Lectrosonics UM400 - Manual (Page 10)

UM400
Battery Installation Operating Instructions
The transmitter is powered by a standard alkaline or lithium
9 Volt battery. It is important that you use ONLY an ALKA­
LINE or LITHIUM battery for longest life. Standard zinc-
carbon batteries marked “heavy-duty” or “long-lasting”
are not adequate. Ni-cad rechargeable batteries will only
provide 1.5 hours of operation, or less, and will run down
quite abruptly. Alkaline batteries provide over 5 hours of
operation. Lithium batteries can be used to provide up
to 16 hours. Care should be taken not to leave a fully
discharged lithium battery in the transmitter, as swelling of
the battery can make it difficult to remove from the com­
partment. The battery status circuitry is designed for the
voltage drop over the life of alkaline batteries.
To open the battery compartment, press outward on the
cover door in the direction of the arrow as shown in the
drawing. Only firm, sliding pressure is needed to open
and close the battery door. Swing the door open and take
note of the polarity marked inside showing the location of
the positive (+) and negative (-) terminals.
You can see the large and small contact holes inside the
battery compartment with the door open.
Insert the battery correctly and close the cover by press­
ing the door closed and across, reversing the opening
procedure illustrated above. If the battery is inserted
incorrectly, the door will not close. Do not force the door
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 Series analog and
some non-Lectrosonics analog wireless receivers (con­
tact 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) Power up the unit 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:
• To set Lectrosonics 100 Series mode:
set switches to 1,1
• To set Lectrosonics 200 Series mode:
set switches to 2,2
• To set mode 3: set switches to 3,3
(contact the factory for details)
• To set Lectro 400 Series mode:
set switches to 4,4
• To set IFB mode: set switches to 5,5*
• To set Mode 6: set switches to 6,6
6) Turn the unit on, wait a couple of seconds and turn
off again.
7) Change the Frequency Select Switches to 0,0.
8) Turn on the transmitter 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 –20 and –10 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
At power up, the transmitter will confirm the current
compatibility mode with the number of blinks listed
here. This setting will remain the same until you
reset it with the procedure listed above.
*Not available on earlier units.
LECTROSONICS, INC. 10