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International Communications Group, Inc.
User’s Guide and Installation Manual
Sigma
7
Aviation Telephone Handset
Sigma
7
31
April 2006
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
SYSTEM SPECIFICATIONS
1. Purpose
This section presents the specifications for Sigma
7
handset.
2. Product Definition
The Sigma
7
handset offers special features, yet with the convenience and simplicity of a
conventional telephone. This aeronautically approved handset is versatile and easy to use. It is
designed for a recessed drink rail or bulkhead. ICG also offers a data jack (RJ-11) option located in
the cradle. This data jack obviates the requirement to remove the handset to plug in a PC, and the
completion center is not required to provide a separate jack. The data jack can be either paralleled
with the telephone circuit or it can be connected to a separate circuit so that both telephone and
data calls can be active at any time. The Sigma
7
has an internal magnetic stripe reader to support
credit card calls and a special-function key to provide enhanced features such as flash transfer and
access to programming menus.
3. Specifications
DIMENSIONS:
Height (Overall)
=
3.600 in. (91.44 mm)
Length
=
12.00 in. (304.8 mm)
Width
=
2.900 in. (73.66 mm)
Height (Exposed)
=
0.675 in. (17.15 mm)
WEIGHT:
=
0.92 lbs. (420 grams)
(A) 2-Wire Models
Connections
RJ-11
Current on Telephone Line
30 mA (Not to Exceed)
Ring signal Required
20 Hz 60 VRMS Minimum
Polarity (Tip and Ring)
Polarity Insensitive
(B) 4-Wire Models
TX pair
600
Ω
RX pair
600
Ω
Ring Signal
Detect ground
Hook Switch, on hook 1.2 M
Ω
Hook Switch, off hook less than 10
Ω
DTMF Tone Duration
80 msec
AC Impedance
600
Ω
DTMS Dialer Level
–3 into 600
Ω
Band Pass
200–3300 Hz
Содержание Sigma7
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