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7. The LED DIMMER control comes set for full display brightneess when shipped but can
be adjusted to suit the monitoring facilities needs so as not to be distracting if a less than
fully bright meter display is desired.
Note: The level meter brightness CANNOT be adjusted to “Full Off.” This is to avoid possible
operator error and wasted troubleshooting time if turned all the way down.)
8. With both channels having the same audio present, verify that the PHASE indicator LED
is illuminated GREEN. Remove audio from one channel and verify that the PHASE LED
turns RED.
Note: The PHASE LED will always indicate RED when there is a loss of one audio channel.
9. Reverse the phase of the audio input at one of the XLRs (by reversing the wires
connecting to pins 2 and 3) and verify that the PHASE indicator LED is illuminated RED.
This is a test for mono-compatibility.
10.Insert a true stereo signal at the XLR inputs and verify that the PHASE indicator LED is a
flickering green to amber color. This is normal for a stereo signal. The amount of RED or
GREEN in the PHASE LED is an indicator of how much phasor information is present in
the monitored stereo signal.
11.With analog audio present at the balanced XLR outputs on the rear panel, verify that the
SIG indicator LEDs at both input and output are illuminated.
12.(Steps 12, 13, and 14 are for digitally-equipped units only.) With digital audio present to
the BNC connector(s) AES1 (and AES2), verify that the SIG indicator LED(s) associated
with the BNC digital inputs are illuminated GREEN on both the front and rear panels.
13.Remove the Digital signals and verify that the LED illuminates RED on both the front and
rear panels.
14.Place distinctive audio signals at both the Analog and Digital inputs and then toggle
between the Analog and Digital sources via the front panel using the A/D SELECT
button. Verify that the switching function is in accordance with the source selected. The
LED indicator should follow the source selected.
15.With audio still applied to the unit, vary the DIMMER control to the preferred brightness
level for the LED meter displays.
16.(For video-equipped units only.) Insert a video signal through the rear panel BNC video
connector and verify that the expected display is present. Adjust front panel screwdriver
video controls (COLOR, TINT, CONTRAST, BRIGHTNESS) to suit the desired LCD
presentation. (Settings are factory preset for optimum viewing and should not normally
need further adjustments.)