Telex IC-1 Manual

I C - 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.
The IC-1 F is a flush-mount version of 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
Specifications apply to all versions unless
otherwise noted.
Frequency Response:
Transmit: 150-7,000 Hz t 1 , -3 dB.
Receive: 180-6,000 Hz
+1, -3 dB.
Equivalent lnput Noise:
Mic Input: 2 microvolts (-1 16 dBV)
150-7,000 HZ.
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.
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 Hz.
Power Requirements:
Voltage: 24 Vdc nominal. Unit will
operate on 12-30 Vdc.
Current: No signal
-
8 milliamps (IC-1, IC-IF),
12 milliamps (IC-1/LS, IC-1 F/LS).
Average talk
-
12 milliamps (IC-1, IC-IF),
20 milliamps (IC-1/LS, IC-1 F/LS).
Signalling
-
30 milliamps (IC-I/LS, IC-1 F/LS).
Dimensions (without external connectors):
IC-1, IC-I/LS: 1.75 inches (44.45 mm) high x
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 t o
2.15 inches (54.61 mm).
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.