Using The D1500'S Eq Display; Operating The Phase Meter; Using The D1500 As A Vu Meter - Samson D-150 Owner's Manual

Operating the D1500

Using the D1500's EQ Display

The D1500 can be used to display the equalization
curve from 1, or up to 16, D2500 Digital Equalizers.
The D class units communicate to each other using
MIDI or Samson's D-Net communication protocol.
Once you connect the MIDI or D net between the
D1500 and D2500, you can monitor the D2500's eq
curve on the D1500's large LED display. Press the
EQ button. When you load in an EQ curve or move a
fader on the D2500, you will see the corresponding
position of each frequency band displayed on the
D1500.
For a detailed explanation of connecting the D1500's
MIDI and D-net to display the D2500 curve see page 14
in this manual.

Operating the PHASE meter

Before you get started using the PHASE METER, press and
hold the PHASE switch for about two seconds and take notice
of the parameters that can be adjusted while using the PHASE
METER.You'll notice that only the WEIGHT is illuminated indi-
cating that this parameter can be edited.
The D1500 includes a powerful meter for measur-
ing phase response, which is accessed by pressing
the PHASE switch. The Phase meter displays positive
phase when the LED's to the right of center illumi-
nate. The Phase meter displays negative phase when
the LED's to the left of center light. The Phase meter
is simple to use, just follow these steps.
• Apply a signal to the D1500's Left and Right input.
• Press the PHASE switch to select the D1500 to
phase meter mode.
If the audio is in-phase, the Phase meter will read all
the way to the right. When the D1500 measures an
out-of-phase signal, the meter will read all the way to
the left.
When the Phase switch is lit by itself, you can
use the Data Wheel to scroll through and moni-
tor Correlation, as well as Peak and RMS values.
Correlation gives an indication of the degree to
which the two signals are alike. Higher numbers indi-
cate more difference between the two signals than
lower ones.
• Press the WEIGHT switch to change to a weighted
response curve.
• Once you set the response curve, if any, press the
WEIGHT switch again to exit and go back to the
Phase mode.

Using the D1500 as a VU Meter

The D1500 can be turned into a massive level meter
measuring both PEAK and RMS levels simultaneously.
The inside narrow meter shows the PEAK level and
wide outside meter displays the RMS or average. If
you press and hold the VU switch for two seconds,
you'll see that the parameters GAIN, REF and RES can
be adjusted when using the VU meter.
• Press the VU switch to select the D1500 to VU level
meter mode.
• Set the proper operation reference level by pressing
the REF switch and select 10dBV, +4 dBU or Digital
Maximum.
• Now, press GAIN and adjust the the RTA's refer-
ence point from 0dB to 120dB. You can watch the
response of the meter and use the Data Wheel to
get the meter to respond in a good range.
• Press the RES switch to change the resolution 0.5,
1dB, 2dB, 3dB or 6dB per LED.
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