DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
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When
Microphone Level
is selected (above) this setting allows
Gain
to be adjusted. Gain is adjustable in 3 dB increments from
+9 dB to +63 dB.
Phantom Power
is available as a setting if Microphone Level was
chosen (above). Phantom power can be turned ON or OFF. When
ON it provides a supply voltage of 48v to the microphone.
High Pass
is a high-pass filter with selectable crossover points. The
crossover point can be set to: Off, 31 Hz, 62 Hz, 125 Hz or 500 Hz.
6. OUTPUT CONFIGURATION
The “Output Configuration” menu controls the signal passing to
loops (and/or loudspeaker when using the DL210), as well as the line
outputs. The loop outputs have comprehensive control, while the
line level outputs have the ability to change the name and apply EQ.
Each of the outputs can be configured individually. To set up Output
1, enter “Output Configuration”. Output 1 is the first input you can
adjust, so it is already selected. To get to the next input, rotate the
knob to the right.
6a. Name
This allows you to name the Output. To change the name, select the
first character and rotate the dial to change letters/numbers. When
the character you want is displayed, push the knob in to select that
character and move to the next position. When finished with the last
character of the name, rotate knob until “OK” is highlighted; then
push the knob in to save the name.
6b. Input Mixer
The Input Mixer provides level adjustment of each of the inputs
per each output. This is used when one (or more) input(s) may
be louder or softer than the others. You can use the headphones
plugged into the headphone jack to monitor the adjustments.
6c. Filters
Filters provide adjustment for a high pass filter and low pass filter
crossover frequency.
High Pass Filter
has selectable crossover points at: Off (None), 31Hz,
62 Hz, 125 Hz, and 500 Hz.
Low Pass Filter
has selectable crossover points at: Off (None), 16
kHz, 8 kHz, and 6.3 kHz.
6d. AGC
Automatic Gain Control measures the average level of the signal
and applies gain reactively to keep the output level constant. It also
limits the output power and reduces or eliminates distortion due to
clipping that would normally occur without AGC.
6d1-6. AGC Level, Hold Time, Attack, Release
Preset
provides default settings for Voice and Music, and only the
Amount is adjustable. A Custom preset allows adjustment of the
Hold Time, Attack, and Release. Voice is designed for pauses
in the audio, where Music is designed for more constant-level
sources.
Amount
of the AGC can be adjusted to a maximum of 20 dB of
around the calibrated level, or “target” level. For people familiar
with traditional AGC, the Target is internally set to the calibrated
level and is not adjustable, and the Minimum Level (also called
“Threshold”) is internally set relative to the calibration target level
and is not adjustable. The calibrated “target” level is set in Tech
Tools-Calibrate, and this is the level the AGC will attempt to hold.
Hold Time
is how long the gain is maintained on signal when the
automatic gain settings take effect. In the Custom preset, the Hold
Time is adjustable from 1 second to 60 seconds in 1 second steps.
Attack
is the speed at which the AGC reacts when the level of the
input signal crosses the threshold. Short settings react to the signal
quickly, while long attack times have a lagging effect. In the Custom
preset, the Attack time is adjustable from 0.5 s to 3.5 s in 0.5 s steps.
Release
is the amount of time that the AGC continues to work
after the input signal drops beneath the threshold. Short settings
release the signal quickly, while long release times have the effect
of sustaining the signal. In the Custom preset, the Release time is
adjustable from 0.5 s to 3.5 s in 0.5 s steps.
