Frequency Synthesized UHF Belt-Pack Transmitter
Rio Rancho, NM
1
SHIELD
TIP
PIN
5
4
3
2
1
SLEEVE
LINE LEVEL
RCA or 1/4” PLUG
A UDI O
1
2
3
4
5
T A5 F
PLUG
(This configuration handles input signal levels up to 3 V or
12 dBu before limiting and is fully compatible with other Lectrosonics
transmitters such as the LM or UM series. A 20 k resistor can be inserted
in series with pin 5 for additional 20 dB attenuation (30 V or +32 dBu).)
Compatible Standard Unbalanced Line Level Wiring
DRAIN (BIAS)
SOURCE (AUDIO)
SHIELD
Compatible with Servo Inputs and other Lectrosonics Transmitters:
Works with Servo Inputs Only:
Wiring Hookups for Different Sources
In addition to the wiring hookups illustrated below, Lec-
trosonics makes a number of cables and adapters for
other situations such as connecting musical instruments
(guitars, bass guitars, etc.) to the transmitter. These
cables can be found in our UHF or Accessories cata-
logs. Visit www.lectrosonics.com, or contact the factory
for more information.
A new “servo” input circuit is used on the UM400a and
other models such as the SM Series where pin 4 is
now a voltage selector pin. The diagrams in the section
labeled “Works with Servo Inputs only” are specific to
the UM400a transmitter and make wiring a Countryman
B6 or E6 or a three wire microphone such as a COS-11
very quick and easy. However, these wirings will not work
with older Lectrosonics transmitters such as the UM400,
UM200, etc. If you need the two wire Countryman B6 or
any three wire mic to work with both older transmitters
as well as with the Servo input go to the section below,
labeled, “Compatible with Servo Input and other Lectro-
sonics Transmitters.”
Sanken Cos-11 microphones, the Lectrosonics M150
and other three wire microphones to be used with the
Servo input will require new wiring. If the wiring is not
changed, they will have much higher output than usual
and extra distortion at high levels. The reason is that the
source follower wiring used in the older models is not
compatible with the virtual ground in the Servo input. In
the “Compatible with Servo Input and other Lectroson-
ics Transmitters” section shows a compatible wiring
that will work with all 5-Pin Lectrosonics transmitters.
This wiring converts the three wire microphone to a two
wire system without changing the audio quality. (The
microphone polarity will be reversed so you may want to
enable the phase switch on the Lectrosonics receiver.)
This wiring is electrically equivalent to the easy wiring in
the “Works with Servo Input only” section.
All two wire mics (except the Countryman B6 and E6)
such as the MKE-2 and the Lectrosonics M152 will
work with the Servo input with no changes. The two
wire setup is also shown in the third diagram below.
