Divmode Setup Screen; Smartdiversity; Optiblend - Lectronics VR Field Reference Manual

VR Field Receiver
Note: To get to the Receiver Detail Screen for a
receiver module, press BACK until the Overview
screen appears, then select the receiver module
by pressing its Receiver Select button. If the
Group Tuning Mode indicator is blinking, then
currently tuned frequency is not in the group. If
the Group Tuning Mode indicator is steady, then
the current frequency is in the group. If the Group
Tuning Mode indicator is absent, or displays as "a",
"b", "c", or "d", then the receiver module is not set
to on of the User Programmable Tuning Modes.
2. Hold the Function Key and rotate the MENU/SE-
LECT control to any of the 256 frequencies in the
block. Whenever the selection comes to rest on a
frequency that is in the current group, the Group
Tuning Mode indicator (letter "u" or "v") will give a
steady indication. On frequencies that are not in
the group, the indicator will blink.
3. To add or remove the displayed frequency from the
group, hold the Function button while pressing hte
MENU/SELECT control. The Group Tuning Mode
indicator will stop blinking to show that the frequen-
cy has been added to the group, or begin blinking to
indicate that the frequency has been removed from
the group.

DivMode Setup Screen

The VR Field System offers three different Diver-
sity modes of operation: SmartDiversity

OptiBlend

(ratio diversity) and Frequency Diversity.
™
Regardless of which diversity mode is selected, re-
ceiver modules are always paired using the following
combinations: 1-2, 3-4 and 5-6. However, in switched
diversity operation, the individual receiver modules
operate independently with each module having its own
set of controls and indicators.
In ratio diversity and frequency diversity modes, the
paired receiver modules act as a set. Pressing the
Receiver Select button for one member of the pair has
the effect of selecting or operating on both receiver
modules in the pair.
Frequency diversity adds another facet in that it uses
two transmitters requiring the transmitter outputs to be
balanced in order for this mode to function correctly.
(The figure below shows Receiver Modules 5 and 6 set
for Frequency Diversity Mode.)

SmartDiversity

™
Receiver Module Pair
1
The VRM is designed to route both antenna inputs to
each receiver module. SmartDiversity is a microproces-
sor controlled antenna phase switching process which
switches phase angle between the antenna inputs by 0
or 180 degrees depending on relative RF. The goal is to
minimize dropouts caused by multi-path reflections.
Since each receiver actually acts independently in this
mode, SmartDiversity allows diversity reception of up to
six independent channels.
(switched),
™
OptiBlend
OptiBlend
the audio output from two adjacent receiver modules
(1-2, 3-4 or 5-6) relative to the RF signal input levels
at both receivers. The Overview Screen displays the
paired receivers with the relative RF input for each
receiver and a single (combined) audio output. While
two independent RF channels are displayed on the
Overview Screen, all other setup parameters are the
same for both receivers. From the Overview Screen,
pressing a Receiver Select button for either member of
the diversity pair displays the Receiver Detail Screen for
Diversity.Mode
Diversity Mode Antenna Phase Angle
™
is a ratio diversity method which combines
™
Combined.Audio
Receiver.Module.Pair
Separate.RF
Separate.RF
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