beautypg.com

Aiphone AN-8031MS User Manual

Page 3

Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

background image

3.3. Connection to External Switch

3.4. The Type of Cables

External switches such as footswitches can be connected

to the AN-8031 MS's external dial input terminals.
Terning on each switch connected to the terminal [7], [8],
[9], or [C] permits the same operation as performed by
pressing the dial [7], [8], [9], or [C],

Note

The cable length from the external switch should not
exceed 3 m.

[Connections]

The types of cables are to be determined according to the
following conditions.

• Twisted pair wires (such as those used for electronic

push-button telephone) are to be used for wiring between
the Exchange and the stations in principle.

® The number of cables pairs laid should be determined

considering the possibility of future expansion of the
system.

® Outdoor wires should be used where wiring passes

through inaccessible areas such as ceilings or under
floors where the maintenance is not performed. Indoor
wires may also be used, however, in case where there is

no risk of deterioration due to exposure to heat, etc.

Note
Specifications related to each junction are as follows.

Mini-clamp connector (AN-8000EX line terminal)

Conductor diameter:

0 0.4 - 0.65 mm (AWG22 - 26),

Solid wire

Outside diameter:

0 1.05 mm or below

Clip terminal (E-7000TB)

Conductor diameter:

0 0.4 - 0.8 mm (AWG20 - 26),

Solid wire

Outside diameter:

0 1.5 mm or below

Removable terminal plug (AN-8031 MS line terminal)

Conductor diameter:

0 0.4 - 1.6 mm (AWG14 - 26),

Solid wire/Stranded wire

External dial input terminal (AN-8031 MS)

Conductor diameter:

0 0.8 - 1.3 mm (AWG16 - 20),

Solid wire/Stranded wire

3.5. Relations Between Core Diameter of Cable

and Maximum Cable Length

Refer to the following chart as guidelines when designing

the distance between the Exchange and stations so that

loop resistance value becomes 170 O or less.

Conductor

Loop

Maximum cable length

diameter

resistance

between the Exchange and station.

(mm)

(0/km)

(Assuming that the loop resistance is 170 Q)

0O.4

295

570 m

0O.5

187

900 m

00.65

113

1.5 km

0O.9

58

2.9 km