About Overlapping Frequency Blocks; Selecting Audio Polarity (Phase); Adjusting Lcd Backlight; Rf On/Off On The Menu - Lectrosonics LMb Instruction Manual

About Overlapping Frequency Blocks

When two frequency blocks overlap, it is possible to
select the same frequency at the upper end of one and
the lower end of the other. While the frequency will be
the same, the pilot tones will be different, as indicated
by the hex codes that appear.
In the following examples, the frequency is set to
494.500 MHz, but one is in block 470 and the other in
block 19. This is done intentionally to maintain compat-
ibility with receivers that tune across a single block. The
block number and hex code must match the receiver to
enable the correct pilot tone.
Freq. Freq.
b 19
51
494.500

Selecting Audio Polarity (Phase)

Audio polarity can be inverted at the transmitter so the
audio can be mixed with other microphones without
comb filtering. The polarity can also be inverted at the
receiver outputs.
Compat Phase
StepSiz
Phase
Locked

Adjusting LCD Backlight

For viewing the LCD in dimly lit conditions, the backlight
can be turned on continuously or set to turn off auto-
matically after either 30 seconds or 5 minutes.
Phase Backlit
Locked
Backlit
Rf On?

RF ON/OFF on the Menu

The RF output of the transmitter can be turned off and
on with a menu item on the LCD to switch from the
standby mode to the operating mode.
Backlit Rf On?
Rf On?
BatType
Default
Rio Rancho, NM
Make sure the
b470
block number
and hex code
F4
match the
receiver setting
494.500
Pos.
Neg.
On
30 sec
5 min
No
Yes
Digital Hybrid Wireless Belt-Pack Transmitter

Selecting Battery Type

The voltage drop over the life of different batteries var-
ies by type and brand. Be sure to set the correct battery
type for accurate indications and warnings. The menu
offers alkaline or lithium types.
Backlit BatType
Rf On?
BatType
Default
If you are using rechargeable batteries, it is better to
use the timer function on the receiver to monitor the
battery life rather than the indicators on the transmitter.
Rechargeable batteries maintain a fairly constant volt-
age across the operating time on each charge and stop
working abruptly, so you will have little or no warning as
they reach the end of operation. The timer is available
on all Lectrosonics Digital Hybrid Wireless

Restoring Default Settings

This is used to restore the factory settings.
Backlit Default
Rf On? settings
BatType
Default

IR (infrared) Sync

The opening on the side panel is an IR port for quick
setup using a receiver with this capability. The transfer
is initiated with a switch on the receiver.
IR Port
FCCID:DBZLMBC1
Lectrosonics, Inc.
Made in U.S.A.
The receiver can transfer the settings for Frequency,
Step Size and Compatibility mode to the transmitter
via the IR ports. When the settings are successfully
transferred, OK will appear on the transmitter LCD. If a
mismatch exists, an error message will appear on the
transmitter LCD indicating the nature of the problem.
IR Sync IR Sync
OK
Mismatch
Alk.
Lith.
receivers.
®
No
Yes
614.4 - 691.1 MHz
S/N XXXXX
Model: LMBC1
IC: 8024A-LMBC1
IR Sync
COMPAT
BLOCK
Mismatch
11