Toa VS-900DI, Инструкция по эксплуатации

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5.4.4. Connection to the MS-900 Master Station
• Connect the VS-900DI to the MS-900 using 2 twisted pair cables as shown below referring to the following
procedures.
1. Fit a 6-position 4-contact modular jack (prepare locally) to each cable end.
2. Connect one modular jack to the VS-900DI's CN7 modular jack using the modular cord (prepare locally),
and another jack to the MS-900 modular jack using a modular cable (supplied with the MS-900).
• When using the Master Station, the maximum cable distance is the total connected distance from the
exchange to the Master Station via the VS-900DI.
2 twisted pair cables
2 twisted pair cables
To VS-900MS (VS-900 exchange)
LINE
1234
1234 1234
VS-900DI
CN6
To VS-900
CN7
To MS-900
Master
station
MS-900
Ferrite clamp*
SFC-8
Modular cord
(prepare locally)
6-position 4-contact
Modular jack
(prepare locally)
Modular cord
(supplied with the MS-900)
* See "Mounting the ferrite clamp" below.
5.4.5. Mounting the ferrite clamp
Mount the ferrite clamp (supplied with the VS-900DI card) on
the cable in a way that the cable is looped one turn as
illustrated. (This countermeasure is for complying with the CE
marking and FCC requirements.)
VS-900DI card
Ferrite clamp
SFC-8
Cable type AWG24 (0.52 mm) AWG22 (0.65 mm) AWG20 (0.82 mm)
Distance 0.9 km 1.5 km 2.3 km