Black Box 5000 - Manual (Page 92)

Multiserver 5000
90
Table 9-5. Synchronous Clocking
Cable Part
Configuration Description of Use Cable Diagrams for Clocks
(1)
Number
Normal Synchronous Use when DTE is Multiserver DTE
or Cascade co-located with
Multiserver. 15
TX Clock 15 EZ422
To DTE TX and RX clocks 17 RX Clock 17 EDN16C
are supplied by
TX Clock Internal the Multiserver.
RX Clock Internal
Normal Synchronous Use when tail-circuit Multiserver DCE
synchronous modem
To DCE or DCE is attached to 15 — not used EZ423
Multiserver. DCE 17 — not used EZ424
TX Clock External supplies both clocks. 18 RX Clock 15
RX Clock External 24 TX Clock 17
Normal Synchronous Use when attached Multiserver DCE/DTE
device is providing the
To DCE or DTE TX clock and the 15 (2), (3) Depends
Multiserver is providing 17 RX Clock (2), (3) upon
TX Clock External the RX clock. 24 TX Clock (2) application.
RX Clock Internal
Special Synchronous Use when attached Multiserver DCE/DTE
device is providing the
To DCE or DTE clock for RX data and 15 TX Clock (2) Depends
the Multiserver is 17 (2), (3) upon
TX Clock Internal providing the TX clock. 18 RX Clock (2) application.
RX Clock External
(1) TX clock and RX clock are used to indicate on which line the Multiserver supplies or accepts the transmit and
receive clock signals. The TX and RX clocks are always named respective to the Multiserver port.
(2) Pin assignments depend on attached device.
(3) Multiserver will output the clock.
(4) Specifications of crossover cable depend upon attached device.