UMC16B
LECTROSONICS, INC.
4
RF OUT
12V DC IN
400MA MAX
RF OUT
UMC16B Front Panel
UMC16B Rear Panel
Antenna Power Jumpers
NOTE: These jumpers are
ONLY
to be used when
the Lectrosonics UFM50 or UFM230 filter/amp
modules are being powered from DC on the
antenna input jacks on the UMC16B multicoupler.
For long cable runs between the UMC16B and remote
antennas, gain must be applied at the antenna end of
the coaxial cable to compensate for the loss that oc-
curs over the length of the cable run. The Lectrosonics
UFM230 or UFM50 filter/amp module can be placed in
an optimum position close to the antenna and powered
by DC from the UMC16B via the coaxial cable. This
applies the gain before the loss in the coaxial cable run
to maximize the signal to noise ratio. Jumpers at the
antenna inputs on the UMC16B enable the DC power
on the BNC jacks.
1. To enable the DC antenna power, unplug the power
cord and place the UMC16B so that the front panel
faces away from you. Remove the cover
(12 screws).
2. Locate the jumpers on the circuit board (see illustra-
tion below). The power is applied to the BNC jack when
the jumper is connected to both pins. To disable the
power, remove it from both pins and replace it so that
one end fits one of the pins and the other end of the
jumper hangs freely.
Antenna A input
50 ohm BNC
Antenna B input
50 ohm BNC
RF outputs x 8
50 ohm BNC
RF outputs x 8
50 ohm BNC
DC power input
12 to 18 VDC
Long coaxial
cable run
Long coaxial
cable run
NOTE: If a splitter/combiner is used between the
UFM230 and the UMC16B, it will not pass the DC
power to the antennas.
UMC16B Multicoupler
Antennas
UFM230
UFM230
