Radium Radium 216MHz User manual

user guide
920SR speaker
921T body-worn transmitter
922T handheld transmitter
923C charging stand
216MHz
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contents
922T handheld transmitter
operation . . . . . . . . . . . . . . . . . . . . . . . .34-39
connecting to auxiliary devices . . .40-42
additional accessories . . . . . . . . . . . .43-44
troubleshooting . . . . . . . . . . . . . . . . .45-46
Radium channel numbers and
corresponding frequencies . . . . . . . . . . . .47
product specifications . . . . . . . . . . . . .48-50
warranty . . . . . . . . . . . . . . . . . . . . . .51-53
code of federal regulations . . . . . . . . .54-55
regulatory approvals . . . . . . . . . . . . . .56-57
introduction . . . . . . . . . . . . . . . . . . . . . . .1
understanding sound field . . . . . . . . . . . .2
installation tips . . . . . . . . . . . . . . . . . . . . .3
basic system guidelines . . . . . . . . . . . . . .4
accessories included with system . . . . . .5-6
920SR column speaker features . . . .7-10
921T body-worn transmitter features . .11-12
922T handheld transmitter features . . . .13
923C charging stand features . . . . . . . . .14
basic system setup
and operation . . . . . . . . . . . . . . . . . . .15-23
920SR speaker placement
and mounting . . . . . . . . . . . . . . . . . . .24-27
921T body-worn transmitter
operation . . . . . . . . . . . . . . . . . . . . . . . .28-33
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introduction
Congratulations on the purchase of your new Radium sound field system! With proper care
and use it will become one of your most valuable classroom educational tools. Students will
be able to consistently and easily understand the teacher, regardless of their location in the
classroom, or competing internal or external background noise. Teachers can speak all day
in their normal voice, and will suffer far fewer vocal problems and absenteeism.
Numerous studies show that classrooms using sound field enjoy better student comprehen-
sion, increased student participation, better grades and fewer behavioral referrals.
Read this manual carefully to become familiar with your system and to get the most out of
it’s many features and options.
1
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2
understanding sound field and its benefits
?
• distance
• noise
• echo
• vocal
fatigue
cough!
• distance
• noise
• echo
• vocal
fatigue
?
without sound field
with sound field
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3
Before you set your system up, take a good look around your room. Where are the outlets
located? Where are the computers and other electronic equipment? Where can you put your
speaker so it's easy for you to reach, but out of the way of students and main traffic areas?
Though each classroom is different, there are some general
guidelines for speaker placement:
The speaker should be at the front of the
classroom at least 6 feet/1.8 meters away
from where the teacher stands. Try to
keep it at least six feet away from
computers or other electronic equipment,
since there may be interference if placed
too closely together.
installation tips
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basic system guidelines
To help ensure that you get the most from this system, we have put together a list of sug-
gested guidelines.
Charge transmitter batteries every night. Our rechargeable Nickel Metal Hydride
batteries last approximately 12 hours between charges, but should be recharged every
night so they are ready to go in the morning. Plan on buying new NiMH batteries after
12 months of use. Alkaline batteries can also be used, and they will last approximately
15 hours. NEVER attempt to recharge alkaline batteries! This will cause damage to the
transmitter units and may invalidate product warranty.
Charge the 920SR receiver batteries every night. The column speaker rechargeable
battery lasts approximately 5- 8 hours between charges, but should be recharged every
night so it’s ready to go in the morning. For daily use, we recommend unplugging the
power supply cord, allowing the battery to power the unit. Continuous, daily operation with
the power supply cord plugged in will reduce the life of the battery significantly.
Do not coil the microphone cord. Since it also acts as your antenna, coiling or wrap-
ping the cord will affect its range and may also reduce its life.
Speak at a normal level — the system is projecting your voice for you. 4
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5
accessories included with system
2
1
67
4
8
3
911 12
5
10
or
or
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6
10 channel changer screwdriver
(330-3000-101)
6 receiver antenna
(AT0831)
4 power supply, receiver
(040-7402-106)
9 AA rechargeable NiMH batteries
(AT0807)
5 power supply, charging stand
(040-7402-107)
8 elastic belt
(AT0712)
1 column speaker receiver
(920SR)
2 body-worn transmitter
(921T)
or
handheld transmitter
(922T)
3 charging stand
(923C)
7 speaker table stand
(AT0823)
or
wall mounting bracket (set of 2)
(AT0820)
11 auxiliary input/output cable
(AT0532-05)
12 auxiliary input cable (3.5mm– dual RCA)
(300-6332-107)
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7
920SR column speaker features (top)
2 4 6 7
8 9
1
35
10 11 12
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8
1 power, low battery, and
reception status indicator
for channel A
2 power switch and volume
control for channel A
3 reception status indicator for
channel B
12 aux output jack (3.5mm, mono)
4 power switch and volume
control for channel B
8 antenna
11 aux input jack (3.5mm, mono)
7 aux output level switch
See page 42 for level setting chart
5 tone control
6 aux input volume control
9 wall mount hole
10 extra antenna hole (not used)
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9
920SR column speaker features (front and back)
13
14
15
16
17
20
18
19
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10
14 two built-in speakers
16 handle
18 power and charging indicator
19 power jack
15 internal rechargeable battery
(non-user removable)
13 speaker grille
17 main power on/off switch
20 channel selectors
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11
921T body-worn transmitter features
back
3
1
2
4
front
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12
5 microphone input (2.5mm)
6 3 position power switch
7 power and low battery indicator light
1 belt clip
2 battery compartment
3 volume control
4 channel selector
on off
standby
(mute)
top
56
7
921T body-worn transmitter features (cont’d)
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13
922T handheld microphone features
1 LED indicator light
4 battery compartment
5 channel selector key
(inside battery compartment)
2 3 position power switch
on offstandby
(mute)
4
2
5
3
1
3 channel selector
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14
923C charging stand features
2 pocket 1 charging indicator
1 power indicator
3 pocket 1 full charge indicator
4 pocket 2 charging indicator
5 pocket 2 full charge indicator
6 power switch
7 DC power socket
front
back
67
123 4 5
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attach antenna
1
Attach antenna to top of speaker
1
1
15
basic system setup and operation
Turn metal base of antenna clock-
wise until secured tightly (do not
over-tighten)
2
2
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16
NOTE: Battery operating time is 5-8 hours.
Plug power supply into
power/charging socket
Plug power supply into
wall socket
1
2
Turn speaker on
if using wall outlet
if using already charged battery
3Turn speaker on
NOTE: Light is not illuminated
during normal battery operation
turn on main power
2
1
2
3
3
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17
3charge battery
NOTE: Battery operating time is 5-8 hours.
Plug power supply into
power/charging socket
Plug power supply into wall socket
1
2
NOTE: Light is not illuminated during normal battery operation
Recharging time is 8 hours if the battery is
completely discharged and 4 to 7 hours if
battery is only partially discharged.
Continuous operation with power supply
will reduce life of battery significantly.
charge nightly after every use
Red light =charging
Flashing red/green (equal duration) = 80 -90% charged
Long flash green, short flash red = fully charged
1
2
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18
inserting batteries in body-worn transmitter
4
+
+
_
_
Switch power off
Remove battery cover
(push and slide off)
Insert two AA rechargeable
NiMH batteries
1
2
3
1
2
3
WARNING:Never recharge alkaline
batteries! Will cause damage to the unit
and may void warranty.
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