Lectrosonics VRFIELD (Narrowband) - Manual (Page 11)

Digital Hybrid Wireless™ Modular Receiver System
Using Scan to Find Clear Frequencies
In crowded RF environments, it may not be possible to
find enough clear channels using a Tuning Group. The
internal spectrum scanner can be used to find clear
channels. The Scan Function automatically selects two
receivers (on from each frequency block) for spectrum
scanning purposes.
1. Ensure all associated transmitters are turned off
and all receivers are set to NORMAL tuning mode.
2. Use the MENU/SELECT control to Scan and press
the knob. Scanning begins with the results shown
in a condensed area of the LCD for each frequency
block. Allow the scanner to make several passes,
then press the Function button (upper button left of
the LCD) to enter the “Stop Mode.”
Transmitter.Frequency
Select.Switch.Setting
3. Press the Function button again to Zoom in and
observe the area in greater detail.
4. Select a receiver with its button beneath the LCD,
then rotate the MENU/SELECT control while watch­
ing the cursor. Stop in areas of no or minimal RF
interference (no signal on display). Jot down the two
character frequency switch setting. The selected
receiver will be set to this frequency automatically.
5. Select another receiver and again rotate the MENU/
SELECT control to find another clear frequency.
Be sure to keep the selected frequencies as far
apart as possible (at least 400 kHz). Continue this
process for the other receivers and jot down the two
character switch settings as you proceed.
6. Before turning on the transmitters, continue with the
setup instructions on the following pages. Then
Set Diversity Modes
The VR Field System offers three different Diver­
sity modes of operation: SmartDiversity ™ (switched),
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. (See SmartDiversity ™ in
VR Field Reference Manual.)
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. (See OptiBlend ™ and Frequency
Diversity in VR Field Reference Manual.)
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.
(See Frequency Diversity Mode Audio Balancing.)
SmartDiversity (Antenna Phase Switching) Setup
1. To set a receiver module pair for SmartDiversity ™
operation, navigate to the DivMode Setup Screen.
2. Press the front panel Receiver Select Button
for one of the receiver modules in the pair and
then rotate the MENU/SELECT control to display
“Switched.” The Receiver Module boxes on the
screen bottom will display “SWI” for both the se­
lected receiver an its compliment. (In the example,
Receiver Select button 5 or 6 was pressed.)
3. Repeat steps 2 and 3 for the remaining receiver
module pairs to be set to switched diversity opera­
tion.
Rio Rancho, NM 11