Configuring NETREF (NETREF1) and NETREF2

If you specified that any board use NETREF (NETREF1) or NETREF2 as a timing reference, you must configure one or two other boards to drive the signals. Configure a different board for each signal. The source for each signal can be a digital trunk.

Note: NETREF2 is available only in H.110 configurations.

Use the following keywords to configure a board to drive NETREF (NETREF1):

Keyword

Description

Clocking.HBus.NetRefSource

Specifies the source of the NETREF (NETREF1) timing reference. Set to any of the following:

  • NETWORK to drive NETREF based on the signal from a digital trunk connected to the board.

  • STANDALONE if the board will not drive NETREF.

  • OSC to drive NETREF using the board's oscillator for debugging purposes only.

Clocking.HBus.NetRefSourceNetwork

If Clocking.HBus.NetRefSource is set to NETWORK, specifies the number of the trunk from which to get the signal.

Clocking.HBus.NetRefSpeed

Sets the speed of the NETREF signal. Set to 8K.


Use the following keywords to configure a board to drive NETREF2:

Keyword

Description

Clocking.HBus.NetRef2Source

Specifies the source of the NETREF2 timing reference. Set to any of the following:

  • OSC to drive NETREF2 using the board's oscillator.

  • NETWORK to drive NETREF2 based on the signal from a digital trunk connected to the board.

  • STANDALONE if the board will not drive NETREF2.

Clocking.HBus.NetRef2SourceNetwork

If Clocking.HBus.NetRefSource is set to NETWORK, specifies the number of the trunk from which to get the signal.

Clocking.HBus.NetRef2Speed

Sets the speed of the NETREF signal. Set to 8K.


Note: Not all boards can drive NETREF or NETREF2. Refer to the board documentation for more information.