Lectrosonics VR Field (Wideband) User Manual download pdf (Page 14)

VR Field Wideband Receiver

LECTROSONICS, INC.

Note: In Frequency Diversity mode, both

transmitters must be the same type (usually the

same model). The microphones must also be

placed very close together to minimize comb

ﬁltering.

To prepare for operation in the Frequency Diversity

mode, make the following adjustments:

1. Set up the transmitters according to their instruc-

tions. Plug a set of headphones into the front panel

PHONES jack to monitor the blended output. You

can also monitor the output from the rear panel

XLR jack for either module in the pair.

2. While listening to the blended output, adjust the

gain control on one of the transmitters so that the

audio loudness drops way down (nulls) as the two

channels cancel each other. If the output does not

null, then reset the transmitter input gain control

back to where it was and press the Function button

on the front panel next to the word INVT on the

LCD. This will invert the phase of the audio on the

second module so it will null properly.

INVT shown in Off Position

Depending on how microphones are wired and

other vagaries, either position of the INVT toggle

switch might achieve the null. Keep toggling the

switch until the null is found, adjust the level for the

deepest null. Be sure to press INVT one more

time to put the audio from the two channels

back in phase for normal operation.

Selecting the Tuning Mode

Pre-coordinated tuning groups are stored in memory to

simplify frequency coordination. The groups are labeled

GROUP a, b, c and d on the LCD, with eight frequen-

cies stored in each one. Refer to the section near the

back of this manual entitled Pre-coordinated Frequen-

cies for details on compatibility and using these groups.

Select a

through d

Three additional modes are also available to enable

compatibility with non-standard transmitters and storing

custom frequency sets. Navigate to the Tuning menu

and press the MENU/SELECT control.

NORMAL MODE is the standard Lectrosonics mode

with 256 frequencies in 100 kHz steps. A unique pilot

tone is present for each frequency.

FINE MODE allows tuning to 1024 frequencies in

25 kHz steps for compatibility with older and non-

Lectrosonics transmitters. Pilot tone frequency is set to

the next lower even 100kHz frequency. For example,

650.000, 650.025, 650.050 and 650.075 all use the

same pilot tone frequency.

CUSTOM MODE is a special mode used to store up to

50 frequencies per block in 25 kHz steps. Frequencies

are stored in memory in a “table” with positions num-

bered 0 through 49. The pilot tone frequency is deﬁned

by the position of each frequency in the table.

The Receiver Detail window will indicate the selected

mode and frequency information. In the FINE mode

transmitter switch settings will be shown when the

frequency is on an even 100 kHz step. In the CUSTOM

mode the position of the frequency in the table of 50

stored in memory will be shown.

FINE mode on

100kHz step;

Tx switch

settings shown

FINE mode NOT

100kHz step;

Tx switch

settings not

shown

CUSTOM mode;

memory

position shown

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 31 32

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Lectrosonics VR Field (Wideband) User Manual Page 14

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