Lectrosonics LM - Manual (Page 8)

LM/IM
Operating Instructions
Selecting the Compatibility Mode
All units with serial number 601 and up are capable of
working with Lectrosonics 400 Series Digital Hybrid
Wireless
™ , 200 Series analog, 100 Sseries analog and
some non-Lectrosonics analog wireless receivers
(contact the factory for details). The transmitter must be
set to the operating mode of the matching receiver,
which is easily done using only the supplied screwdriver
and a battery.
NOTE: The unit is supplied from the factory as a
400 series transmitter.
1) Ensure the battery is good.
2) Turn OFF the transmitter.
3) With a small screwdriver (one is included with your
unit), set the Frequency Select Switches to CC. (for
Change, Change).
4) Toggle the power switch ON briefly – just long
enough for the LED’s to light up and then turn it OFF.
5) Change the Frequency Select Switches to one of
the following settings:
• 100 Series mode: 1,1
• 200 Series mode: 2,2
• Mode 3: 3,3
• 400 Series mode: 4,4
• IFB Series mode: 5,5
• Mode 6: 6,6
6) Toggle the power switch ON, then OFF again.
7) Change the Frequency Select Switches to 0,0.
8) Turn the transmitter ON to complete the operation.
The LEDS will blink to indicate the selected com­
patibility mode. Immediately after power up, all
LEDS will blink together red, then green, followed
by the audio level LEDs (-20 and -10) blinking to
indicate the mode.
The LEDs will blink:
• Once for 100 Series mode
• Two times for 200 Series mode
• Three times for some other receivers
• Four times for 400 Series mode
• Five times for IFB mode*
• Six times for Mode 6
Note: Each time the transmitter is turned on, the
Power LED will confirm the current operating
mode with the number of blinks listed in Step 2.
The mode setting will not change until it is reset
with the procedure listed above.
Attention: During the procedure to set the
compatibility mode, each step between toggles
of the power switch must be performed within
ten seconds, or the procedure must be started
from the beginning.
Frequency Select Switch Settings (C,C)
1.6M 100K
0 1
2
3
4
5
6
7 8 9
A
B
C
D
E
F 0 1
2
3
4
5
6
7 8 9
A
B
C
D
E
F
Attaching a Microphone or Musical
Instrument and Adjusting Audio Levels
The front panel Modulation LEDs indicate input level
and limiter activity. (See Modulation LED Signal Level
Chart.) Since the distortion introduced by the limiter is
minimal and full modulation is assured, occassional
brief forays into the red by the -20 LED is acceptable.
Different voices, or instruments, will usually require
different settings of the AUDIO LEVEL control, so check
this adjustment as each new person uses the system.
If several different people will be using the transmitter
and there is not time to make the adjustment for each
individual, adjust it for the loudest voice.
Musicians also vary their volume depending on the
nature of the music. It is suggested that the transmitter
be adjusted for the passage with the loudest volume.
1) If necessary, install a fresh battery.
2) Insert the 5-pin into the MIC input jack. Ensure the
pins are aligned and the connector locks in (it will
click).
For those using a musical instrument, insert the 1/4
inch plug on the other end of the MI33A Instrument
Cable into the appropriate jack on your your musi­
cal instrument.
3) Mute the main sound system and rotate the AUDIO
LEVEL control on the transmitter to maximum
counterclockwise (Off).
Modulation LED Signal Level Chart
Signal Level -20 LED -10 LED
Less than -20 dB Off Off
-20 dB to -10 dB Green Off
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 dB Red Red
LECTROSONICS, INC. 8