Black Box 5000 manual Synchronous Clocking, Configuration Description of Use

Multiserver 5000

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.

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