Logic Connection Specifications - Shure UC User Manual

ENGLISH

LOGIC CONNECTION SPECIFICATIONS

The logic capability of the UC4 receiver provides two functions: transmitter status indication (which can be used to
signal and control other events) and transmitter low battery indication. The various logic functions and their applica-
tions are presented in the following table. Refer to Figure 28 below for pin mapping.
Pin No. Function
1 Signals or controls
other events.
2 Logic Ground*
3 Remote indication of
transmitter battery
status.
*Logic ground is distinct from UC4 audio ground.
SCM810 MIXER DB 25 LOGIC CONNECTOR
GATE 1 GATE 3
MUTE 1 MUTE 3
OVERRIDE 2
MUTE 2
GATE 2
OVERRIDE 1 OVERRIDE 3
TYPICAL UC4 CONNECTIONS TO SCM810 MIXER LOGIC CONNECTOR
NOTE: For more information on logic functions, please contact the Shure Applications Department.
Transmitter Status
On
Off
––
Good Battery (1–8 hours of
battery life remaining)
Low Battery (1 hour of less
of battery life remaining)
GATE 5 GATE 7
MUTE 5 MUTE 7
OVERRIDE 4 OVERRIDE 6 OVERRIDE 8
MUTE 4 MUTE 6
GATE 4 GATE 6 GATE 8
OVERRIDE 5 OVERRIDE 7
Logic Level Typical Applications
Low (0V) Drives a remote LED.
High (+5 V)
Provides remote indica-
tion of transmitter status
100 mA of
when used with a Room
current
Control System (i.e.,
sinking
Crestron or AMX)
provided.
Activates external equip-
ment (equalizer, signal
processor, loudspeakers,
etc.) when used with a
Room Control System.
Transmitter status control
muting/unmuting of an in-
put channel on automatic
mixer. Used with auto-
matic mixers, such as
Shure Model SCM810
––
Low (0 V) Drives a remote LED to
light when battery is low.
High (+5 V)
Indicates low transmitter
battery status on remote
control panel when used
with a Room Control
System.
LOGIC
GROUND
LOGIC GROUND
MUTE
MUTE 8
FIGURE 28
– 17 –
Connections
Tie the transmitter status
pin to podium mic mute in-
put terminal on the automat-
ic mixer
Tie receiver logic ground to
mixer logic ground.
–– Make all logic ground con-
nections to this pin, includ-
ing the power supply
ground of external logic cir-
cuitry. To avoid switching
noise, do not connect logic
ground to audio, chassis, or
rack grounds.
UC4 LOGIC CONNECTOR
PIN 1: TRANSMITTER STATUS OUT
PIN 2: LOGIC GROUND
PIN 3: TRANSMITTER LOW BATTERY
ENGLISH