Telex audiocom IC-1 REV J, IC-1F REV J User Manual

IC-I

AND

IC-I

F

GENERAL DESCRIPTION

The IC-1 and IC-1 F are single-channel, single-
line intercom stations designed for use with
dynamic headsets.

The IC-1 is a compact, lightweight unit which
may be worn on the user's belt, or mounted
permanently to other equipment. Parallel-wired
male and female XLR-3 connectors, mounted on
the rear panel, allow units to be daisy-chained
using prefabricated intercom cables.

F

The IC-1
designed for permanent installation in an
electrical pull box. The unit is connected to the
intercom system by means of combination wire-
wrap, screw clamp terminals.

Both the IC-1 and IC-1 F are available with and
without light signalling capability. The light
signal versions are distinguished by the presence
of a Call Indicator Light on the front panel. For
purposes of documentation, the light signal
versions will be designated the IC-1/LS (an IC-1
with light signalling, and the IC-1 F/LS (an IC-1 F
with light signalling).

Specifications apply to all versions unless
otherwise noted.

Frequency Response:

Transmit: 150-7,000
Receive: 180-6,000

is a flush-mount version of the IC-1

SPECIFICATIONS

Hz

t1, -3 dB.

Hz

+1,

-3

dB.

Output Impedance:

Phones: 60 ohms (Unit is designed for
use with 150-600 ohm phones.)

Output Power:

Phones: 75 milliwatts into 150 ohms.
Line: 10 milliwatts (+I0 dBM).

Total Harmonic Distortion:

Transmit: 1% at 10 dBM.
Receive: 1% at 75 milliwatts.

Common Mode Rejection:

Line: 40 dB at 60

Power Requirements:

Voltage: 24 Vdc nominal. Unit will
operate on 12-30 Vdc.
Current: No signal
12 milliamps (IC-1/LS, IC-1 F/LS).
Average talk
20 milliamps (IC-1/LS, IC-1 F/LS).
Signalling

Dimensions (without external connectors):

IC-1, IC-I/LS: 1.75 inches (44.45 mm) high

3.0 inches (76.2 mm) wide x 5.39 inches
(136.9 mm) long.
IC-IF, IC-1F/LS: 4.5 inches (114.3 mm) high x

4.62 inches (117.35 mm) wide x 2.5 inches
(63.5 mm) deep behind front panel. If unit is

installed using screw-clamp terminals, wire-
wrap pins may be cut off and depth reduces to

2.15 inches (54.61 mm).

-

Hz.

-

8

milliamps (IC-1, IC-IF),

-

12 milliamps (IC-1, IC-IF),

30 milliamps (IC-I/LS, IC-1 F/LS).

x

Equivalent lnput Noise:

Mic Input: 2 microvolts (-1 16 dBV)
150-7,000

Input Level:

Mic: 5 millivolts nominal, 12 millivolts

maximum.

Line: 1 volt (0 dBM) nominal, 4 volts (12 dBM)

maximum.

lnput Impedance:

Mic: Greater than 5,000 ohms. (Unit is

designed for use with 50-600 ohm phones).

Line: Greater than 10,000 ohms.

HZ.

Weight:

IC-1, IC-1/LS: 1.5 Ibs (0.51 kg)

Connectors:

IC-1/LS: One XLR-4M for headset
connection. One XLR-3M and one XLR-3F,
wired in parallel, for intercom line
connection.
IC-1 F, IC-1 F/LS: One XLR-4M for headset
connection. Three combination screw-clamp,
wire-wrap terminals for intercom line
connection. Screw-clamp terminals accept
No. 22 through No. 14 AWG stranded or solid
wire.

INSTALLATION

IC-1 and IC-11LS

Permanent installation may be accomplished by
removing the belt clip and utilizing the threaded
belt clip mounting holes along with the additional
threaded hole in the case to secure the unit to
other equipment. These holes accept No. 6-32
machine screws. Screws may extend

3/16-inch
into unit. These units may also be rack mounted
using an RM-13 Rack Mounting Kit.

IC-1 F and IC-1 FILS

After running wires to the electrical box where
the unit will be located, refer to the label on the
rear cover of the unit and make connections as
indicated. It is not necessary to observe polarity
when connecting intercom line wires. Connect
the power supply dc return wire to the SHLD
terminal. If another set of wires is to be run from
this unit to another intercom station, connect
these wires at this time.

HEADPHONE VOLUME

CONTROL

MICROPHONE ON/OFF

IC-1 FRONT PANEL

HEADPHONE VOLUME

CONTROL

OPERATION

Headset Jack:

Accepts headsets with dynamic

microphone and dynamic headphone(s).

Headphone VOLUME Control:

Adjusts

headphone listen level. Does not affect mic level.

MICION Switch (IC-1, IC-IF):

In the MIC
position, the microphone is shut off but the
intercom line is still monitored by the phones. In

the ON position, the microphone is operational
for two-way communication.

OFFIMICICALL Switch (IC-IILS, IC-1 FILS):

the

OFF

position, the microphone is shut off but

In

the intercom line is still monitored by the phones.

In the MIC position, the microphone is
operational for two-way communication. In the
CALL position, with the switch held continuously,
an inaudible signal is sent to all other stations on

the line: on those stations with light signalling,
the Call Indicator lights will illuminate. When

another station responds verbally, release the
switch and it will automatically return to the MIC
position for two-way communication.

Call Indicator LED (IC-1/LS, IC-1FILS):

Illuminates when station is being called. Does not
illuminate when sending a call signal.

CALL INDICATOR LIGHT

IC-1ILS FRONT PANEL

INTERCOM LINE CONNECTORS

REAR PANEL

J

IC-1 Reference Guide

MICROPHONE

ON/OFF SWITCH

HEADPHONE VOLUME CONTROL

CONTROL

HEADSET CONNECTOR

MIC ON/OFFAND
CALL SWITCH

IC-IF FRONT PANEL

IC-1FILS FRONT PANEL

-.---

IC-IF Reference Guide

MAINTENANCE

IC-1, IC-IILS Mechanical Exploded

2-4

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