Harris Legacy 99-1300-0, Operation & Technical Manual

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2 Installation
Revision B • 1/03
H A R R I S C O R P O R A T I O N
2-41
FUNCTIONAL DESCRIPTION OF CONNECTION
Normally Open (N/O) and Common (C) contact outputs. A contact closure is maintained while the studio/voice
booth has a live mic (as determined by the settings of input modules DIP switches DS1/DS3-3, Studio Mute).
Conn5 to +40 VDC to this input enables the active low control inputs, Mute and Dim. If the control logic
comes from an isolated device (e.g., a remote control panel), the +VDC can come from Logic 5VDC.
When this pin is pulled low, the Studio monitor speakers are muted and the Studio Warning relay is activated.
When this pin is pulled low, the Studio monitor speakers are dimmed by 12 dB
Normally Open (N/O) contact output. A contact closure is generated while the Studio or Host is receiving
talkback. The Common (C) relay contact is the Mute, Dim & T/B Tally Common output.
Normally Open (N/O) contact output. A contact closure is generated any time the studio monitor speakers are
muted. The Common (C) relay contact is the Mute, Dim & T/B Tally Common output.
Normally Open (N/O) contact output. A contact closure is generated any time the studio monitor speakers are
being dimmed. The Common (C) relay contact is the Mute, Dim & T/B Tally Common output.
The Common (C) contact output for the Mute, Dim, and Talkback tallies. Tie this pin to + voltage when the tallies
are tied together to ground. Tie this pin to ground if the tallies are commoned together to a voltage source.
When the tallies are on an isolated panel, this pin can jumper to Logic 5VDC or to Logic Ground.
Logic voltage outputs that can deliver up to 300 mA of current to isolated control panels. All pins are simply
paralleled for convenience.
Module logic ground. Should be connected to isolated control panels only.
PIN NAME/NUMBER
WARNING RELAY
(pins 4 and 5)
ACTIVATE LOGIC INPUTS (+)
(pin 14)
MUTE INPUT (-)
(pin 8)
DIM INPUT (-)
(pin 9)
TALKBACK TALLY
(pin 13)
MUTE TALLY
(pin 11)
DIM TALLY
(pin 12)
MUTE, DIM, & T/B TALLY
COMMON (pin 10)
LOGIC 5VDC
(pins 6 and 7)
LOGIC GROUND
(pins 1, 2, 3)
Studio Module, Logic — Signal Definitions