Fibersystem 21-1601, Техническое руководство

Страница: 17 / 28

17
Configuration
Factory settings
The most common configuration is set at delivery.
S1 –
Signal ground and Chassie ground are connected. Chassie is
connected to Protective Earth(PE)/Ground with the Power
supply cord.
S5 – Codir/Contra
S6 – Codir
S11 – 64kbps , (Position 9).
S2, S3, S4, 15, S16 – DTE, (Only X.21).
S13 –
No synchronization of received fiber clock.
S14 – External clock, (Received from electrical interface).
S14 – Phase not used, (No strap).
S6 – Codir
S7, S8, S9 - Contra clock
Î
Receive clock.
When two 21-16xx are connected back-to-back, one of the 21-16xx should be set to
“Master mode”.
Configuration – remove top lid.
For configuration the 21-16xx must be open by removing the top lid.
Remove power supply cord and turn the unit up-side down.