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GENERAL
The IC-S is a single-channel speaker station
designed for use with an external microphone.
There are four versions of the IC-S; all identified
by the same model name, but distinguished from
one another by certain features. For purposes of
documentation, the four versions will be
designated according to features as follows:
IC-SF: Wall-mounted station without light
1.
signal (no indicator light on front panel).
DESCRIPTION
output Impedance:
Phones: 60 ohms (Designed for use with
150-600 ohm phones.)
Output Power:
Phones: 75 milliwatts into 150 ohms.
Speaker: 2 watts into 8 ohms.
Line: 10 milliwatts ($10 dBM).
Speaker Acoustic Output:
100 dB SPL at 1 meter on axis at full power.
IC-S: An IC-SF mounted in a carrying case
2.
with rear panel audio connectors.
IC-SF/LS: Wall-mounted station with light
3.
signal (has indicator light on front panel).
IC-S/LS: An IC-SF/LS mounted in a
4.
carrying case with rear panel audio
connectors.
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SPECIFICATIONS
Frequency Response:
Transmit: 150-7,000
Receive: 180-6,000
200-5,000 Hz usable for speaker.
Equivalent lnput Noise:
Mic Input: 2 microvolts (-1 16 dBV)
150-7.000
HZ.
Hz +1, -3 dB.
Hz +1, -3 dB for phones.
Total Harmonic Distortion:
Mic to line: 1% at 10 milliwatts.
Line to phones: 1% at 75 milliwatts.
Common Mode Rejection:
Line: 40 dB at 60 Hz.
Voltage Gain:
Mic to line: 200 (46 dB).
Line to phones: 24 (28 dB) adjustable to zero.
Speaker Attenuation:
With mic only connected: 0 dB.
With headset connected (mic
With -10 switch: 10 d~ (non-LS units only).
With headset and -10 switch: 16 dB (non-LS
units only).
Power Requirements:
Voltage: 24 Vdc nominal. Will operate on
12-30 Vdc.
Current: No signal
Average talk
Signalling (LS units only)
- 25 milliarnps.
-
60 milliamps.
+
phones): 6 dB.
- 60 milliamps.
lnput Level:
Mic: 5 millivolts nominal, 12 millivolts
maximum.
Line: 1 volt (0 dBM) nominal, 4 volts (12 dBM)
maximum.
Input Impedance:
Mic: Greater than 5,000 ohms. (Designed for
use with 50-600 ohm microphones).
Line: Greater than 10,000 ohms. Transformer
coupled.
/'
.
Dimensions (connectors not included):
IC-S, IC-S/LS: 10.25 inches (260.35 mm) wide
x 7.7 inches (195.6 mm) high x 3.75 inches
(95.25 mm) deep.
IC-SF, IC-SF/LS: 9 inches (228.6 mm) wide x
7 inches (177.8 mm) high
(69.85 mm) deep behind front panel. If unit is
installed using screw-clamp terminals, wire
wrap pin may be cut off; depth reduces to
2.38 inches (60.45 mm).
x
2.75 inches
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Connectors:
IC-S, IC-SILS: Miclheadset - one XLR-4M.
-
one XLR-3M and one XLR-3F wired in
Line
parallel.
IC-SF, IC-SFILS: Miclheadset
-
three combination screw-clamp, wire-
Line
wrap terminals (screw-clamps will accept No.
22
-
No.
14
AWG stranded or solid wire).
External power -three combination screw-
clamp, wire-wrap terminals (use optional).
-
one XLR-4M.
3.
Remove the jumper between the +24 and
terminals.
4.
Connect the
+24 terminal.
5.
Connect the
COM terminal.
When all connections are completed, mount unit
in electrical box using the four screws supplied.
"+"
lead of the supply to the
"-"
lead of the supply to the
PH
INSTALLATION
IC-S and IC-SILS
These stations may be connected to the intercom
line using prefabricated cables with XLR-3 end
connectors, or cables may be made to lengths as
required and terminated with XLR-3 cable
connectors.
IC-SF and IC-SFILS
When powering from the intercom line:
Refer to the label on the rear cover
1.
Connect the two intercom line wires to the
2.
LlNE terminals.
3. Connect the dc return wire to the SHLD
terminal.
Connect a jumper between the 4-24 and
4.
terminals (disregard this step with factory-
-
fresh units
place).
When powering from
Refer to the label on the rear cover.
1.
Connect the two intercom line wires to the
2.
LlNE terminals.
jumper should already be in
a
separate dc supply:
PH
OPERATION
SpeakerlHeadphone VOLUME Control:
listen level only. Does not affect mic level.
SPEAKER Switch (IC-S, IC-SF):
position switch. In the ON position, the speaker
has normal volume output. In the
speaker output is reduced. In the OFF position,
there is no speaker output. The
positions do not affect the headphone or
microphone levels.
SPEAKER ONIOFF and CALL Switch (IC-SILS,
IC-SFILS):
ON and OFF positions turn the speaker on and
off but do not affect the headphone output or
microphone level when using a headset. The
CALL position is used for light signalling. 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 ON
position for two-way voice communication.
MicIHeadset Connector:
microphone or a headset with dynamic
microphone and headphones.
Call Indicator Light (IC-SILS, IC-SFILS):
Provides a visual indication when the station is
being called.
This is a three-position switch. The
Accepts a push-to-talk
This is a three-
-10
-
10
Adjusts
dB position,
dB and OFF
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11
SPEAKER SWITCH
SPEAKER/HEADPHONE
VOLUME CONTROL
1
MICROPHONEIHEADSET
CONNECTOR
I
SPEAKER ON/OFF
AND CALL SWITCH
SPEAKER/HEADPHONE
VOLUME CONTROL
r'
I
4CALL INDICATOR LIGHT
[----I
MICROPHONE/ HEADSET
CONNECTOR
IC-S, IC-SF FRONT PANEL
IC-SILS, IC-SFILS FRONT PANEL
IC-S, IC-SILS REAR PANEL
IC-S Reference Guide