Specifications

7
• Next, set the MIC GAIN by pressing the GLOBAL
switch until you see the menu: MG. 0 dB.
• W
hile the music is playing, y
ou should see the input
level
from the measurement microphone reading
on the VU meter located under the LCD display.
If
not, use the Data Wheel to adjust the gain from 0dB
through +60 dB.
• To keep the new change, press STORE to confirm the
change to be saved and you will exit the GLOBAL
mode and both the STORE and GLOBAL LED’s will
turn off.
• The VU meter should deflect about half way. If not,
repeat the above steps until it does.
Using the Microphone Input
You can use the D1500 as an “in-line device" using the
rear panel XLR balanced inputs and outputs, but for
many RTA applications, you will want to use a mea-
surement, (test), microphone to analyze the response,
phase or level of a sound system. A measurement
microphone is a special microphone (usually a con-
denser microphone), designed to pick-up sound with
an extended frequency range, linear or flat re
sponse,
and a natural sound.
A perfect choice for this is the
Samson MM01 Measurement Microphone. For a quick
set up for
using a measurement
microphone with the
D1500 , follow these steps.
•
Press the RTA switch located in the Navigation sec-
tion so the amber LED lights.
•
Plug the measurement microphone into the MIC
INPUT located on the D1500 rear panel.
Note: The D1500 ’s microphone input includes pha
tom power, which is always on, for operating con-
denser microphones.
• To set the D1500 for microphone input, press the
GLOBAL switch until you see the menu: Inp. xxx.
• Now, use the Data Wheel to select MIC. You know
the input is set to mic when the LCD menu reads:
Inp. MIC. Press STORE.
• Depending on the type of sound system you are
measuring you will want to position the micro-
phone approximately 5-10 feet from the speaker
system.
• Once the mic is in place, play your program music
through your speaker system.
D1500 Quick Start