Lectrosonics ISO9VOLT Instruction manual

The ISO9VOLTH kit includes a
modified battery door that fits
any Lectrosonics UH type
plug-on transmitters.
ISO9VOLT
Battery Eliminator for UM & UH Series Transmitters
TECHNICAL DATA
Rio Rancho, NM, USA
www.lectrosonics.com
• Allows external powering of Lectrosonics
aluminum transmitters
• Standard 9 volt battery contacts and DC input
jack on “dummy battery”
• Modified battery doors available for both Belt-
Pack and Plug-On transmitters with flip-open
style battery doors
• Preserves use with regular alkaline or lithium
batteries
The ISO9VOLT battery eliminator allows Lectrosonics
wireless transmitters with hinged battery doors designed
for 9 volt batteries to be operated from external power
sources. 10 to 18 volt DC is converted to regulated 9 volt
DC to power the transmitter at the battery terminals inside
the battery compartment. The modified door exposes the
connector for the external power source yet still operates
with regular dry cell batteries. The unit can supply up to
200 mA to work with the 250 mW transmitters. It is fused
and protected from reverse polarity.
The unique design isolates the power ground from the
audio ground in the transmitter allowing the unit to be
used in “bag systems” common in field production. When
the mixer, receivers and wireless transmitters in a bag
are powered by a common battery, a ground loop is often
created which can cause high frequency noise (whining
or hiss) in the audio. The output of a DC/DC converter in
the ISO9VOLT is passed through a transformer, rectified
and then controlled by a regulator to produce the final DC
power presented on the battery contacts.
The ISO9VOLTM model is a kit including the battery eliminator
and a modified battery door that fits any Lectrosonics UM type
belt-pack transmitter with a hinged type door as shown here.
“M” Kit:
Modified door for Belt-Pack
“UM” transmitters
“H” Kit:
Modified door for
Plug-On “UH”
transmitters
The battery eliminator is not recommended for use with
any devices other than the Lectrosonics transmitter types
shown here. Use with any other device will void the fac-
tory warranty. Lectrosonics will not accept responsibility
for damage to nor ensure proper operation with any other
devices.
NOT FOR USE WITH TRANSMITTERS THAT
HAVE ROTATING TYPE BATTERY DOORS.

Caution: When removing a standard door to
replace with a modified door, proceed carefully as
the metal spring and tabs can easily be bent with
too much force.
Step 1:
Remove rear screw
on bottom of case.
“H” KIT INSTRUCTIONS “M” KIT INSTRUCTIONS
Note: Depending on date of manufacture,
frequency adjustable models may or may not have
a sliding door and bezel on this side. The screw is
in the same location on both versions.
Step 2:
Open battery door and locate the screw that holds the
spring to the case bottom. Loosen the screw several
turns but do not remove it.
Step 1:
Remove the four screws noted below and lift bezel from
control panel.
Step 3:
Insert the ISO9VOLT. The unit should look like the photo
below.
Close the door and press
down on it so it snaps
into place and is
flush with the
bezel.
Step 2:
Remove battery door and place modified battery door in
exactly the same position. Make sure modified battery
door is oriented the same way as standard door.
Place the bezel on top of the
modified door and care-
fully tighten the four
screws.

Step 4:
Grip modified door (has hole in it) with thumb and forefin-
ger and gently slide door hinge into place. Be careful not
to bend the spring or force the hinge. Make sure the hinge
of the modified door fits behind the two little metal tabs
(see inset). It will fit into place without much effort.
Step 3:
Place unit in a comfortable position while holding the
bezel slightly away from the casing. Grip door with thumb
and forefinger and gently slide it away from and out of the
bezel. If the door does not slide out easily, pry the bezel
out slightly with your fingernail.
Step 5:
Install the ISO9VOLT as shown so that the battery termi-
nals match the contacts in the transmitter. The battery
contact polarity is different on different models —
connector will align with access hole in either orientation.
Metal tabs on spring
Bezel
Re-align all parts before tightening screws. Tighten screw
holding spring to the case bottom that was loosened in
Step 2.
Replace and tighten screw on bottom of case that was
removed in Step 1.

November 10, 2006
581 Laser Road NE • Rio Rancho, NM 87124 USA • www.lectrosonics.com
[phone] • [phone] • fax [phone] • [e-mail]
Specifications
Input:
Minimum: 10.5 VDC
Maximum: 18 VDC
Connector: DC sleeve type
Output:
Voltage: 9 VDC regulated
Power: 200 mA maximum
Size and Weight:
Height: .67 in. (17 mm)
Width: .99 in. (25 mm)
Length: 1.76 in. (45 mm) housing only
1.91 in. (49 mm) including battery
contacts)
Weight: .6 ozs. (16.4 grams)
This device complies with Part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) This device may
not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause
undesired operation.
Mating Plug Dimensions and Polarity