Multi-Channel Wireless System
Front Panel
RF Signal Distribution
Antenna distribution is provided by the master and
slave RF distribution modules with standard 50 Ohm
BNC jacks and coaxial leads on the front panel. Whip
antennas can be mounted directly onto the modules,
however, optimum performance is usually achieved
using external, remote antennas with low loss coaxial
cable.
The output of each module is routed to the six receiv-
ers with coaxial cable in the pattern shown in the
diagram, with each receiver having one lead from each
module to provide diversity reception.
Powering Options
Switch - The switch on the front
panel of the SIXPACK module
controls the powering options:
In the EXT (upper) position,
the unit will operate only from
external power supplied to pins
1 and 4 of the rear panel 4-pin
XLR connector.
In the OFF position, all power to
the receivers and distribution modules is disconnected,
however, the internal batteries in the SIXPACK can still
be charged with the CH80 charger connected to the
rear panel 4-pin XLR.
OFF
EXT
UHF RF/POWER
DISTRIBUTION
EXT
OR
BAT
UDM 230
In the EXT OR BATT (lowest) position, the system is
activated and power will be drawn from either the gel-
cell batteries located in the bottom of the SIXPACK, or
from an external 12 VDC power source if one is con-
nected to the rear panel 4-pin XLR jack. In this mode,
the internal batteries act as a backup of the external
power source. If the voltage from the external power
source drops to a level too low for operation, a built-in
automatic relay will switch the external power off and
the internal gel-cell batteries on.
EXT LED - Lights when external DC
power is present at the rear panel
4-pin XLR connector.
BAT LED - Indicates operation from
the internal gel-cell batteries.
CHARGE LED - Lights when the
gel-cell batteries are being charged
with the CH80 charger. It will dim
as the batteries become charged
and then go out when the batteries
achieve full charge.
AC LED - Indicates the unit is
plugged into AC with the CH80
charger. It remains on as long as the
charger is connected, regardless of
the battery charge state.
EXT
OFF
EXT
CHARGE
AC
ANTENNA
LECTROSONICS
UHF RF/POWER
DISTRIBUTION
EXT
OR
BAT
UDM 230
EXT
OFF
EXT
CHARGE
AC
ANTENNA
LECTROSONICS
UHF RF/POWER
DISTRIBUTION
EXT
OR
BAT
UDM 230
ANTENNA
POWER
LECTROSONICS
UHF RF
DISTRIBUTION
UDMS230
Figure 2 - Front Panel
Rio Rancho, NM
5
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