light green.
Step 5 — Adjusting Attenuation
NOTE:
Set the volume control on the connected control device(s) to maximum and ensure that the amplifier
is not currently forced into standby mode via the standby pin prior to making adjustments.
Adjust audio attenuation using the rear panel adjustment attenuators as seen to the right.
See Rear Panel Features in the
XPA U 3502 User Guide
for more information.
ATTENTION:
•
The default position of all potentiometers when shipped is turned fully counter-clockwise (fully attenuated).
•
La position par défaut de tous les potentiomètres lors de leur expédition est orientée vers le sens antihoraire (atténuation
complète).
•
Do not use a screwdriver to adjust the potentiometers. The potentiometers should only be adjusted as needed using the
included tweeker (small screwdriver).
•
Ne pas utiliser de tournevis pour ajuster les potentiomètres. Les potentiomètres doivent uniquement être ajustés selon les
besoins avec le petit tournevis fourni.
•
While potentiometer tuning knobs may look like screws, they do not function in the same manner. Use a light touch when
adjusting to avoid applying excessive torque to the potentiometers.
•
Bien que les boutons de réglage du potentiomètre ressemblent à des vis, ils n’ont pas la même fonction. Exercez une
pression légère lors du réglage afin d’éviter un serrage excessif des potentiomètres.
•
Applying excessive torque can mechanically damage the potentiometer, rendering it inoperable and voiding the product
warranty.
•
Un serrage excessif peut endommager le potentiomètre, le rendant inutilisable et annulant la garantie du produit.
Step 6 — Checking LEDs
Check the Limiter/Protect and Signal LEDs on the front and rear panels to see if any problems are encountered (see Front Panel
Features and Troubleshooting in the
XPA U 3502 User Guide
for more information).
0
1
1
2
4
6
8
10
12
18
14
26
∞
0
2
1
2
4
6
8
10
12
18
14
26
∞
ATTENUATION
68-3545-50 Rev. A
04 21
