Toa VS-900DI, Инструкция по эксплуатации

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12
5.4.3. Connection to the exchange
• Connect the VS-900DI to the VS-900MS using 2 twisted pair cables as shown below referring to the
following procedures.
1. Fit the 4P connector (supplied with the VS-900MS) to one cable end, and a 6-position 4-contact modular
jack (prepare locally) to the other cable end.
2. Connect the modular jack to the VS-900DI's CN6 modular jack using the modular cord (supplied with the
VS-900DI).
• The table below shows the maximum cable distance.
Cable type AWG24 (0.52 mm) AWG22 (0.65 mm) AWG20 (0.82 mm)
Distance 0.9 km 1.5 km 2.3 km
2 twisted pair cables
2 twisted pair cables
4P connector
(supplied with
the VS-900MS)
LINE
1234
1234 1234
1
2
3
4
1
2
3
4
VS-900MS
VS-900 exchange
CN1
CN2
CN3
CN4
Line 1
for master station
Line 2
for master station
Master
station
Front view of
the circuit board
VS-900DI
CN6
To VS-900
CN7
To MS-900
Ferrite clamp
SFC-10
Ferrite clamp*
SFC-8
Modular cord
(supplied with the VS-900DI)
6-position 4-contact
Modular jack
(prepare locally)
* See p.13 "Mounting the ferrite clamp."