IRD-60 SENSOR
The IRD-60 is an externally-mounted IR sensor. Its purpose is to receive the IR signal from the
IRN-10 and/or the IRH-15c and send it to the input of the IRR-30P for amplification. The ideal
location of the IRD-60 is the center of the ceiling in the room.
A
cable (RG-59 75 ohm coaxial
cable fitted with “F” connectors) is then run from the IRD-60 to the back of the IRR-30P. The
sensor comes with a mounting-bracket that can be used for mounting to either a solid or drop
ceiling (tiles).
Drop Ceiling Mount:
To mount to a drop-ceiling tile, detach the bracket (9) from the back of the IRD-60 by removing
the screws
(
10
).
Next, after removing the ceiling tile from the ceiling grid, determine the position
on the tile panel for the sensor and make a 1 inch hole through the tile (this is for the cable that
will be attached). Then sandwich the tile between the sensor (on the front side) and the bracket
(on the back side). Use the
two mounting screws to attach. Last, attach the cable and replace
the
tile.
9
10
When mounting to a solid ceiling, first bend the mounting bracket
UP
at a 90
o
angle (11). Next,
bend the ends of the bracket to a 90
o
angle
(
12
).
After
attaching the cable to the back of the IRD-
60, use the appropriate screws (13) to attach the bracket to the ceiling.
11
12
The IRD-60 has an acceptance angle of
360
o
and a working range of 60-70 feet.
13
IRR-30P RECEIVER (see illustration on page i)
I. Receiver Front Panel:
A.
POWER
Switch - turns the receiver
ON
and
OFF
. When
ON
the LED will glow
red.
B.
Receiving
SENSOR
-
internal receiving infrared
sensors.
C.
CHANNEL
1/2
Indicator
-
corresponding LED
glows
green
when
receiving
CHANNEL
1
or
2.
D.
CHANNEL
1/2
Volume -
adjusts
the
output volume
for
CHANNEL
1
or
2.
E.
LINE
1/ 2 Volume - adjusts the output volume for
LINE
1 or
2.
F.
MIC TONE
-
adjusts the system’s high frequency
tone
II. Receiver Rear Panel:
G.
EXT.
SENSOR INPUT #1
-
set
the
switch
on
the
side
of
the
receiver to
EXT
to
use this connector.
This
disengages the front panel
SENSOR
(
B
). Set the switch to
INT
if not using this
connector.
H.
EXT.
SENSOR INPUT #2/3
-
attaching external sensors
here
extends
the
receiver’s potential
working
distance.
I.
SPEAKER
- the 4 ceiling or wall-mounted speakers are attached here. Carfully follow the
+
and
–
markings.
J.
PRE OUT
- this is a mono “Line-Level” output. Its level can be adjusted
independently.
K.
PRE OUT
Volume Adjustment
-
used to adjust the volume from
the
PRE OUT
jack.
L.
LINE
1
and
LINE
2
Inputs
-
any
external
audio
source
with
a
standard “Line-Level”
output
such
as
a
CD
player, VCR or DVD player can be attached
here.
M.
DC 15V
- this is the power input. Plug the small, round connector of the AC-DC adapter (
BC-30
) in
to
power receiver (15VDC @ 2.7A - center positive). Plug the twin-blade end of the adaptor into
a
powered 110VAC wall
jack.
III. Mounting the Receiver:
As infrared operates “line-of-sight” and can be interrupted by solid objects, it is strongly suggested
that the receiver (or external sensors) be mounted or placed in a location that puts the receiving
sensors above the audience’s heads or any other obstacles.
IV. Overall System Setup:
In general, the IRR-30P receiver is installed near the front of the room facing towards the back and
about five feet above the floor. Four ceiling speakers (if there is a drop ceiling grid) or four wall-
mounted speakers are installed and wire is run from each of the speakers to one of the SPEAKER
terminals on the back of the receiver.
A
single IRD-60 ceiling-mount external sensor is installed in the
center of the ceiling and a cable is attched from it to one of the EXTERNAL SENSOR connections on
the rear of the IRR-30P. The teacher wears the IRN-10 and sets it to CHANNEL 1. The IRH-15c,
set to CHANNEL 2, is used as a pass around mic for students. If a DVD player, CD player or video
tape player is used, its audio can be attached to either LINE 1 or LINE 2 on the back of the IRR-30P.
60-70 ft.
60-70 ft.
360
o
