Clear-Com MS-222 User Manual

INSTALLATION
/ Clear-Com
MS-222
2-Channel Main
Station
6. Announce
Output Connector
The "Announce"
output is a XLR-3M.
The output is transformer
isolated, 600 ohms
output impedance,
and has an
output level of
approximately 0
dBv.
Wiring is
as follows: Pin 1 -- Ground
Pin 2 -- -Audio
Pin 3 - +Audio
7. Announce Relay Contact Terminals
The "Announce"
relay contacts
are available on a screw
terminal block. The
relay
contacts
are "Form
C" (break
before
make). The
contact
description
is as follows:
Left most
---- N/O
--- Normally
Open Contact
Center ----- C --- Wiper
Right most
-- N/C --- Normally Closed Contact
8. Program
Input
Connector
The
"Program"
input is
a XLR-3F.
It is an electronically
balanced
(differential)
input.
Winng is
as follows: Pin 1 -- Ground
Pin 2 - -Audio
Pin 3 - +Audio
9. Program
Gain
Switch
The
"Program
Input Gain
Switch" is
located next
to the "Program
Input"
connector.
In the "Mic"
position
the input
will accept
a 'low' impedance
dynamic microphone
and
produce
a usable level
from a
-65 dBv input
signal for
monitor
and intercom
line feed
uses.
In
the "Line"
position
the input
presents a
balanced
high impedance
and
a -15 dBv
input
signal will produce
a nominal
intercom
level on an
intercom line.
11/90
Rev. 1.0
Page
13

Clear-Com MS-222 Specifications

General

Brand	Clear-Com
Model	MS-222
Category	Intercom System
Language	English