Using Smarttune; Configuring User Groups; And The Scan Function - Lectrosonics R400A Instruction Manual

R400A

Using SmartTune

Scan Function
The SmartTune feature automatically scans the
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receiver's tuning range and tunes to the frequency with
the least RF interference. The transmitter can then be
tuned to match the receiver. If only one wireless chan-
nel is to be used, this simple one-step tuning is all that
is required.
In the event that multiple wireless channels are to be
used at the same location, it is still possible to use
the SmartTune™ feature as a tuning aid, but it will be
necessary to check for intermodulation interference.
It is possible, for example, that the second transmit-
ter, combined with another signal in the environment,
could generate an intermodulation product that inter-
feres with the first receiver. That interference would not
have been present on the first channel until the second
channel was powered up.
The basic procedure to test for intermodulation inter-
ference is as follows.
1. Start with all transmitters off.
2. For each channel, use SmartTune
clear frequency. Tune the corresponding trans-
mitter and leave it on, placing it as close to the
receivers as it will be in actual use.
3. o check for intermodulation problems, turn each
transmitter off briefly in turn, making sure that
the corresponding receiver's RF meter shows
little or no interference while its transmitter is off.
For each trial, all transmitters must be on except
the one being checked.
4. In the event that an intermodulation problem is
detected, use SmartTune
receiver and transmitter, and then repeat step 3.
It will be necessary to redo all the trials in step 3,
as the newly tuned transmitter may cause new
intermodulation problems that did not exist dur-
ing earlier trials.

Configuring User Groups

For users who do their own frequency coordination,
the R400A offers two user-configurable frequency
groups. Up to 16 frequencies can be stored in a user
group. Use the following procedure to add or remove
frequencies from either user group (User Group U or
User Group V).
Adding User Group Frequencies
1. From the Tuning setup screen, select one of the
user group tuning modes (Group U or Group V).
2. Go to the Freq setup screen.
3. Rotate the MENU knob to navigate among the
frequencies in the group. If the group is currently
empty, rotating the knob will have no effect. Simi-
larly, if the group has only a single entry, rotating
16
and the
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to choose a
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to retune the affected
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the knob will move to that frequency but have no
subsequent effect.
Note: An exclamation mark in the lower right
corner indicates that the current frequency is not
in the current group. If it persists when the knob is
rotated that is only because the group is empty.
4. To add a frequency to the group, it is first neces-
sary to be able to tune to it. Double-click (rapidly
press twice) the MENU knob to gain access to
all frequencies.
5. Rotate the knob to the desired frequency. Add
the frequency to the group by holding down the
PREV MENU button while pressing the MENU
knob. A triangle will appear to the left of the
frequency, indicating that it is a member of the
group.
6. In a similar manner, rotate the knob to navigate
to any frequencies you wish to add, then add
them by holding down the PREV MENU button
while pressing the MENU knob. If you acciden-
tally add a wrong frequency, it can be removed
the same way it was added, by holding down the
PREV MENU button while pressing the MENU
knob.
7. Once you are finished added frequencies, press
the MENU button once to return to normal group
tuning.
Deleting User Group Frequencies
1. From the Tuning setup screen, select one of the
user group tuning modes (group U or group V).
2. Go to the Freq setup screen.
3. Rotate the MENU knob to navigate among the
frequencies in the group, stopping on the one
you wish to delete.
4. Delete the frequency by holding down the PREV
MENU button while pressing the MENU knob.
The arrow symbol in the lower right corner will
change to an exclamation mark, indicating that
the currently tuned frequency is no longer a
member of the current group.
5. Continue in a like manner, repeating steps 3 and
4 until you have deleted all the frequencies you
wish to remove from the group.
Call Lectrosonics
Lectrosonics uses a proprietary computer program to
perform thousands of calculations and identify vari-
ous interfering signals. Potential problems and trouble
areas can be identified in advance, and proposed new
frequencies or other solutions can be suggested. This
service is offered to authorized Lectrosonics dealers
and other customers who are using Lectrosonics
wireless microphone and wireless IFB systems.
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LECTROSONICS, INC.