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10
DF1000
4. Connectors
To ensure the correct and reliable operation of the equipment, only high quality
balanced, screened, twisted pair audio cable should be used. XLR connector shells
should be of metal construction so that they provide a screen when connected
and, where appropriate, they should have Pin 1 connected to the cable screen.
XLR Connectors
- +
GND
+
-
GND
2 (+)
S
R
T
T
R
3 (-)
1 (gnd)
S
1 (+)
S
T
T
3 (-)
2 (gnd)
S
(1)
Balanced line output audio connector. Female XLR plug and male XLR chassis
connector with the following pinouts: 1 = ground; 2 = hot (+); and 3 = cold (-).
(2)
Balanced line input audio connector. Male XLR plug and female XLR chassis
connector with the following pinouts: 1 = ground; 2 = hot (+); and 3 = cold (-).
Balanced line input audio connector. Male TRS plug to female combo XLR/¼" TRS
chassis connector with the following pinouts: 1/Sleeve = ground; 2/Tip = hot (+);
and 3/Ring = cold (-).
(3)
Unbalanced line input audio connector. Male TS plug to female combo XLR/¼" TRS
chassis connector with the following pinouts: 2, 3/Sleeve = ground/cold (-); and 1/
Tip = hot (+).
Euroblock Connectors
DF1000 also uses Euroblock connectors for all analogue audio connections. The
following graphics off er guidance for correctly wiring common audio connectors
(XLR, ¼", RCA) to the Euroblock connections.
1
1
2
3
+
T
R
S
R
T
+
S
2
T
S
T
S
+
S
+
T
T
S
3
T
R
S
T
R
S
+
+
4
X
1
2
3
+
N/C
S
+
T
S
X
(1)
Balanced inputs. Male XLR and male ¼" TRS connectors to Euroblock with the
following pinouts: 1/Sleeve = ground; 2/Tip = hot (+); and 3/Ring = cold (-).
(2)
Unbalanced inputs. Male ¼" TS and RCA connectors to Euroblock with the
following pinouts: Sleeve = ground/cold (-); and Tip = hot (+).
(3)
Unbalanced stereo to dual balanced inputs. Male ¼" TRS connectors to Euroblock
with the following pinouts: Sleeve = ground/cold (-); and Tip = hot (+).
(4)
Balanced and unbalanced outputs. Euroblock to female XLR (balanced) and male
RCA (unbalanced) with the following pinouts:
XLR: 1 = ground; 2 = hot (+); and 3 = cold (-).
RCA: Sleeve = ground; Tip = hot (+).
Operation
Initial Setup
For a basic fi rst setup with the DF1000 in your sound system, use the following
procedure:
(1)
Make all appropriate audio and power connections to the DF1000.
(2)
Power up the sound system's preamp or mixer.
X
(3)
Power up the DF1000.
(4)
Power up the sound system's power amplifi er.
(5)
With the ACTIVE button set to bypass mode, set the sound system's gain for
normal system operation.
X
(6)
Press the ACTIVE button to set the unit to active mode.
(7)
Press the RESET button to clear the memory and reset the fi lters.
(8)
The DF1000 is now ready for operation and will automatically fi nd problem
X
frequencies and attenuate those frequencies to eliminate feedback.
Bypass Mode
Bypass mode allows you to quickly pull the DF1000 out of the signal path. To use
bypass mode, take the following steps:
X
(1)
Press the ACTIVE button to engage bypass mode.
(2)
Switch between active and bypass modes to hear a comparison between the
system's operation with and without feedback suppression.
X
Filter Reset
Over time, all of the 32 individual fi lters per channel may be assigned to problem
frequencies. If an additional problem frequency is then detected, the DF1000 will
automatically re-assign the fi rst fi lter to the new problem frequency. It may also
X
be necessary to reset the unit in order to restore the sound system's tonal balance
and frequency response.
(1)
Before resetting the unit, reduce the system gain and ensure that all microphones
are off .
(2)
Press the RESET button.
(3)
The white background LED will fl ash to indicate the fi lters have been reset and the
memory is cleared of all settings.
(4)
T
Slowly increase the gain of each microphone to proper operating level.
(5)
The DF1000 will automatically detect and suppress any problem frequencies.
Quick Start Guide
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