Configuration
8-33
9124-A2-GH30-00
June 1999 - Preliminary
Configuring Data Port Physical Options
Select Physical to display or change the physical characteristics of the data port
connected to the DTE (see Table 8-6).
Main Menu
→
Configuration
→
Data Ports
→
Physical
Table 8-6.
Data Port Physical Options (1 of 2)
Transmit Clock Source
Possible Settings: Internal, External
Default Setting: Internal
Determines whether the DTE’s transmitted data is clocked into the FrameSaver unit by
its internal transmit clock or by the external clock provided by the DTE.
NOTE:
Changing settings for this configuration option causes the FrameSaver unit
to abort any physical port tests, including any DTE-initiated loopback tests.
Internal – The FrameSaver unit uses the interchange circuit DB (ITU 114) – Transmit
Signal Element Timing (TXC) (DCE source) for timing the incoming data.
External – The DTE provides the clock for the transmitted data, and the FrameSaver
unit uses the interchange circuit DA (ITU 113) – Transmit Signal Element Timing (XTXC)
(DTE source) for timing the incoming data.
Invert Transmit Clock
Possible Settings: Auto, Enable, Disable
Default Setting: Auto
Determines whether the clock supplied by the FrameSaver unit on interchange circuit
DB (ITU 114) – Transmit Signal Element Timing (DCE Source) TXC is phase inverted
with respect to the clock used to time the incoming Transmitted Data (TD).
Auto – The port will check the clock supplied by the DCE on TXC on this port. If
necessary, the port will automatically phase invert the clock with respect to the
transmitted data.
Enable – Phase inverts the TXC clock. Use this setting when long cable lengths
between the FrameSaver unit and the DTE are causing data errors.
Disable – Does not phase invert the TXC clock.
Port (DTE) Initiated Loopbacks
Possible Settings: Local, Disable
Default Setting: Disable
Allows a local external DTE Loopback to be started or stopped via the port’s attached
data terminal equipment using the port’s interchange lead LL (ITU 141).
Local – The DTE attached to the port controls the local external DTE Loopback.
Disable – The DTE attached to the port cannot control the local external DTE
Loopback.
Содержание FrameSaver SLV 9124
Страница 1: ...FrameSaverr SLV 9124 TECHNICAL REFERENCE Document No 9124 A2 GH30 00 June 1999 PRELIMINARY DRAFT ...
Страница 22: ...About the FrameSaver SLV 1 8 9124 A2 GH30 00 June 1999 Preliminary This page intentionally left blank ...
Страница 200: ...Configuration 8 78 9124 A2 GH30 00 June 1999 Preliminary This page intentionally left blank ...
Страница 286: ...Menu Hierarchy A 4 9124 A2 GH30 00 June 1999 Preliminary This page intentionally left blank ...
Страница 330: ...Cables Connectors and Pin Assignments D 10 9124 A2 GH30 00 June 1999 Preliminary This page intentionally left blank ...
Страница 346: ...Index IN 12 9124 A2 GH30 00 June 1999 This page intentionally left blank ...