Lectrosonics VRFIELD (Narrowband) User Manual download pdf (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

™

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

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Lectrosonics VRFIELD (Narrowband) User Manual Page 11

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