User's Manual

DHu
LECTROSONICS, INC.
8
, DHu/E01
Gain
This setting is very important since it can have a sig-
nificant effect on the signal to noise ratio the system
will deliver. The gain adjustment can even affect the
operating range of the wireless system. Gain must be
set according to the individual voice, the mic capsule
in use and the handling technique of the user. LEDs in
the control panel facilitate accurate gain adjustment.
Gain
Freq.
ProgSw
Rolloff
-40
-20
0
Gain
25
IMPORTANT: See the section Input Gain
Adjustment on page 9 for details.
Freq.
The operating frequency is normally determined using
the scanning function in the receiver or with coordina-
tion software. The frequency is shown on the transmit-
ter LCD display in MHz and with a hexadecimal code
that is used on most Lectrosonics receivers.
Frequency groups are also able to be received via IR
(Inrared) port sync. The group options are set by the
receiver, and will show at the bottom of the screen as
No Grp, Grp x, Grp w, Grp v, or Grp u.
Use the MENU/SEL button to toggle between options
and UP and DOWN arrows to adjust.
Freq
Grp x
628.200
Gain
Freq.
ProgSw
Rolloff
Frequency
Group
Frequency
ProgSw
The Programmable Switch on the housing can be set
to provide several functions, or it can be bypassed.
NOTE: See section on Programmable Switch
Functions.
Functions:
(none)
Mute
Power
TalkBk
Cough
PTT
Gain
Freq.
ProgSw
Rolloff
Rolloff
A low frequency roll-off filter can be set for a -3dB point
at 25, 35, 50, 70, 100, 120 or 150 Hz. Roll-off slopes
are 12.2 dB/octave at 35 Hz and 10.1 dB/octave at 70
Hz through 125 Hz.
Gain
Freq.
ProgSw
Rolloff
Rolloff
70 Hz
The roll-off frequency is normally adjusted by ear to
suit personal preferences.
Phase
The phase (polarity) of the audio can be inverted to
match other microphone capsules as needed.
Freq.
ProgSw
Rolloff
Phase
Phase
Normal
Invert
BatType
Selects the type of batteries being used; alkaline or
lithium.
Phase
BatType
TxPow er
Default
BatType
Alk.
Lith.
TxPower
Output power can be set to 100 mW to extend operat-
ing range (which can also suppress noise and drop-
outs to some extent) or set to 50 mW to slightly extend
the operating life of the batteries.
BatType
TxPow er
Default
KeyType
TxPower
25 mW
50 mW