User's Manual

HMa
LECTROSONICS, INC.
8
Operating Instructions
AUDIO
Button
FREQ
Button
Modulation 
LEDs
PWR LED
UP Arrow
DOWN Arrow
Power Up and Boot Sequence
1)  Ensure that good batteries are installed in the unit.
2)  Simultaneously press and hold the AUDIO and 
FREQ buttons. Continue holding the buttons until 
On and the characters 1, 2, 3 have appeared. The 
boot sequence will then initiate.
Initial Power On
Timer Screen
As the unit turns on, the 
Modulation LEDs and PWR 
LED all glow red, then green, 
and then they revert to normal 
operation.
  The LCD displays a bootup sequence which con-
sists of five screens:
Category: Example
Company Name: Lectro
Frequency Band (XX) and 
Firmware Version (rX.XX):
A1 r1.00 
Compatibility Mode: CP 400 
RF Power Output: 100 
Operating Frequency 482.875 
Power Down
  Simultaneously press and hold the AUDIO and 
FREQ buttons. Continue holding the buttons until 
OFF and the countdown characters 3, 2, 1 have ap-
peared. The unit will then power down.
Initial Power Off
Timer Screen
If the AUDIO and FREQ 
buttons are released before 
the LCD goes blank at the end 
of the countdown, the unit will 
not turn off. Instead, it will stay 
on and the LCD will return to the previous screen.
NOTE: If batteries are removed or reach the end 
of life while the unit is turned on, the unit will turn 
back on with a brief, simultaneous press of the 
AUDIO and FREQ buttons. The counting sequence 
will not be displayed in this instance.
Automatic Power Restore
The firmware will remember the power on/off state 
and the settings when batteries reach their end of life 
or are removed. When fresh batteries are installed, 
the unit will reboot and return to the previous set-
tings without the need to press any buttons. This only 
works when the unit is fully on and transmitting. It 
does not work in the Standby Mode.
Standby Mode
Standby Screen
Standby Mode allows you to 
verify or change the trans-
mitter’s operating frequency 
or audio input level without 
transmitting a signal. Quickly press and release both 
the AUDIO and FREQ buttons simultaneously to enter 
and exit this mode. The characters rF OFF will appear 
on the LCD while the unit is in the standby mode.
UP Button Menu
Hold the UP button while powering up the unit.
Hold
Then press both
Then press the AUDIO button repeatedly to scroll 
through the settings. Use the UP and DOWN arrow to 
select the available options under each setting.
Compatibility Mode Screen (Up Button Menu)
CP (Compatibility Mode); 
press the UP and DOWN 
arrows to select one of the 
following:
Note: RF transmission is prevented while 
selecting Compatibility Modes. Also, the HMa 
exits this screen to the Standby Mode.
•  Nu Hybrid - Digital Hybrid receivers
•  3 - (Mode 3) For non-Lectrosonics analog receiv-
ers. Contact the the factory for details.
•  IFB - For Lectrosonics IFB receivers.
While in the compatibility mode screen, pressing 
either the AUDIO or FREQ button exits to standby 
mode. To power off from the compatibility mode 
screen, press and hold AUDIO and FREQ together.
NOTE: If your Lectrosonics receiver does not 
have Nu Hybrid mode, use Euro Digital Hybrid 
Wireless® (EU Dig. Hybrid).










